Merge pull request #1806 from ramox81/codex/block-attribute-manager-window

Block Attribute Manager window (BATTMAN / ATTMAN)

locales/ar-SA/opencadstudio.ftl

@@ -6626,3 +6626,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/bg-BG/opencadstudio.ftl

@@ -6614,3 +6614,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/cs-CZ/opencadstudio.ftl

@@ -6611,3 +6611,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/de-DE/opencadstudio.ftl

@@ -6612,3 +6612,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/el-GR/opencadstudio.ftl

@@ -6614,3 +6614,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/en-US/opencadstudio.ftl

@@ -6613,3 +6613,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/es-ES/opencadstudio.ftl

@@ -6614,3 +6614,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/fi-FI/opencadstudio.ftl

@@ -6611,3 +6611,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/fr-FR/opencadstudio.ftl

@@ -6614,3 +6614,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/hi-IN/opencadstudio.ftl

@@ -6602,3 +6602,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/hu-HU/opencadstudio.ftl

@@ -6598,3 +6598,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/it-IT/opencadstudio.ftl

@@ -6613,3 +6613,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/ja-JP/opencadstudio.ftl

@@ -6602,3 +6602,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/ko-KR/opencadstudio.ftl

@@ -6613,3 +6613,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/lo-LA/opencadstudio.ftl

@@ -6614,3 +6614,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/nl-NL/opencadstudio.ftl

@@ -6612,3 +6612,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/pl-PL/opencadstudio.ftl

@@ -6613,3 +6613,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/pt-BR/opencadstudio.ftl

@@ -6614,3 +6614,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/ru-RU/opencadstudio.ftl

@@ -6615,3 +6615,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/tr-TR/opencadstudio.ftl

@@ -6535,3 +6535,16 @@ block-def-dialog =
     .remembered = Ekranda belirt, nesne seçeneği, dağıtmaya izin ve bu anahtar sonraki açılışta hatırlanır.
     .no-objects = Blok için nesne seçilmedi.
     .create-empty = Boş blok oluştur
+attman =
+    .title = Öznitelik Yöneticisi
+    .modes = Kipler
+    .references = __ocs_fmt_0__ referans
+    .counts = Çizimde __ocs_fmt_0__ · model alanında __ocs_fmt_1__
+    .columns = Sütunlar:
+    .constant-note = Sabit kipi tanımda değiştirilemez.
+    .live = Değişiklikleri çizimde canlı göster
+    .apply-existing = Mevcut referanslara uygula
+    .emphasize = Yinelenen etiketleri vurgula
+    .sync = Eşitle
+    .help = BATTMAN bir bloğun öznitelik tanımlarını yönetir.
+    .no-attributed-block = Blok tablosunda __ocs_fmt_0__ adlı öznitelikli blok yok.

locales/zh-CN/opencadstudio.ftl

@@ -6597,3 +6597,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

locales/zh-TW/opencadstudio.ftl

@@ -6609,3 +6609,16 @@ block-def-dialog =
     .remembered = Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time.
     .no-objects = No objects are selected for the block.
     .create-empty = Create empty block
+attman =
+    .title = Block Attribute Manager
+    .modes = Modes
+    .references = __ocs_fmt_0__ references
+    .counts = In drawing: __ocs_fmt_0__ · in model space: __ocs_fmt_1__
+    .columns = Columns:
+    .constant-note = The Constant mode cannot be changed in the definition.
+    .live = Show changes in the drawing as they are made
+    .apply-existing = Apply changes to existing references
+    .emphasize = Emphasize duplicate tags
+    .sync = Sync
+    .help = BATTMAN manages the attribute definitions of a block.
+    .no-attributed-block = Block table contains no attributed block named __ocs_fmt_0__.

src/app/commands/attman.rs

@@ -0,0 +1,565 @@
+//! Block Attribute Manager (BATTMAN / ATTMAN): loading an attributed block's
+//! definitions into the dialog and writing the edited list back to the
+//! block definition and, when asked, to its existing references.
+
+use codec::entities::AttributeDefinition;
+use codec::{EntityType, Handle};
+use iced::Task;
+
+use crate::app::{Message, OpenCADStudio};
+use crate::modules::insert::block_cmdline::BlockTable;
+use crate::scene::view::dispatch::{apply_common_prop, apply_geom_prop};
+use crate::ui::window::attman_dialog::{
+    self as dialog, AttManBlock, AttManMsg, AttManRow, AttManState, EditTab,
+};
+
+impl OpenCADStudio {
+    /// Open the dialog on the block of the first preselected attributed
+    /// reference, else on the first attributed block.
+    pub(in crate::app) fn open_attman(&mut self, i: usize, preselected: &[Handle]) -> Task<Message> {
+        let document = &self.tabs[i].scene.document;
+        let table = BlockTable::of(document);
+        let model = document
+            .block_records
+            .get("*Model_Space")
+            .map_or(Handle::NULL, |br| br.handle);
+        let blocks: Vec<AttManBlock> = table
+            .attributed
+            .iter()
+            .map(|name| {
+                let mut found = 0;
+                let mut in_space = 0;
+                for entity in document.entities() {
+                    if let EntityType::Insert(insert) = entity {
+                        if insert.block_name.eq_ignore_ascii_case(name) {
+                            found += 1;
+                            if insert.common.owner_handle == model {
+                                in_space += 1;
+                            }
+                        }
+                    }
+                }
+                AttManBlock {
+                    name: name.clone(),
+                    found,
+                    in_space,
+                }
+            })
+            .collect();
+        let start = preselected
+            .iter()
+            .find_map(|h| match document.get_entity(*h) {
+                Some(EntityType::Insert(insert)) => blocks
+                    .iter()
+                    .position(|b| b.name.eq_ignore_ascii_case(&insert.block_name)),
+                _ => None,
+            })
+            .unwrap_or(0);
+        let mut styles: Vec<String> = document
+            .text_styles
+            .iter()
+            .filter(|s| !s.name.is_empty())
+            .map(|s| s.name.clone())
+            .collect();
+        styles.sort_by_key(|s| s.to_lowercase());
+        let layers: Vec<String> = document.layers.iter().map(|l| l.name.clone()).collect();
+        let linetypes: Vec<String> = document
+            .line_types
+            .iter()
+            .map(|lt| lt.name.clone())
+            .filter(|n| !n.eq_ignore_ascii_case("ByLayer") && !n.eq_ignore_ascii_case("ByBlock"))
+            .collect();
+        self.attman = Some(AttManState {
+            blocks,
+            block: start,
+            rows: Vec::new(),
+            removed: Vec::new(),
+            selected: None,
+            tab: EditTab::Attribute,
+            edit_open: true,
+            drafts: Default::default(),
+            dirty: false,
+            live_steps: 0,
+            more_columns: false,
+            styles,
+            layers,
+            linetypes,
+            error: None,
+        });
+        self.attman_load(i);
+        self.tabs[i].active_cmd = None;
+        self.active_modal = Some(crate::app::ModalKind::AttMan);
+        Task::none()
+    }
+
+    /// Read the shown block's attribute definitions, in block order.
+    fn attman_load(&mut self, i: usize) {
+        let document = &self.tabs[i].scene.document;
+        let Some(state) = self.attman.as_mut() else {
+            return;
+        };
+        let Some(name) = state.current_block().map(|b| b.name.clone()) else {
+            return;
+        };
+        state.rows = document
+            .block_records
+            .get(&name)
+            .map(|br| {
+                br.entity_handles
+                    .iter()
+                    .filter_map(|h| match document.get_entity(*h) {
+                        Some(EntityType::AttributeDefinition(def)) => Some(AttManRow {
+                            handle: *h,
+                            original_tag: def.tag.clone(),
+                            live_tag: def.tag.clone(),
+                            def: def.clone(),
+                        }),
+                        _ => None,
+                    })
+                    .collect()
+            })
+            .unwrap_or_default();
+        state.removed.clear();
+        state.dirty = false;
+        state.selected = (!state.rows.is_empty()).then_some(0);
+        state.load_drafts();
+    }
+
+    pub(in crate::app) fn on_attman(&mut self, m: AttManMsg) -> Task<Message> {
+        let i = self.active_tab;
+        let Some(state) = self.attman.as_mut() else {
+            return Task::none();
+        };
+        // Edits of the selected row.
+        let mut edited = true;
+        let at = state.selected;
+        match m {
+            AttManMsg::Block(index) => {
+                if index == state.block || index >= state.blocks.len() {
+                    return Task::none();
+                }
+                // Pending changes of the shown block are kept.
+                if state.dirty && !self.attman_commit(i, true, false) {
+                    return Task::none();
+                }
+                if let Some(state) = self.attman.as_mut() {
+                    state.block = index;
+                }
+                self.attman_load(i);
+                return Task::none();
+            }
+            AttManMsg::PickBlock => {
+                self.active_modal = None;
+                let command = crate::modules::insert::attman::AttmanPickCommand;
+                use crate::command::CadCommand as _;
+                self.command_line.push_info(&command.prompt());
+                self.tabs[i].active_cmd = Some(Box::new(command));
+                return Task::none();
+            }
+            AttManMsg::Select(index) => {
+                if index < state.rows.len() {
+                    state.selected = Some(index);
+                    state.load_drafts();
+                }
+                return Task::none();
+            }
+            AttManMsg::MoveUp | AttManMsg::MoveDown => {
+                let Some(at) = at else {
+                    return Task::none();
+                };
+                let to = if matches!(m, AttManMsg::MoveUp) {
+                    at.checked_sub(1)
+                } else {
+                    Some(at + 1).filter(|t| *t < state.rows.len())
+                };
+                let Some(to) = to else {
+                    return Task::none();
+                };
+                state.rows.swap(at, to);
+                state.selected = Some(to);
+            }
+            AttManMsg::Remove => {
+                let Some(at) = at else {
+                    return Task::none();
+                };
+                if state.rows.len() < 2 {
+                    return Task::none();
+                }
+                let row = state.rows.remove(at);
+                state.removed.push(row.handle);
+                state.selected = Some(at.min(state.rows.len() - 1));
+                state.load_drafts();
+            }
+            AttManMsg::ToggleEdit => {
+                state.edit_open = !state.edit_open;
+                return Task::none();
+            }
+            AttManMsg::Tab(tab) => {
+                state.tab = tab;
+                return Task::none();
+            }
+            AttManMsg::MoreColumns => {
+                state.more_columns = !state.more_columns;
+                return Task::none();
+            }
+            AttManMsg::Column(column, on) => {
+                let bit = 1u32 << (column as u32);
+                let mut prefs = dialog::prefs();
+                prefs.columns = if on {
+                    prefs.columns | bit
+                } else {
+                    prefs.columns & !bit
+                };
+                return Task::none();
+            }
+            AttManMsg::ApplyExisting(on) => {
+                dialog::prefs().apply_existing = on;
+                return Task::none();
+            }
+            AttManMsg::Emphasize(on) => {
+                dialog::prefs().emphasize_duplicates = on;
+                return Task::none();
+            }
+            AttManMsg::Live(on) => {
+                dialog::prefs().live = on;
+                if on && state.dirty {
+                    self.attman_commit(i, false, false);
+                }
+                return Task::none();
+            }
+            AttManMsg::DismissError => {
+                state.error = None;
+                return Task::none();
+            }
+            AttManMsg::Help => {
+                self.command_line.push_info(
+                    crate::t!("BATTMAN manages the attribute definitions of a block.").as_ref(),
+                );
+                return Task::none();
+            }
+            AttManMsg::Sync => {
+                self.attman_commit(i, true, true);
+                return Task::none();
+            }
+            AttManMsg::Apply => {
+                self.attman_commit(i, true, false);
+                return Task::none();
+            }
+            AttManMsg::Ok => {
+                if self.attman_commit(i, true, false) {
+                    self.attman = None;
+                    self.close_active_modal();
+                }
+                return Task::none();
+            }
+            AttManMsg::Cancel => {
+                self.attman_withdraw_live();
+                self.attman = None;
+                self.close_active_modal();
+                return Task::none();
+            }
+            _ => {
+                edited = false;
+            }
+        }
+        if edited {
+            state.dirty = true;
+            return self.attman_after_edit(i);
+        }
+        // Field edits of the selected row.
+        let Some(row) = at.and_then(|at| state.rows.get_mut(at)) else {
+            return Task::none();
+        };
+        let def = &mut row.def;
+        let yes = |on: bool| if on { "Yes" } else { "No" };
+        match m {
+            AttManMsg::Tag(value) => {
+                state.drafts.tag = value.clone();
+                if crate::ui::window::attdef_dialog::tag_error(&value).is_none() {
+                    geom(def, "att_tag", &value);
+                }
+            }
+            AttManMsg::Prompt(value) => geom(def, "att_prompt", &value),
+            AttManMsg::Default(value) => geom(def, "att_default", &value),
+            AttManMsg::Mode(key, on) => {
+                let field = match key {
+                    "invisible" => "att_invisible",
+                    "verify" => "att_verify",
+                    "preset" => "att_preset",
+                    "multiline" => "att_multiline",
+                    _ => return Task::none(),
+                };
+                geom(def, field, yes(on));
+            }
+            AttManMsg::Style(value) => geom(def, "att_style", &value),
+            AttManMsg::Justify(justify) => geom(def, "att_justify", justify.label()),
+            AttManMsg::Height(value) => {
+                state.drafts.height = value.clone();
+                geom(def, "att_h", &value);
+            }
+            AttManMsg::Rotation(value) => {
+                state.drafts.rotation = value.clone();
+                geom(def, "att_rot", &value);
+            }
+            AttManMsg::Width(value) => {
+                state.drafts.width = value.clone();
+                geom(def, "att_wf", &value);
+            }
+            AttManMsg::Oblique(value) => {
+                state.drafts.oblique = value.clone();
+                geom(def, "att_ob", &value);
+            }
+            AttManMsg::Boundary(value) => {
+                state.drafts.boundary = value.clone();
+                geom(def, "att_bwidth", &value);
+            }
+            AttManMsg::Annotative(on) => geom(def, "att_annotative", yes(on)),
+            AttManMsg::Backwards(on) => geom(def, "att_backward", yes(on)),
+            AttManMsg::UpsideDown(on) => geom(def, "att_upside_down", yes(on)),
+            AttManMsg::Layer(value) => common(def, "layer", &value),
+            AttManMsg::Linetype(value) => common(def, "linetype", &value),
+            AttManMsg::Color(value) => {
+                if let Some(color) = dialog::parse_color(&value) {
+                    def.common.color = color;
+                }
+            }
+            AttManMsg::Lineweight(value) => {
+                if let Some(lw) = dialog::parse_lineweight(&value) {
+                    def.common.line_weight = lw;
+                }
+            }
+            _ => return Task::none(),
+        }
+        state.dirty = true;
+        self.attman_after_edit(i)
+    }
+
+    fn attman_after_edit(&mut self, i: usize) -> Task<Message> {
+        if dialog::prefs().live {
+            self.attman_commit(i, false, false);
+        }
+        Task::none()
+    }
+
+    /// The pick of `_ATTMAN_PICK <hex handle>`: show the picked reference's
+    /// block. A reference of a block without attributes is reported.
+    pub(in crate::app) fn attman_picked(&mut self, i: usize, handle: &str) -> Task<Message> {
+        self.active_modal = Some(crate::app::ModalKind::AttMan);
+        let Ok(value) = u64::from_str_radix(handle, 16) else {
+            return Task::none();
+        };
+        let name = match self.tabs[i].scene.document.get_entity(Handle::new(value)) {
+            Some(EntityType::Insert(insert)) => insert.block_name.clone(),
+            _ => return Task::none(),
+        };
+        let index = self.attman.as_ref().and_then(|state| {
+            state
+                .blocks
+                .iter()
+                .position(|b| b.name.eq_ignore_ascii_case(&name))
+        });
+        match index {
+            Some(index) => self.on_attman(AttManMsg::Block(index)),
+            None => {
+                if let Some(state) = self.attman.as_mut() {
+                    state.error = Some(
+                        crate::tf!("Block table contains no attributed block named {}.", name)
+                            .into_owned(),
+                    );
+                }
+                Task::none()
+            }
+        }
+    }
+
+    /// Take back the changes written live since the last Apply, quietly.
+    fn attman_withdraw_live(&mut self) {
+        let Some(state) = self.attman.as_mut() else {
+            return;
+        };
+        let steps = std::mem::take(&mut state.live_steps);
+        for row in &mut state.rows {
+            row.live_tag = row.original_tag.clone();
+        }
+        if steps > 0 {
+            self.undo_steps_reported(steps, false);
+        }
+    }
+
+    /// Write the working copy to the drawing. `finish` (Apply / OK / Sync)
+    /// leaves exactly one undo step: the live changes are taken back and the
+    /// whole list is written again in one step. Otherwise (a live edit) the
+    /// write joins the open live step. `sync` rebuilds the references'
+    /// attributes even when "apply to existing references" is off. Returns
+    /// false when a field is invalid.
+    fn attman_commit(&mut self, i: usize, finish: bool, sync: bool) -> bool {
+        let Some(state) = self.attman.as_mut() else {
+            return false;
+        };
+        if finish {
+            if let Some(error) = state
+                .rows
+                .iter()
+                .find_map(|row| crate::ui::window::attdef_dialog::tag_error(&row.def.tag))
+                .or_else(|| {
+                    crate::ui::window::attdef_dialog::tag_error(&state.drafts.tag)
+                        .filter(|_| state.selected.is_some())
+                })
+            {
+                state.error = Some(crate::t!(error).into_owned());
+                return false;
+            }
+            state.error = None;
+            self.attman_withdraw_live();
+        }
+        let Some(state) = self.attman.as_mut() else {
+            return false;
+        };
+        let Some(name) = state.current_block().map(|b| b.name.clone()) else {
+            return false;
+        };
+        let rows: Vec<(Handle, String, AttributeDefinition)> = state
+            .rows
+            .iter()
+            .map(|r| (r.handle, r.live_tag.clone(), r.def.clone()))
+            .collect();
+        let removed = state.removed.clone();
+        let write = state.dirty || sync;
+        let synced = sync || dialog::prefs().apply_existing;
+        // A live step something else closed starts a new one.
+        let open = !finish && state.live_steps > 0 && self.tabs[i].history.pending.is_some();
+        if write {
+            if !open {
+                self.push_undo_snapshot(i, "BATTMAN");
+            }
+            self.attman_write(i, &name, &rows, &removed, synced);
+        }
+        if finish && write {
+            self.finish_pending_history(i);
+        }
+        let Some(state) = self.attman.as_mut() else {
+            return false;
+        };
+        if finish {
+            state.dirty = false;
+            state.removed.clear();
+            for row in &mut state.rows {
+                row.original_tag = row.def.tag.clone();
+                row.live_tag = row.def.tag.clone();
+            }
+        } else if write {
+            if !open {
+                state.live_steps += 1;
+            }
+            // The references now hold the written tags.
+            if synced {
+                for row in &mut state.rows {
+                    row.live_tag = row.def.tag.clone();
+                }
+            }
+        }
+        true
+    }
+
+    /// The definition list of `block` becomes `rows` (in that order) less
+    /// `removed`; with `sync`, every reference is rebuilt from it, keeping
+    /// each attribute's value through a tag rename.
+    fn attman_write(
+        &mut self,
+        i: usize,
+        block: &str,
+        rows: &[(Handle, String, AttributeDefinition)],
+        removed: &[Handle],
+        sync: bool,
+    ) {
+        let document = &mut self.tabs[i].scene.document;
+        for handle in removed {
+            if document.get_entity(*handle).is_some() {
+                document.remove_entity(*handle);
+            }
+        }
+        // Each definition keeps its object; the definitions take the slots
+        // the block's definitions held, in the new order.
+        for (handle, _, def) in rows {
+            if let Some(EntityType::AttributeDefinition(slot)) = document.get_entity_mut(*handle) {
+                let mut def = def.clone();
+                def.common.handle = *handle;
+                def.common.owner_handle = slot.common.owner_handle;
+                *slot = def;
+            }
+        }
+        if let Some(br) = document.block_records.get_mut(block) {
+            br.entity_handles.retain(|h| !removed.contains(h));
+            let mut order = rows.iter().map(|(handle, _, _)| *handle);
+            for slot in br.entity_handles.iter_mut() {
+                if rows.iter().any(|(handle, _, _)| handle == slot) {
+                    if let Some(next) = order.next() {
+                        *slot = next;
+                    }
+                }
+            }
+        }
+        // Annotative definitions carry the scale context data.
+        for (handle, _, def) in rows {
+            crate::scene::annotative::set_entity_annotative(
+                &mut self.tabs[i].scene.document,
+                *handle,
+                def.flags.annotative,
+            );
+        }
+        if sync {
+            // A renamed definition keeps the value each reference held.
+            let renames: Vec<(String, String)> = rows
+                .iter()
+                .filter(|(_, old, def)| !old.eq_ignore_ascii_case(&def.tag))
+                .map(|(_, old, def)| (old.clone(), def.tag.clone()))
+                .collect();
+            if !renames.is_empty() {
+                let inserts: Vec<Handle> = self.tabs[i]
+                    .scene
+                    .document
+                    .entities()
+                    .filter_map(|e| match e {
+                        EntityType::Insert(ins) if ins.block_name.eq_ignore_ascii_case(block) => {
+                            Some(ins.common.handle)
+                        }
+                        _ => None,
+                    })
+                    .collect();
+                for handle in inserts {
+                    if let Some(EntityType::Insert(ins)) =
+                        self.tabs[i].scene.document.get_entity_mut(handle)
+                    {
+                        for attribute in &mut ins.attributes {
+                            if let Some((_, new)) = renames
+                                .iter()
+                                .find(|(old, _)| old.eq_ignore_ascii_case(&attribute.tag))
+                            {
+                                attribute.tag = new.clone();
+                            }
+                        }
+                    }
+                }
+            }
+            self.attsync_block_with(i, block, false);
+        }
+        self.tabs[i].scene.bump_geometry();
+        self.tabs[i].dirty = true;
+    }
+}
+
+fn geom(def: &mut AttributeDefinition, field: &str, value: &str) {
+    let mut entity = EntityType::AttributeDefinition(def.clone());
+    apply_geom_prop(&mut entity, field, value);
+    if let EntityType::AttributeDefinition(updated) = entity {
+        *def = updated;
+    }
+}
+
+fn common(def: &mut AttributeDefinition, field: &str, value: &str) {
+    let mut entity = EntityType::AttributeDefinition(def.clone());
+    apply_common_prop(&mut entity, field, value);
+    if let EntityType::AttributeDefinition(updated) = entity {
+        *def = updated;
+    }
+}

src/app/commands/block_cmdline.rs

@@ -135,7 +135,12 @@ impl OpenCADStudio {
                         .push_output("This drawing contains no attributed blocks.");
                     return Some(Task::none());
                 }
-                self.open_attedit_dialog();
+                let preselected = self.tabs[i].scene.selected_handles_in_order();
+                return Some(self.open_attman(i, &preselected));
+            }
+            cmd if cmd == "_ATTMAN_PICK" || cmd.starts_with("_ATTMAN_PICK ") => {
+                self.tabs[i].active_cmd = None;
+                return Some(self.attman_picked(i, cmd["_ATTMAN_PICK".len()..].trim()));
             }
             _ => return None,
         }
@@ -166,6 +171,11 @@ impl OpenCADStudio {
     /// attributes whose definition is gone are dropped. Constant definitions
     /// carry no attribute.
     pub(in crate::app) fn attsync_block(&mut self, i: usize, block: &str) {
+        self.attsync_block_with(i, block, true);
+    }
+
+    /// [`Self::attsync_block`], opening its own undo step only when `undo`.
+    pub(in crate::app) fn attsync_block_with(&mut self, i: usize, block: &str, undo: bool) {
         use codec::Entity as _;
         let doc = &self.tabs[i].scene.document;
         let attdefs: Vec<codec::entities::AttributeDefinition> = doc
@@ -200,7 +210,9 @@ impl OpenCADStudio {
         if inserts.is_empty() {
             return;
         }
-        self.push_undo_snapshot(i, "ATTSYNC");
+        if undo {
+            self.push_undo_snapshot(i, "ATTSYNC");
+        }
         let mut changes = Vec::new();
         for handle in inserts {
             let document = &self.tabs[i].scene.document;

src/app/commands/blocks.rs

@@ -1790,9 +1790,9 @@ mod tests {
             .join("\n")
     }
 
-    // ATTMAN and BATTMAN are the Block Attribute Manager; this build routes both
-    // to the attribute editor (ATTEDIT). A drawing without attributed blocks
-    // has nothing to manage, which both report instead of opening it.
+    // ATTMAN and BATTMAN open the Block Attribute Manager. A drawing without
+    // attributed blocks has nothing to manage, which both report instead of
+    // opening it.
     #[test]
     fn attman_and_battman_report_a_drawing_without_attributed_blocks() {
         for command in ["ATTMAN", "BATTMAN"] {

src/app/commands/mod.rs

@@ -5,6 +5,7 @@ use iced::Task;
 use std::path::PathBuf;
 
 mod attdef;
+mod attman;
 mod block_cmdline;
 mod blocks;
 mod blockvars;

src/app/control/actions.rs

@@ -123,6 +123,7 @@ pub(super) const NAMES: &[&str] = &[
     "block_def_dialog",
     "attdef_dialog",
     "field_dialog",
+    "attman_dialog",
     "sheet_set",
     "close_document",
     "toggle_properties",
@@ -1570,6 +1571,96 @@ impl OpenCADStudio {
                     _ => return Err(failure("invalid_value", "Unknown attdef dialog field")),
                 })
             }
+            // The open Block Attribute Manager: `block=<name>`, `select=<row>`,
+            // `up`, `down`, `remove`, `edit`, `tab=attribute|text|properties`,
+            // `tag=…`, `prompt=…`, `default=…`, `mode=<invisible|verify|preset|multiline>:0|1`,
+            // `style=…`, `justify=MC`, `height=…`, `rotation=…`, `width=…`, `oblique=…`,
+            // `boundary=…`, `annotative=0|1`, `backwards=0|1`, `upside_down=0|1`,
+            // `layer=…`, `linetype=…`, `color=…`, `lineweight=…`, `column=<name>:0|1`,
+            // `more_columns`, `apply_existing=0|1`, `emphasize=0|1`, `live=0|1`,
+            // `pick`, `sync`, `apply`, `ok`, `cancel`.
+            "attman_dialog" => {
+                use crate::ui::window::attman_dialog::{AttManMsg as A, Column, EditTab};
+                let Some(state) = self.attman.as_ref() else {
+                    return Err(failure("no_dialog", "The attribute manager is not open"));
+                };
+                let value = string(req, "value")?;
+                let (key, v) = value.split_once('=').unwrap_or((value, ""));
+                let on = v == "1";
+                Message::AttMan(match key {
+                    "block" => A::Block(
+                        state
+                            .blocks
+                            .iter()
+                            .position(|b| b.name.eq_ignore_ascii_case(v))
+                            .ok_or_else(|| failure("invalid_value", "No such attributed block"))?,
+                    ),
+                    "select" => A::Select(
+                        v.parse()
+                            .ok()
+                            .filter(|r: &usize| *r < state.rows.len())
+                            .ok_or_else(|| failure("invalid_value", "No such row"))?,
+                    ),
+                    "up" => A::MoveUp,
+                    "down" => A::MoveDown,
+                    "remove" => A::Remove,
+                    "edit" => A::ToggleEdit,
+                    "tab" => A::Tab(match v {
+                        "text" => EditTab::Text,
+                        "properties" => EditTab::Properties,
+                        _ => EditTab::Attribute,
+                    }),
+                    "tag" => A::Tag(v.into()),
+                    "prompt" => A::Prompt(v.into()),
+                    "default" => A::Default(v.into()),
+                    "mode" => {
+                        let (mode, state) = v.split_once(':').unwrap_or((v, "1"));
+                        let mode = match mode {
+                            "invisible" => "invisible",
+                            "verify" => "verify",
+                            "preset" => "preset",
+                            "multiline" => "multiline",
+                            _ => return Err(failure("invalid_value", "Unknown mode")),
+                        };
+                        A::Mode(mode, state == "1")
+                    }
+                    "style" => A::Style(v.into()),
+                    "justify" => A::Justify(
+                        crate::modules::draw::draw::attdef::Justify::from_keyword(v)
+                            .ok_or_else(|| failure("invalid_value", "Unknown justification"))?,
+                    ),
+                    "height" => A::Height(v.into()),
+                    "rotation" => A::Rotation(v.into()),
+                    "width" => A::Width(v.into()),
+                    "oblique" => A::Oblique(v.into()),
+                    "boundary" => A::Boundary(v.into()),
+                    "annotative" => A::Annotative(on),
+                    "backwards" => A::Backwards(on),
+                    "upside_down" => A::UpsideDown(on),
+                    "layer" => A::Layer(v.into()),
+                    "linetype" => A::Linetype(v.into()),
+                    "color" => A::Color(v.into()),
+                    "lineweight" => A::Lineweight(v.into()),
+                    "column" => {
+                        let (name, state) = v.split_once(':').unwrap_or((v, "1"));
+                        A::Column(
+                            Column::from_name(name)
+                                .ok_or_else(|| failure("invalid_value", "Unknown column"))?,
+                            state == "1",
+                        )
+                    }
+                    "more_columns" => A::MoreColumns,
+                    "apply_existing" => A::ApplyExisting(on),
+                    "emphasize" => A::Emphasize(on),
+                    "live" => A::Live(on),
+                    "pick" => A::PickBlock,
+                    "sync" => A::Sync,
+                    "apply" => A::Apply,
+                    "ok" => A::Ok,
+                    "cancel" => A::Cancel,
+                    _ => return Err(failure("invalid_value", "Unknown attribute manager field")),
+                })
+            }
             // One field of the open Field dialog: `category=<index>`, `name=Date`,
             // `date=yyyy-MM-dd`, `case=0..4`, `file=1|2|3`, `ext=0|1`, `size=0..2`,
             // `sysvar=dimscale`, `diesel=…`, `named_type=<index>`, `named=<index>`,
@@ -2142,6 +2233,9 @@ impl OpenCADStudio {
                 Some(crate::app::ModalKind::Field) => {
                     Message::FieldDialog(crate::ui::window::field_dialog::FieldDialogMsg::Ok)
                 }
+                Some(crate::app::ModalKind::AttMan) => {
+                    Message::AttMan(crate::ui::window::attman_dialog::AttManMsg::Ok)
+                }
                 _ => return Err(failure("no_dialog", "No dialog with an OK button is open")),
             },
             "close_document" => Message::TabClose(self.tabs[self.active_tab].id),

src/app/history.rs

@@ -1287,6 +1287,12 @@ impl OpenCADStudio {
     }
 
     pub(super) fn undo_steps(&mut self, steps: usize) {
+        self.undo_steps_reported(steps, true);
+    }
+
+    /// [`Self::undo_steps`]; `report` false takes the steps back without
+    /// the command-line notice (a dialog withdrawing its own live changes).
+    pub(super) fn undo_steps_reported(&mut self, steps: usize, report: bool) {
         let i = self.active_tab;
         self.finish_pending_history(i);
         let available = self.tabs[i].history.undo_stack.len();
@@ -1353,8 +1359,10 @@ impl OpenCADStudio {
             native_graph_changed,
             &changes,
         );
-        self.command_line
-            .push_output(crate::tf!("Undo: {last_label}").as_ref());
+        if report {
+            self.command_line
+                .push_output(crate::tf!("Undo: {last_label}").as_ref());
+        }
     }
 
     pub(super) fn redo_steps(&mut self, steps: usize) {

src/app/mod.rs

@@ -592,6 +592,8 @@ pub(super) struct OpenCADStudio {
     /// ATTDEF dialog and Edit Attribute Definition dialog; `None` while closed.
     attdef_dialog: Option<crate::ui::window::attdef_dialog::AttdefDialogState>,
     attdef_edit: Option<crate::ui::window::attdef_dialog::AttdefEditState>,
+    /// Block Attribute Manager working copy; `None` while it is closed.
+    attman: Option<crate::ui::window::attman_dialog::AttManState>,
     /// Field dialog working copy; `None` while closed.
     field_dialog: Option<crate::ui::window::field_dialog::FieldDialogState>,
     point_cloud_color_map: Option<crate::ui::window::pdf_dialogs::PointCloudColorMapState>,
@@ -2206,6 +2208,8 @@ pub enum ModalKind {
     GeometricTolerance,
     AttDef,
     AttDefEdit,
+    /// Block Attribute Manager (BATTMAN / ATTMAN).
+    AttMan,
     CountInvalidArea,
     Field,
     DraftingSettings,
@@ -4425,6 +4429,8 @@ pub enum Message {
     /// An edit in one of the PDF dialogs.
     PdfDialog(crate::ui::window::pdf_dialogs::PdfDialogMsg),
     AttdefDialog(crate::ui::window::attdef_dialog::AttdefDialogMsg),
+    /// Block Attribute Manager edits.
+    AttMan(crate::ui::window::attman_dialog::AttManMsg),
     FieldDialog(crate::ui::window::field_dialog::FieldDialogMsg),
     /// An edit in the Edit Reference dialog.
     RefEditDialog(crate::ui::window::refedit_dialog::RefEditDialogMsg),
@@ -4638,6 +4644,7 @@ impl OpenCADStudio {
             pdf_attach: None,
             point_cloud_attach: None,
             attdef_dialog: None,
+            attman: None,
             attdef_edit: None,
             field_dialog: None,
             point_cloud_color_map: None,

src/app/update/mod.rs

@@ -233,6 +233,7 @@ impl OpenCADStudio {
             }
             Some(GeometricTolerance) => self.geometric_tolerance = None,
             Some(BlockDefinition) => self.block_definition = None,
+            Some(AttMan) => self.attman = None,
             Some(BlockEditPicker) => self.block_edit_picker = None,
             Some(BlockSaveAs) => self.block_save_as = None,
             Some(PdfAttach) => self.pdf_attach = None,
@@ -2441,6 +2442,7 @@ impl OpenCADStudio {
 
             Message::PdfDialog(message) => self.update_pdf_dialog(message),
             Message::AttdefDialog(message) => self.on_attdef_dialog(message),
+            Message::AttMan(message) => self.on_attman(message),
             Message::FieldDialog(message) => self.on_field_dialog(message),
             Message::RefEditDialog(message) => self.update_refedit_dialog(message),
             Message::PcManager(message) => self.update_pc_manager(message),
@@ -9666,6 +9668,13 @@ impl OpenCADStudio {
                     self.close_field_dialog();
                     return Task::none();
                 }
+                // Closing the attribute manager is its Cancel: live changes
+                // are taken back.
+                if self.active_modal == Some(super::ModalKind::AttMan) {
+                    return self.on_attman(
+                        crate::ui::window::attman_dialog::AttManMsg::Cancel,
+                    );
+                }
                 if matches!(
                     self.active_modal,
                     Some(super::ModalKind::AttDef | super::ModalKind::AttDefEdit)

src/app/view/modal.rs

@@ -52,6 +52,7 @@ impl OpenCADStudio {
             Some(K::GeometricTolerance) => crate::t!("Geometric Tolerance").into_owned(),
             Some(K::AttDef) => crate::t!("Attribute Definition").into_owned(),
             Some(K::AttDefEdit) => crate::t!("Edit Attribute Definition").into_owned(),
+            Some(K::AttMan) => crate::t!("Block Attribute Manager").into_owned(),
             Some(K::CountInvalidArea) => crate::t!("Count - Invalid Area").into_owned(),
             Some(K::Field) => crate::t!("Field").into_owned(),
             Some(K::DraftingSettings) => crate::t!("Drafting Settings").into_owned(),
@@ -630,6 +631,12 @@ impl OpenCADStudio {
             super::super::ModalKind::CountInvalidArea => sized_flow(ex, 520, 260, |flow| {
                 crate::ui::window::count_palette::invalid_area_view(&self.count_palette, flow)
             }),
+            super::super::ModalKind::AttMan => {
+                let state = self.attman.as_ref()?;
+                sized_flow(ex, 880, 660, |flow| {
+                    crate::ui::window::attman_dialog::view(state, flow)
+                })
+            }
             super::super::ModalKind::AttDefEdit => {
                 let state = self.attdef_edit.as_ref()?;
                 sized_flow(ex, 460, 220, |flow| {

src/locale_catalog.rs

@@ -7,6 +7,18 @@ pub(super) fn message_attribute(source: &str) -> Option<(&'static str, &'static
         "Specify On-screen, the object option, Allow exploding and this switch are remembered for the next time." => Some(("block-def-dialog", "remembered")),
         "No objects are selected for the block." => Some(("block-def-dialog", "no-objects")),
         "Create empty block" => Some(("block-def-dialog", "create-empty")),
+        "Block Attribute Manager" => Some(("attman", "title")),
+        "Modes" => Some(("attman", "modes")),
+        "{} references" => Some(("attman", "references")),
+        "In drawing: {} · in model space: {}" => Some(("attman", "counts")),
+        "Columns:" => Some(("attman", "columns")),
+        "The Constant mode cannot be changed in the definition." => Some(("attman", "constant-note")),
+        "Show changes in the drawing as they are made" => Some(("attman", "live")),
+        "Apply changes to existing references" => Some(("attman", "apply-existing")),
+        "Emphasize duplicate tags" => Some(("attman", "emphasize")),
+        "Sync" => Some(("attman", "sync")),
+        "BATTMAN manages the attribute definitions of a block." => Some(("attman", "help")),
+        "Block table contains no attributed block named {}." => Some(("attman", "no-attributed-block")),
         "{} entities added" => Some(("ref-edit", "entities-added")),
         "Use REFCLOSE or the Refedit toolbar to end reference editing session." => Some(("ref-edit", "use-refclose")),
         "Specify opposite corner:" => Some(("ref-edit", "opposite-corner")),

src/modules/insert/attman.rs

@@ -8,3 +8,44 @@ pub fn tool() -> ToolDef {
         event: ModuleEvent::Command("ATTMAN".to_string()),
     }
 }
+
+/// The Block Attribute Manager's "Select block" button: one block reference
+/// picked in the drawing, handed back as `_ATTMAN_PICK <hex handle>`.
+pub struct AttmanPickCommand;
+
+impl crate::command::CadCommand for AttmanPickCommand {
+    fn name(&self) -> &'static str {
+        "BATTMAN"
+    }
+
+    fn prompt(&self) -> String {
+        "Select a block:".into()
+    }
+
+    fn needs_entity_pick(&self) -> bool {
+        true
+    }
+
+    fn entity_pick_highlights_hover(&self) -> bool {
+        true
+    }
+
+    fn on_entity_pick(&mut self, handle: codec::Handle, _pt: glam::DVec3) -> crate::command::CmdResult {
+        if handle.is_null() {
+            return crate::command::CmdResult::NeedPoint;
+        }
+        crate::command::CmdResult::Dispatch(format!("_ATTMAN_PICK {:X}", handle.value()))
+    }
+
+    fn on_point(&mut self, _pt: glam::DVec3) -> crate::command::CmdResult {
+        crate::command::CmdResult::NeedPoint
+    }
+
+    fn on_enter(&mut self) -> crate::command::CmdResult {
+        crate::command::CmdResult::Dispatch("_ATTMAN_PICK".into())
+    }
+
+    fn on_escape(&mut self) -> crate::command::CmdResult {
+        crate::command::CmdResult::Dispatch("_ATTMAN_PICK".into())
+    }
+}

src/modules/insert/mod.rs

@@ -2,7 +2,7 @@
 
 mod attdef;
 pub(crate) mod attedit;
-mod attman;
+pub(crate) mod attman;
 pub mod base_point;
 pub(crate) mod block_cmdline;
 mod content_browser;

src/ui/window/mod.rs

@@ -2,6 +2,7 @@ pub mod about;
 pub mod alias_editor;
 pub mod annotation_data;
 pub mod attdef_dialog;
+pub mod attman_dialog;
 pub mod attribute_editor;
 pub mod authoring_palettes;
 pub mod auto_constrain_settings;