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* VisualEditor ContentEditable ResizableNode class.
*
* @copyright See AUTHORS.txt
*/
/**
* ContentEditable resizable node.
*
* @class
* @abstract
*
* @constructor
* @param {jQuery} [$resizable=this.$element] Resizable DOM element
* @param {Object} [config] Configuration options
* @param {number|null} [config.snapToGrid=10] Snap to a grid of size X when the shift key is held. Null disables.
* @param {boolean} [config.outline=false] Resize using an outline of the element only, don't live preview.
* @param {boolean} [config.showSizeLabel=true] Show a label with the current dimensions while resizing
* @param {boolean} [config.showScaleLabel=true] Show a label with the current scale while resizing
*/
ve.ce.ResizableNode = function VeCeResizableNode( $resizable, config ) {
config = config || {};
// Properties
this.$resizable = $resizable || this.$element;
this.resizing = false;
this.$resizeHandles = $( '<div>' );
this.snapToGrid = config.snapToGrid !== undefined ? config.snapToGrid : 10;
this.outline = !!config.outline;
this.showSizeLabel = config.showSizeLabel !== false;
this.showScaleLabel = config.showScaleLabel !== false;
// Only gets enabled when the original dimensions are provided
this.canShowScaleLabel = false;
Eif ( this.showSizeLabel || this.showScaleLabel ) {
this.$sizeText = $( '<span>' ).addClass( 've-ce-resizableNode-sizeText' );
this.$sizeLabel = $( '<div>' ).addClass( 've-ce-resizableNode-sizeLabel' ).append( this.$sizeText );
}
this.resizableOffset = null;
this.resizableSurface = null;
// Events
this.connect( this, {
focus: 'onResizableFocus',
blur: 'onResizableBlur',
setup: 'onResizableSetup',
teardown: 'onResizableTeardown',
resizing: 'onResizableResizing',
resizeEnd: 'onResizableFocus',
rerender: 'onResizableFocus',
align: 'onResizableAlign'
} );
this.model.connect( this, {
attributeChange: 'onResizableAttributeChange'
} );
// Initialization
this.$resizeHandles
.addClass( 've-ce-resizableNode-handles' )
.append( $( '<div>' )
.addClass( 've-ce-resizableNode-nwHandle' )
.data( 'handle', 'nw' ) )
.append( $( '<div>' )
.addClass( 've-ce-resizableNode-neHandle' )
.data( 'handle', 'ne' ) )
.append( $( '<div>' )
.addClass( 've-ce-resizableNode-seHandle' )
.data( 'handle', 'se' ) )
.append( $( '<div>' )
.addClass( 've-ce-resizableNode-swHandle' )
.data( 'handle', 'sw' ) );
};
/* Inheritance */
OO.initClass( ve.ce.ResizableNode );
/* Events */
/**
* @event ve.ce.ResizableNode#resizeStart
*/
/**
* @event ve.ce.ResizableNode#resizing
* @param {Object} dimensions Dimension object containing width & height
*/
/**
* @event ve.ce.ResizableNode#resizeEnd
*/
/* Methods */
/**
* Check if the node is resizable in its current state
*
* @return {boolean} The node is currently resizable
*/
ve.ce.ResizableNode.prototype.isResizable = function () {
return this.$resizable && !!this.$resizable.length && !OO.ui.isMobile() &&
!( this.root && this.root.getSurface() && this.root.getSurface().isReadOnly() );
};
/**
* Get and cache the relative offset of the $resizable node
*
* @return {Object} Position coordinates, containing top & left
*/
ve.ce.ResizableNode.prototype.getResizableOffset = function () {
if ( !this.resizableOffset ) {
this.resizableOffset = OO.ui.Element.static.getRelativePosition(
this.$resizable, this.resizableSurface.getSurface().$element
);
}
return this.resizableOffset;
};
/**
* Set the original dimensions of the scalable object
*
* @param {Object} dimensions
*/
ve.ce.ResizableNode.prototype.setOriginalDimensions = function ( dimensions ) {
Iif ( !this.isResizable() ) {
return;
}
const scalable = this.model.getScalable();
scalable.setOriginalDimensions( dimensions );
// If dimensions are valid and the scale label is desired, enable it
this.canShowScaleLabel = this.showScaleLabel &&
scalable.getOriginalDimensions().width &&
scalable.getOriginalDimensions().height;
};
/**
* Hide the size label
*/
ve.ce.ResizableNode.prototype.hideSizeLabel = function () {
if ( !this.isResizable() ) {
return;
}
// Defer the removal of this class otherwise other DOM changes may cause
// the opacity transition to not play out smoothly
setTimeout( () => {
this.$sizeLabel.removeClass( 've-ce-resizableNode-sizeLabel-resizing' );
} );
// Actually hide the size label after it's done animating
setTimeout( () => {
this.$sizeLabel.addClass( 'oo-ui-element-hidden' );
}, 200 );
};
/**
* Update the contents and position of the size label
*/
ve.ce.ResizableNode.prototype.updateSizeLabel = function () {
if ( !this.isResizable() ) {
return;
}
Iif ( !this.showSizeLabel && !this.canShowScaleLabel ) {
return;
}
const scalable = this.model.getScalable();
const dimensions = scalable.getCurrentDimensions();
const offset = this.getResizableOffset();
const minWidth = ( this.showSizeLabel ? 100 : 0 ) + ( this.showScaleLabel ? 30 : 0 );
let top, height;
// Put the label on the outside when too narrow
if ( dimensions.width < minWidth ) {
top = offset.top + dimensions.height;
height = 30;
} else E{
top = offset.top;
height = dimensions.height;
}
this.$sizeLabel
.removeClass( 'oo-ui-element-hidden' )
.addClass( 've-ce-resizableNode-sizeLabel-resizing' )
.css( {
top: top,
left: offset.left,
width: dimensions.width,
height: height,
lineHeight: height + 'px'
} );
this.$sizeText.empty();
Eif ( this.showSizeLabel ) {
this.$sizeText.append( $( '<span>' )
.addClass( 've-ce-resizableNode-sizeText-size' )
// TODO: i18n?
.text( Math.round( dimensions.width ) + ' × ' + Math.round( dimensions.height ) )
);
}
if ( this.canShowScaleLabel ) {
this.$sizeText.append( $( '<span>' )
.addClass( 've-ce-resizableNode-sizeText-scale' )
.text( Math.round( 100 * scalable.getCurrentScale() ) + '%' )
);
}
this.$sizeText.toggleClass( 've-ce-resizableNode-sizeText-warning', scalable.isTooSmall() || scalable.isTooLarge() );
};
/**
* Show specific resize handles
*
* @param {string[]} [handles] List of handles to show: 'nw', 'ne', 'sw', 'se'. Show all if undefined.
*/
ve.ce.ResizableNode.prototype.showHandles = function ( handles ) {
if ( !this.isResizable() ) {
return;
}
const add = [],
remove = [],
allDirections = [ 'nw', 'ne', 'sw', 'se' ];
for ( let i = 0, len = allDirections.length; i < len; i++ ) {
if ( handles === undefined || handles.indexOf( allDirections[ i ] ) !== -1 ) {
remove.push( 've-ce-resizableNode-hide-' + allDirections[ i ] );
} else {
add.push( 've-ce-resizableNode-hide-' + allDirections[ i ] );
}
}
// The following classes are used here:
// * ve-ce-resizableNode-hide-nw
// * ve-ce-resizableNode-hide-ne
// * ve-ce-resizableNode-hide-sw
// * ve-ce-resizableNode-hide-se
this.$resizeHandles
.addClass( add )
.removeClass( remove );
};
/**
* Handle node focus.
*/
ve.ce.ResizableNode.prototype.onResizableFocus = function () {
// Also check the node is focused as this method is also triggered by rerender.
Iif ( !this.isResizable() || !this.isFocused() ) {
return;
}
this.$resizeHandles.appendTo( this.resizableSurface.getSurface().$controls );
Eif ( this.$sizeLabel ) {
this.$sizeLabel.appendTo( this.resizableSurface.getSurface().$controls );
}
// Call getScalable to pre-fetch the extended data
this.model.getScalable();
this.setResizableHandlesSizeAndPosition();
this.$resizeHandles
.find( '.ve-ce-resizableNode-neHandle' )
.css( { marginRight: -this.$resizable.outerWidth() } );
this.$resizeHandles
.find( '.ve-ce-resizableNode-swHandle' )
.css( { marginBottom: -this.$resizable.outerHeight() } );
this.$resizeHandles
.find( '.ve-ce-resizableNode-seHandle' )
.css( {
marginRight: -this.$resizable.outerWidth(),
marginBottom: -this.$resizable.outerHeight()
} );
this.$resizeHandles.children()
.off( '.ve-ce-resizableNode' )
.on(
'mousedown.ve-ce-resizableNode',
this.onResizeHandlesCornerMouseDown.bind( this )
);
this.resizableSurface.connect( this, { position: 'setResizableHandlesSizeAndPosition' } );
};
/**
* Handle node blur.
*/
ve.ce.ResizableNode.prototype.onResizableBlur = function () {
// Node may have already been torn down, e.g. after delete
Iif ( !this.isResizableSetup || !this.root ) {
return;
}
this.$resizeHandles.detach();
Eif ( this.$sizeLabel ) {
this.$sizeLabel.detach();
}
this.resizableSurface.disconnect( this, { position: 'setResizableHandlesSizeAndPosition' } );
};
/**
* Respond to AlignableNodes changing their alignment by hiding useless resize handles.
*
* @param {string} align Alignment
*/
ve.ce.ResizableNode.prototype.onResizableAlign = function ( align ) {
Iif ( !this.isResizable() ) {
return;
}
this.showHandles( {
right: [ 'sw' ],
left: [ 'se' ],
center: [ 'sw', 'se' ]
// Defaults to undefined
}[ align ] );
};
/**
* Handle setup event.
*/
ve.ce.ResizableNode.prototype.onResizableSetup = function () {
// Exit if already setup or not attached
Iif ( this.isResizableSetup || !this.root ) {
return;
}
this.resizableSurface = this.root.getSurface();
this.isResizableSetup = true;
};
/**
* Handle teardown event.
*/
ve.ce.ResizableNode.prototype.onResizableTeardown = function () {
// Exit if not setup or not attached
Iif ( !this.isResizableSetup || !this.root ) {
return;
}
this.onResizableBlur();
this.resizableSurface = null;
this.isResizableSetup = false;
};
/**
* Handle resizing event.
*
* @param {Object} dimensions Dimension object containing width & height
*/
ve.ce.ResizableNode.prototype.onResizableResizing = function ( dimensions ) {
Iif ( !this.isResizable() ) {
return;
}
// Clear cached resizable offset position as it may have changed
this.resizableOffset = null;
this.model.getScalable().setCurrentDimensions( dimensions );
Eif ( !this.outline ) {
this.$resizable.css( this.model.getScalable().getCurrentDimensions() );
this.setResizableHandlesPosition();
}
this.updateSizeLabel();
};
/**
* Handle attribute change events from the model.
*
* @param {string} key Attribute key
* @param {string} from Old value
* @param {string} to New value
*/
ve.ce.ResizableNode.prototype.onResizableAttributeChange = function () {
Iif ( !this.isResizable() ) {
return;
}
this.$resizable.css( this.model.getCurrentDimensions() );
};
/**
* Handle bounding box handle mousedown.
*
* @param {jQuery.Event} e Click event
* @fires ve.ce.ResizableNode#resizeStart
*/
ve.ce.ResizableNode.prototype.onResizeHandlesCornerMouseDown = function ( e ) {
// Hide context menu
// TODO: Maybe there's a more generic way to handle this sort of thing? For relocation it's
// handled in ve.ce.Surface
this.root.getSurface().getSurface().getContext().toggle( false );
// Set bounding box width and undo the handle margins
this.$resizeHandles
.addClass( 've-ce-resizableNode-handles-resizing' )
.css( {
width: this.$resizable.outerWidth(),
height: this.$resizable.outerHeight()
} );
this.$resizeHandles.children().css( 'margin', 0 );
// Values to calculate adjusted bounding box size
this.resizeInfo = {
mouseX: e.screenX,
mouseY: e.screenY,
top: this.$resizeHandles.position().top,
left: this.$resizeHandles.position().left,
height: this.$resizeHandles.height(),
width: this.$resizeHandles.width(),
handle: $( e.target ).data( 'handle' )
};
// Bind resize events
this.resizing = true;
this.root.getSurface().resizing = true;
this.model.getScalable().setCurrentDimensions( {
width: this.resizeInfo.width,
height: this.resizeInfo.height
} );
this.updateSizeLabel();
$( this.getElementDocument() ).on( {
'mousemove.ve-ce-resizableNode': this.onDocumentMouseMove.bind( this ),
'mouseup.ve-ce-resizableNode': this.onDocumentMouseUp.bind( this )
} );
this.emit( 'resizeStart' );
e.preventDefault();
};
/**
* Set the proper size and position for resize handles
*/
ve.ce.ResizableNode.prototype.setResizableHandlesSizeAndPosition = function () {
Iif ( !this.isResizable() ) {
return;
}
const width = this.$resizable.outerWidth();
const height = this.$resizable.outerHeight();
// Clear cached resizable offset position as it may have changed
this.resizableOffset = null;
this.setResizableHandlesPosition();
this.$resizeHandles
.css( {
width: 0,
height: 0
} )
.find( '.ve-ce-resizableNode-neHandle' )
.css( { marginRight: -width } );
this.$resizeHandles
.find( '.ve-ce-resizableNode-swHandle' )
.css( { marginBottom: -height } );
this.$resizeHandles
.find( '.ve-ce-resizableNode-seHandle' )
.css( {
marginRight: -width,
marginBottom: -height
} );
};
/**
* Set the proper position for resize handles
*/
ve.ce.ResizableNode.prototype.setResizableHandlesPosition = function () {
Iif ( !this.isResizable() ) {
return;
}
const offset = this.getResizableOffset();
this.$resizeHandles.css( {
top: offset.top,
left: offset.left
} );
};
/**
* Handle body mousemove.
*
* @param {jQuery.Event} e Click event
* @fires ve.ce.ResizableNode#resizing
*/
ve.ce.ResizableNode.prototype.onDocumentMouseMove = function ( e ) {
const diff = {};
let dimensions = {
width: 0,
height: 0,
top: this.resizeInfo.top,
left: this.resizeInfo.left
};
Eif ( this.resizing ) {
// X and Y diff
switch ( this.resizeInfo.handle ) {
case 'se':
diff.x = e.screenX - this.resizeInfo.mouseX;
diff.y = e.screenY - this.resizeInfo.mouseY;
break;
case 'nw':
diff.x = this.resizeInfo.mouseX - e.screenX;
diff.y = this.resizeInfo.mouseY - e.screenY;
break;
case 'ne':
diff.x = e.screenX - this.resizeInfo.mouseX;
diff.y = this.resizeInfo.mouseY - e.screenY;
break;
case 'sw':
diff.x = this.resizeInfo.mouseX - e.screenX;
diff.y = e.screenY - this.resizeInfo.mouseY;
break;
}
dimensions = this.model.getScalable().getBoundedDimensions( {
width: this.resizeInfo.width + diff.x,
height: this.resizeInfo.height + diff.y
}, e.shiftKey && this.snapToGrid );
// Fix the position
switch ( this.resizeInfo.handle ) {
case 'ne':
dimensions.top = this.resizeInfo.top +
( this.resizeInfo.height - dimensions.height );
break;
case 'sw':
dimensions.left = this.resizeInfo.left +
( this.resizeInfo.width - dimensions.width );
break;
case 'nw':
dimensions.top = this.resizeInfo.top +
( this.resizeInfo.height - dimensions.height );
dimensions.left = this.resizeInfo.left +
( this.resizeInfo.width - dimensions.width );
break;
}
// Update bounding box
this.$resizeHandles.css( dimensions );
this.emit( 'resizing', {
width: dimensions.width,
height: dimensions.height
} );
}
};
/**
* Handle body mouseup.
*
* @fires ve.ce.ResizableNode#resizeEnd
*/
ve.ce.ResizableNode.prototype.onDocumentMouseUp = function () {
const width = this.$resizeHandles.outerWidth(),
height = this.$resizeHandles.outerHeight();
this.$resizeHandles.removeClass( 've-ce-resizableNode-handles-resizing' );
$( this.getElementDocument() ).off( '.ve-ce-resizableNode' );
this.resizing = false;
this.root.getSurface().resizing = false;
this.hideSizeLabel();
// Apply changes to the model
const attrChanges = this.getAttributeChanges( width, height );
Eif ( !ve.isEmptyObject( attrChanges ) ) {
this.resizableSurface.getModel().getFragment().changeAttributes( attrChanges );
}
// Update the context menu. This usually happens with the redraw, but not if the
// user doesn't perform a drag
this.root.getSurface().getSurface().getContext().updateDimensions();
this.emit( 'resizeEnd' );
};
/**
* Generate an object of attributes changes from the new width and height.
*
* @param {number} width New image width
* @param {number} height New image height
* @return {Object} Attribute changes
*/
ve.ce.ResizableNode.prototype.getAttributeChanges = function ( width, height ) {
const attrChanges = {},
currentDimensions = this.model.getCurrentDimensions();
Eif ( currentDimensions.width !== width ) {
attrChanges.width = width;
}
Eif ( currentDimensions.height !== height ) {
attrChanges.height = height;
}
return attrChanges;
};
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