mediawiki-extensions-Visual.../modules/ve/ui/tools/ve.ui.DropdownTool.js
Trevor Parscal 5e50f6de2c Added disable/enable methods to ve.Surface
Change-Id: I65a93c590ace58b666adcb792bc825174a3f95c6
2012-12-11 16:28:39 -08:00

154 lines
3.8 KiB
JavaScript

/**
* VisualEditor user interface DropdownTool class.
*
* @copyright 2011-2012 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/**
* Creates an ve.ui.DropdownTool object.
*
* @abstract
* @class
* @constructor
* @extends {ve.ui.Tool}
* @param {ve.ui.Toolbar} toolbar
* @param {Object[]} items
*/
ve.ui.DropdownTool = function VeUiDropdownTool( toolbar, items ) {
// Parent constructor
ve.ui.Tool.call( this, toolbar );
// Properties
this.menuView = new ve.ui.Menu( items, ve.bind( this.onMenuItemSelect, this ), null, this.$ );
this.$icon = $( '<div class="ve-ui-dropdownTool-icon ve-ui-icon-down"></div>' );
this.$label = $( '<div class="ve-ui-dropdownTool-label"></div>' );
this.$labelText = $( '<span>&nbsp;</span>' );
// Events
$( document )
.add( this.toolbar.getSurface().getView().$ )
.mousedown( ve.bind( this.onBlur, this ) );
this.$.on( {
'mousedown': ve.bind( this.onMousedown, this ),
'mouseup': ve.bind( this.onMouseup, this )
} );
// Initialization
this.$
.append( this.$icon, this.$label )
.addClass( 've-ui-dropdownTool ve-ui-dropdownTool-' + this.constructor.static.name )
.attr( 'title', ve.msg( this.constructor.static.titleMessage ) );
this.$label.append( this.$labelText );
};
/* Inheritance */
ve.inheritClass( ve.ui.DropdownTool, ve.ui.Tool );
/* Methods */
/**
* Responds to the mouse button being pressed.
*
* @method
* @param {jQuery.Event} e Normalized event
*/
ve.ui.DropdownTool.prototype.onMousedown = function ( e ) {
if ( e.which === 1 ) {
e.preventDefault();
return false;
}
};
/**
* Responds to the mouse button being released.
*
* @method
* @param {jQuery.Event} e Normalized event
*/
ve.ui.DropdownTool.prototype.onMouseup = function ( e ) {
if ( e.which === 1 ) {
// Don't respond to menu clicks
var $item = $( e.target ).closest( '.ve-ui-menu' );
if ( e.which === 1 && $item.length === 0 ) {
this.menuView.open();
} else {
this.menuView.close();
}
}
};
/**
* Responds to focus being lost.
*
* The event is actually generated from a mousedown on an element outside the menu, so it is not
* a normal blur event object.
*
* @method
* @param {jQuery.Event} e Normalized event
*/
ve.ui.DropdownTool.prototype.onBlur = function ( e ) {
if ( e.which === 1 ) {
this.menuView.close();
}
};
/**
* Responds to one of the items in the menu being selected.
*
* This should not be overridden in subclasses, it simple connects events from the internal menu
* to the onSelect method.
*
* @method
* @param {Object} item Menu item
*/
ve.ui.DropdownTool.prototype.onMenuItemSelect = function ( item ) {
if ( this.toolbar.getSurface().isEnabled() ) {
this.setLabel( item.label );
this.onSelect( item );
}
};
/**
* Responds to dropdown option being selected.
*
* This is an abstract method that must be overridden in a concrete subclass.
*
* @abstract
* @method
* @param {Object} item Menu item
*/
ve.ui.DropdownTool.prototype.onSelect = function () {
throw new Error(
've.ui.DropdownTool.onSelect not implemented in this subclass:' + this.constructor
);
};
/**
* Responds to toolbar state being cleared.
*
* @method
*/
ve.ui.DropdownTool.prototype.onClearState = function () {
this.setLabel();
};
/**
* Sets the label.
*
* If the label value is empty, undefined or only contains whitespace an empty label will be used.
*
* @method
* @param {jQuery|String} [value] jQuery HTML node selection or string text value to use for label
*/
ve.ui.DropdownTool.prototype.setLabel = function ( value ) {
if ( typeof value === 'string' && value.length && /[^\s]*/.test( value ) ) {
this.$labelText.text( value );
} else if ( value instanceof jQuery ) {
this.$labelText.empty().append( value );
} else {
this.$labelText.html( '&nbsp;' );
}
};