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* VisualEditor UserInterface Linear Context class.
*
* @copyright See AUTHORS.txt
*/
/**
* UserInterface context.
*
* @class
* @abstract
* @extends ve.ui.Context
*
* @constructor
* @param {ve.ui.Surface} surface
* @param {Object} [config] Configuration options
*/
ve.ui.LinearContext = function VeUiLinearContext() {
// Parent constructor
ve.ui.LinearContext.super.apply( this, arguments );
// Properties
this.inspector = null;
this.inspectors = this.createInspectorWindowManager();
this.isOpening = false;
this.lastSelectedNode = null;
this.afterContextChangeTimeout = null;
this.afterContextChangeHandler = this.afterContextChange.bind( this );
this.updateDimensionsDebounced = ve.debounce( this.updateDimensions.bind( this ) );
this.persistentSources = [];
// Events
this.surface.getModel().connect( this, {
contextChange: 'onContextChange',
documentUpdate: 'onDocumentUpdate'
} );
this.inspectors.connect( this, { opening: 'onInspectorOpening' } );
};
/* Inheritance */
OO.inheritClass( ve.ui.LinearContext, ve.ui.Context );
/* Static Properties */
/**
* Handle context change event.
*
* While an inspector is opening or closing, all changes are ignored so as to prevent inspectors
* that change the selection from within their setup or teardown processes changing context state.
*
* The response to selection changes is deferred to prevent teardown processes handlers that change
* the selection from causing this function to recurse. These responses are also debounced for
* efficiency, so that if there are three selection changes in the same tick, #afterContextChange only
* runs once.
*
* @see #afterContextChange
*/
ve.ui.LinearContext.prototype.onContextChange = function () {
Iif ( this.inspector && ( this.inspector.isOpening() || this.inspector.isClosing() ) ) {
// Cancel debounced change handler
clearTimeout( this.afterContextChangeTimeout );
this.afterContextChangeTimeout = null;
this.lastSelectedNode = this.surface.getModel().getSelectedNode();
} else {
if ( this.afterContextChangeTimeout === null ) {
// Ensure change is handled on next cycle
this.afterContextChangeTimeout = setTimeout( this.afterContextChangeHandler );
}
}
// Purge related items cache
this.relatedSources = null;
};
/**
* Handle document update event.
*/
ve.ui.LinearContext.prototype.onDocumentUpdate = function () {
// Only mind this event if the menu is visible
if ( this.isVisible() && !this.isEmpty() ) {
// Reuse the debounced context change handler
this.onContextChange();
}
};
/**
* Handle debounced context change events.
*/
ve.ui.LinearContext.prototype.afterContextChange = function () {
var selectedNode = this.surface.getModel().getSelectedNode();
// Reset debouncing state
this.afterContextChangeTimeout = null;
if ( this.isVisible() ) {
if ( !this.isEmpty() ) {
if ( this.isInspectable() ) {
// Change state: menu -> menu
this.teardownMenuItems();
this.setupMenuItems();
this.updateDimensionsDebounced();
} else {
// Change state: menu -> closed
this.toggleMenu( false );
this.toggle( false );
}
} else Eif (
this.inspector &&
( !selectedNode || ( selectedNode !== this.lastSelectedNode ) )
) {
// Change state: inspector -> (closed|menu)
// Unless there is a selectedNode that hasn't changed (e.g. your inspector is editing a node)
this.inspector.close();
}
} else {
if ( this.isInspectable() ) {
// Change state: closed -> menu
this.toggleMenu( true );
this.toggle( true );
}
}
this.lastSelectedNode = selectedNode;
};
/**
* Handle an inspector opening event.
*
* @param {OO.ui.Window} win Window that's being opened
* @param {jQuery.Promise} opening Promise resolved when window is opened; when the promise is
* resolved the first argument will be a promise which will be resolved when the window begins
* closing, the second argument will be the opening data
* @param {Object} data Window opening data
*/
ve.ui.LinearContext.prototype.onInspectorOpening = function ( win, opening ) {
var context = this,
observer = this.surface.getView().surfaceObserver;
this.isOpening = true;
this.inspector = win;
// Shut down the SurfaceObserver as soon as possible, so it doesn't get confused
// by the selection moving around in IE. Will be reenabled when inspector closes.
// FIXME this should be done in a nicer way, managed by the Surface classes
observer.pollOnce();
observer.stopTimerLoop();
opening
.progress( function ( data ) {
context.isOpening = false;
if ( data.state === 'setup' ) {
if ( !context.isVisible() ) {
// Change state: closed -> inspector
context.toggle( true );
}
if ( !context.isEmpty() ) {
// Change state: menu -> inspector
context.toggleMenu( false );
}
}
context.updateDimensionsDebounced();
} )
.then( function ( opened ) {
opened.then( function ( closed ) {
closed.always( function () {
// Don't try to close the inspector if a second
// opening has already been triggered
if ( context.isOpening ) {
return;
}
context.inspector = null;
// Reenable observer
observer.startTimerLoop();
if ( context.isInspectable() ) {
// Change state: inspector -> menu
context.toggleMenu( true );
context.updateDimensionsDebounced();
} else {
// Change state: inspector -> closed
context.toggle( false );
}
} );
} );
} );
};
/**
* Check if context is visible.
*
* @return {boolean} Context is visible
*/
ve.ui.LinearContext.prototype.isVisible = function () {
return this.visible;
};
/**
* Check if current content is inspectable.
*
* @return {boolean} Content is inspectable
*/
ve.ui.LinearContext.prototype.isInspectable = function () {
return !!this.getRelatedSources().length;
};
/**
* Add a persistent source that will stay visible until manually removed.
*
* @param {Object} source Object containing `name`, `model` and `config` properties.
* See #getRelatedSources.
*/
ve.ui.LinearContext.prototype.addPersistentSource = function ( source ) {
this.persistentSources.push(
ve.extendObject( { type: 'persistent' }, source )
);
this.onContextChange();
};
/**
* Remove a persistent source by name
*
* @param {string} name Source name
*/
ve.ui.LinearContext.prototype.removePersistentSource = function ( name ) {
this.persistentSources = this.persistentSources.filter( function ( source ) {
return source.name !== name;
} );
this.onContextChange();
};
/**
* @inheritdoc
*
* Also adds the `embeddable` property to each object.
*/
ve.ui.LinearContext.prototype.getRelatedSources = function () {
var surfaceModel = this.surface.getModel(),
selection = surfaceModel.getSelection(),
selectedModels = [];
if ( !this.relatedSources ) {
this.relatedSources = [];
if ( selection instanceof ve.dm.LinearSelection ) {
selectedModels = this.surface.getView().getSelectedModels();
} else if ( selection instanceof ve.dm.TableSelection ) {
selectedModels = [ surfaceModel.getSelectedNode() ];
}
if ( selectedModels.length ) {
this.relatedSources = this.getRelatedSourcesFromModels( selectedModels );
}
this.relatedSources = this.relatedSources.concat( this.persistentSources );
}
return this.relatedSources;
};
/**
* Get related for selected models
*
* @param {ve.dm.Model[]} selectedModels Models
* @return {Object[]} See #getRelatedSources
*/
ve.ui.LinearContext.prototype.getRelatedSourcesFromModels = function ( selectedModels ) {
var models = [],
relatedSources = [],
items = ve.ui.contextItemFactory.getRelatedItems( selectedModels );
var i, len;
for ( i = 0, len = items.length; i < len; i++ ) {
Iif ( !items[ i ].model.isInspectable() ) {
continue;
}
Eif ( ve.ui.contextItemFactory.isExclusive( items[ i ].name ) ) {
models.push( items[ i ].model );
}
relatedSources.push( {
type: 'item',
embeddable: ve.ui.contextItemFactory.isEmbeddable( items[ i ].name ),
name: items[ i ].name,
model: items[ i ].model
} );
}
var tools = ve.ui.toolFactory.getRelatedItems( selectedModels );
for ( i = 0, len = tools.length; i < len; i++ ) {
Iif ( !tools[ i ].model.isInspectable() ) {
continue;
}
Iif ( models.indexOf( tools[ i ].model ) === -1 ) {
var toolClass = ve.ui.toolFactory.lookup( tools[ i ].name );
relatedSources.push( {
type: 'tool',
embeddable: !toolClass || toolClass.static.makesEmbeddableContextItem,
name: tools[ i ].name,
model: tools[ i ].model
} );
}
}
return relatedSources;
};
/**
* Get inspector window set.
*
* @return {ve.ui.WindowManager}
*/
ve.ui.LinearContext.prototype.getInspectors = function () {
return this.inspectors;
};
/**
* Create a inspector window manager.
*
* @abstract
* @return {ve.ui.WindowManager} Inspector window manager
*/
ve.ui.LinearContext.prototype.createInspectorWindowManager = null;
/**
* @inheritdoc
*/
ve.ui.LinearContext.prototype.destroy = function () {
// Disconnect events
this.surface.getModel().disconnect( this );
this.inspectors.disconnect( this );
// Destroy inspectors WindowManager
this.inspectors.destroy();
// Stop timers
clearTimeout( this.afterContextChangeTimeout );
// Parent method
return ve.ui.LinearContext.super.prototype.destroy.call( this );
};
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