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weakref to enable gc + setting children with iterable + fix various tooltips #3921

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weakref to enable gc + setting children with iterable + fix various tooltips #3921

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d482927
Update Widget List.ipynb
liamb27 Apr 1, 2024
3fec38a
Update package imports
May 26, 2024
2baf3d6
Fix/unify tooltips.
May 26, 2024
53adf75
DirectionalLinkModel - remove link to source and target on cleanup.
May 26, 2024
b9d043e
Add weakref with opt in automatic widget deletion using 'enable_weakr…
May 26, 2024
cf8ef63
Add Children for Box (and subclasses) to support validation of any ty…
May 26, 2024
54bd2c6
Update yarn.lock (ran jlpm dlx yarn-berry-deduplicate).
May 26, 2024
75da2f9
Run lint.
May 28, 2024
0c1dafe
Fix tests that need dummy comm & update yarn.lock.
Jun 9, 2024
077d950
Merge branch 'main' of https://github.com/jupyter-widgets/ipywidgets …
Aug 31, 2024
3e49c8e
Fix tests and lock file.
Aug 31, 2024
7fa9cba
Simplify tooltips to work everywhere
Sep 10, 2024
234752c
Remove unnecessary code.
Sep 11, 2024
9d5a482
Update the widget model specification for 'Children'.
Sep 12, 2024
8286c7c
Make _model_id a property
Oct 26, 2024
dec5524
Merge branch 'main' of https://github.com/jupyter-widgets/ipywidgets …
Nov 2, 2024
ca3d0cb
Change _instances from 'global' variable to class variable.
Nov 4, 2024
1833ca0
Merge branch 'jupyter-widgets:main' into weakref
fleming79 Oct 15, 2025
4aff0cd
Simplify tests (some were failing for an unknown reason when run toge…
Oct 17, 2025
4869104
Fix create_markdown accessing deprecated (removed _widget_types).
Oct 18, 2025
3541511
Change from using Widget._instances class variable to the global _wid…
Oct 19, 2025
1243f70
Improved resilience of Widget.get_state to omit close items in boxes …
Oct 21, 2025
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1 change: 0 additions & 1 deletion packages/base-manager/package.json
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Expand Up @@ -50,7 +50,6 @@
"chai": "^4.0.0",
"chai-as-promised": "^7.0.0",
"expect.js": "^0.3.1",
"istanbul-instrumenter-loader": "^3.0.1",
"karma": "^6.3.3",
"karma-chrome-launcher": "^3.1.0",
"karma-coverage": "^2.0.3",
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3 changes: 1 addition & 2 deletions packages/base/package.json
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Expand Up @@ -35,7 +35,7 @@
"dependencies": {
"@jupyterlab/services": "^6.0.0 || ^7.0.0",
"@lumino/coreutils": "^1.11.1 || ^2.1",
"@lumino/messaging": "^1.10.1 || ^2.1",
"@lumino/messaging": "^1.10.1 || ^2.0.1",
"@lumino/widgets": "^1.30.0 || ^2.1",
"@types/backbone": "1.4.14",
"@types/lodash": "^4.14.134",
Expand All @@ -55,7 +55,6 @@
"chai": "^4.0.0",
"chai-as-promised": "^7.0.0",
"expect.js": "^0.3.1",
"istanbul-instrumenter-loader": "^3.0.1",
"karma": "^6.3.3",
"karma-chrome-launcher": "^3.1.0",
"karma-coverage": "^2.0.3",
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8 changes: 6 additions & 2 deletions packages/base/src/widget.ts
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Expand Up @@ -1101,14 +1101,18 @@ export class DOMWidgetView extends WidgetView {
}

updateTooltip(): void {
const title = this.model.get('tooltip');
const title = this.tooltip;
if (!title) {
this.el.removeAttribute('title');
} else if (this.model.get('description').length === 0) {
} else if (!this.model.get('description')) {
this.el.setAttribute('title', title);
}
}

get tooltip() {
return this.model.get('tooltip') ?? this.model.get('description');
}

/**
* Update the DOM classes applied to an element, default to this.el.
*/
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5 changes: 2 additions & 3 deletions packages/controls/package.json
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Expand Up @@ -35,9 +35,9 @@
},
"dependencies": {
"@jupyter-widgets/base": "^6.0.10",
"@lumino/algorithm": "^1.9.1 || ^2.1",
"@lumino/algorithm": "^1.9.2 || ^2.0.1",
"@lumino/domutils": "^1.8.1 || ^2.1",
"@lumino/messaging": "^1.10.1 || ^2.1",
"@lumino/messaging": "^1.10.1 || ^2.0.1",
"@lumino/signaling": "^1.10.1 || ^2.1",
"@lumino/widgets": "^1.30.0 || ^2.1",
"d3-color": "^3.0.1",
Expand All @@ -57,7 +57,6 @@
"chai": "^4.0.0",
"css-loader": "^6.5.1",
"expect.js": "^0.3.1",
"istanbul-instrumenter-loader": "^3.0.1",
"karma": "^6.3.3",
"karma-chrome-launcher": "^3.1.0",
"karma-coverage": "^2.0.3",
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13 changes: 5 additions & 8 deletions packages/controls/src/widget_bool.ts
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Expand Up @@ -153,8 +153,7 @@ export class CheckboxView extends DescriptionView {
this.descriptionSpan.textContent = description;
}
this.typeset(this.descriptionSpan);
this.descriptionSpan.title = description;
this.checkbox.title = description;
this.updateTooltip();
}

/**
Expand All @@ -181,13 +180,11 @@ export class CheckboxView extends DescriptionView {
}

updateTooltip(): void {
super.updateTooltip();
if (!this.checkbox) return; // we might be constructing the parent
const title = this.model.get('tooltip');
if (!title) {
this.checkbox.removeAttribute('title');
} else if (this.model.get('description').length === 0) {
this.checkbox.setAttribute('title', title);
}
const title = this.tooltip;
this.checkbox.setAttribute('title', title);
this.descriptionSpan.setAttribute('title', title);
}

events(): { [e: string]: string } {
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3 changes: 2 additions & 1 deletion packages/controls/src/widget_description.ts
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Expand Up @@ -98,8 +98,9 @@ export class DescriptionView extends DOMWidgetView {
}

updateTooltip(): void {
super.updateTooltip();
if (!this.label) return;
this.label.title = this.model.get('tooltip');
this.label.title = this.tooltip;
}

label: HTMLLabelElement;
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3 changes: 3 additions & 0 deletions packages/controls/src/widget_link.ts
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Expand Up @@ -85,9 +85,12 @@ export class DirectionalLinkModel extends CoreWidgetModel {
undefined
);
this.stopListening(this.sourceModel, 'destroy', undefined);
this.set('source', [null, '']);
}
if (this.targetModel) {
this.stopListening(this.targetModel, 'destroy', undefined);
this.set('target', [null, '']);
this.save_changes();
}
}

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8 changes: 2 additions & 6 deletions packages/controls/src/widget_selection.ts
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Expand Up @@ -68,13 +68,9 @@ export class SelectionView extends DescriptionView {
}

updateTooltip(): void {
super.updateTooltip();
if (!this.listbox) return; // we might be constructing the parent
const title = this.model.get('tooltip');
if (!title) {
this.listbox.removeAttribute('title');
} else if (this.model.get('description').length === 0) {
this.listbox.setAttribute('title', title);
}
this.listbox.setAttribute('title', this.tooltip);
}

listbox: HTMLSelectElement;
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16 changes: 4 additions & 12 deletions packages/controls/src/widget_string.ts
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Expand Up @@ -379,13 +379,9 @@ export class TextareaView extends StringView {
}

updateTooltip(): void {
super.updateTooltip();
if (!this.textbox) return; // we might be constructing the parent
const title = this.model.get('tooltip');
if (!title) {
this.textbox.removeAttribute('title');
} else if (this.model.get('description').length === 0) {
this.textbox.setAttribute('title', title);
}
this.textbox.setAttribute('title', this.tooltip);
}

events(): { [e: string]: string } {
Expand Down Expand Up @@ -505,13 +501,9 @@ export class TextView extends StringView {
}

updateTooltip(): void {
super.updateTooltip();
if (!this.textbox) return; // we might be constructing the parent
const title = this.model.get('tooltip');
if (!title) {
this.textbox.removeAttribute('title');
} else if (this.model.get('description').length === 0) {
this.textbox.setAttribute('title', title);
}
this.textbox.setAttribute('title', this.tooltip);
}

update(options?: any): void {
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2 changes: 1 addition & 1 deletion packages/html-manager/package.json
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Expand Up @@ -46,7 +46,7 @@
"@jupyterlab/outputarea": "^3.0.0 || ^4.0.0",
"@jupyterlab/rendermime": "^3.0.0 || ^4.0.0",
"@jupyterlab/rendermime-interfaces": "^3.0.0 || ^4.0.0",
"@lumino/messaging": "^1.10.1 || ^2.1",
"@lumino/messaging": "^1.10.1 || ^2.0.1",
"@lumino/widgets": "^1.30.0 || ^2.1",
"ajv": "^8.6.0",
"jquery": "^3.1.1",
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2 changes: 1 addition & 1 deletion python/ipywidgets/ipywidgets/widgets/__init__.py
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@@ -1,7 +1,7 @@
# Copyright (c) Jupyter Development Team.
# Distributed under the terms of the Modified BSD License.

from .widget import Widget, CallbackDispatcher, register, widget_serialization
from .widget import Widget, CallbackDispatcher, register, widget_serialization, enable_weakreference, disable_weakreference
from .domwidget import DOMWidget
from .valuewidget import ValueWidget

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5 changes: 2 additions & 3 deletions python/ipywidgets/ipywidgets/widgets/tests/test_send_state.py
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Expand Up @@ -9,12 +9,11 @@

from ..._version import __control_protocol_version__


# A widget with simple traits
class SimpleWidget(Widget):
a = Bool().tag(sync=True)
b = Tuple(Bool(), Bool(), Bool(), default_value=(False, False, False)).tag(
sync=True
)
b = Tuple(Bool(), Bool(), Bool(), default_value=(False, False, False)).tag(sync=True)
c = List(Bool()).tag(sync=True)


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