window.js

一个struts和extjs得源码

/*
 * Ext JS Library 2.2.1
 * Copyright(c) 2006-2009, Ext JS, LLC.
 * [e-mail]
 * 
 * http://extjs.com/license
 */

/**
 * @class Ext.Window
 * @extends Ext.Panel
 * A specialized panel intended for use as an application window.  Windows are floated and draggable by default, and
 * also provide specific behavior like the ability to maximize and restore (with an event for minimizing, since the
 * minimize behavior is application-specific).  Windows can also be linked to a {@link Ext.WindowGroup} or managed
 * by the {@link Ext.WindowMgr} to provide grouping, activation, to front/back and other application-specific behavior.
 * @constructor
 * @param {Object} config The config object
 */
Ext.Window = Ext.extend(Ext.Panel, {
    /**
     * @cfg {Number} x
     * The X position of the left edge of the Window on initial showing. Defaults to centering the Window within
     * the width of the Window's container {@link Ext.Element Element) (The Element that the Window is rendered to).
     */
    /**
     * @cfg {Number} y
     * The Y position of the top edge of the Window on initial showing. Defaults to centering the Window within
     * the height of the Window's container {@link Ext.Element Element) (The Element that the Window is rendered to).
     */
    /**
     * @cfg {Boolean} modal
     * True to make the window modal and mask everything behind it when displayed, false to display it without
     * restricting access to other UI elements (defaults to false).
     */
    /**
     * @cfg {String/Element} animateTarget
     * Id or element from which the window should animate while opening (defaults to null with no animation).
     */
    /**
     * @cfg {String} resizeHandles
     * A valid {@link Ext.Resizable} handles config string (defaults to 'all').  Only applies when resizable = true.
     */
    /**
     * @cfg {Ext.WindowGroup} manager
     * A reference to the WindowGroup that should manage this window (defaults to {@link Ext.WindowMgr}).
     */
    /**
    * @cfg {String/Number/Button} defaultButton
    * The id / index of a button or a button instance to focus when this window received the focus.
    */
    /**
    * @cfg {Function} onEsc
    * Allows override of the built-in processing for the escape key. Default action
    * is to close the Window (performing whatever action is specified in {@link #closeAction}.
    * To prevent the Window closing when the escape key is pressed, specify this as
    * Ext.emptyFn (See {@link Ext#emptyFn}).
    */
    /**
     * @cfg {Boolean} collapsed
     * True to render the window collapsed, false to render it expanded (defaults to false). Note that if 
     * {@link #expandOnShow} is true (the default) it will override the <tt>collapsed</tt> config and the window 
     * will always be expanded when shown.
     */
    /**
     * @cfg {Boolean} maximized
     * True to initially display the window in a maximized state. (Defaults to false).
     */
    
    /**
    * @cfg {String} baseCls
    * The base CSS class to apply to this panel's element (defaults to 'x-window').
    */
    baseCls : 'x-window',
    /**
     * @cfg {Boolean} resizable
     * True to allow user resizing at each edge and corner of the window, false to disable resizing (defaults to true).
     */
    resizable:true,
    /**
     * @cfg {Boolean} draggable
     * True to allow the window to be dragged by the header bar, false to disable dragging (defaults to true).  Note
     * that by default the window will be centered in the viewport, so if dragging is disabled the window may need
     * to be positioned programmatically after render (e.g., myWindow.setPosition(100, 100);).
     */
    draggable:true,
    /**
     * @cfg {Boolean} closable
     * <p>True to display the 'close' tool button and allow the user to close the window, false to
     * hide the button and disallow closing the window (default to true).</p>
     * <p>By default, when close is requested by either clicking the close button in the header
     * or pressing ESC when the Window has focus, the {@link #close} method will be called. This
     * will <i>destroy</i> the Window and its content meaning that it may not be reused.</p>
     * <p>To make closing a Window <i>hide</i> the Window so that it may be reused, set
     * {@link #closeAction} to 'hide'.
     */
    closable : true,
    /**
     * @cfg {Boolean} constrain
     * True to constrain the window to the viewport, false to allow it to fall outside of the viewport
     * (defaults to false).  Optionally the header only can be constrained using {@link #constrainHeader}.
     */
    constrain:false,
    /**
     * @cfg {Boolean} constrainHeader
     * True to constrain the window header to the viewport, allowing the window body to fall outside of the viewport,
     * false to allow the header to fall outside the viewport (defaults to false).  Optionally the entire window
     * can be constrained using {@link #constrain}.
     */
    constrainHeader:false,
    /**
     * @cfg {Boolean} plain
     * True to render the window body with a transparent background so that it will blend into the framing
     * elements, false to add a lighter background color to visually highlight the body element and separate it
     * more distinctly from the surrounding frame (defaults to false).
     */
    plain:false,
    /**
     * @cfg {Boolean} minimizable
     * True to display the 'minimize' tool button and allow the user to minimize the window, false to hide the button
     * and disallow minimizing the window (defaults to false).  Note that this button provides no implementation --
     * the behavior of minimizing a window is implementation-specific, so the minimize event must be handled and a
     * custom minimize behavior implemented for this option to be useful.
     */
    minimizable : false,
    /**
     * @cfg {Boolean} maximizable
     * True to display the 'maximize' tool button and allow the user to maximize the window, false to hide the button
     * and disallow maximizing the window (defaults to false).  Note that when a window is maximized, the tool button
     * will automatically change to a 'restore' button with the appropriate behavior already built-in that will
     * restore the window to its previous size.
     */
    maximizable : false,
    /**
     * @cfg {Number} minHeight
     * The minimum height in pixels allowed for this window (defaults to 100).  Only applies when resizable = true.
     */
    minHeight: 100,
    /**
     * @cfg {Number} minWidth
     * The minimum width in pixels allowed for this window (defaults to 200).  Only applies when resizable = true.
     */
    minWidth: 200,
    /**
     * @cfg {Boolean} expandOnShow
     * True to always expand the window when it is displayed, false to keep it in its current state (which may be
     * {@link #collapsed}) when displayed (defaults to true).
     */
    expandOnShow: true,
    /**
     * @cfg {String} closeAction
     * The action to take when the close button is clicked.  The default action is 'close' which will actually remove
     * the window from the DOM and destroy it.  The other valid option is 'hide' which will simply hide the window
     * by setting visibility to hidden and applying negative offsets, keeping the window available to be redisplayed
     * via the {@link #show} method.
     */
    closeAction: 'close',
    /**
     * @cfg {String} elements
     * A comma-delimited list of panel elements to initialize when the window is rendered.  Normally, this list will be
     * generated automatically based on the items added to the window at config time, but sometimes it might be useful to
     * make sure a structural element is rendered even if not specified at config time (for example, you may want
     * to add a button or toolbar dynamically after the window has been rendered).  Adding those elements to this
     * list will allocate the required placeholders in the window when it is rendered.  Valid values are<ul>
     * <li><b>header</b> (required)</li>
     * <li><b>tbar</b> (top bar)</li>
     * <li><b>body</b> (required)</li>
     * <li><b>bbar</b> (bottom bar)</li>
     * <li><b>footer</b><li>
     * </ul>
     * Defaults to 'header,body'.
     */
    elements: 'header,body',

    // inherited docs, same default
    collapsible:false,

    // private
    initHidden : true,
    /**
    * @cfg {Boolean} monitorResize @hide
    * This is automatically managed based on the value of constrain and constrainToHeader
    */
    monitorResize : true,
    /** @cfg {Boolean} frame @hide */
    frame:true,
    /** @cfg {Boolean} floating @hide */
    floating:true,

    // private
    initComponent : function(){
        Ext.Window.superclass.initComponent.call(this);
        this.addEvents(
            /**
             * @event activate
             * Fires after the window has been visually activated via {@link setActive}.
             * @param {Ext.Window} this
             */
            /**
             * @event deactivate
             * Fires after the window has been visually deactivated via {@link setActive}.
             * @param {Ext.Window} this
             */
            /**
             * @event resize
             * Fires after the window has been resized.
             * @param {Ext.Window} this
             * @param {Number} width The window's new width
             * @param {Number} height The window's new height
             */
            'resize',
            /**
             * @event maximize
             * Fires after the window has been maximized.
             * @param {Ext.Window} this
             */
            'maximize',
            /**
             * @event minimize
             * Fires after the window has been minimized.
             * @param {Ext.Window} this
             */
            'minimize',
            /**
             * @event restore
             * Fires after the window has been restored to its original size after being maximized.
             * @param {Ext.Window} this
             */
            'restore'
        );
    },

    // private
    getState : function(){
        return Ext.apply(Ext.Window.superclass.getState.call(this) || {}, this.getBox());
    },

    // private
    onRender : function(ct, position){
        Ext.Window.superclass.onRender.call(this, ct, position);

        if(this.plain){
            this.el.addClass('x-window-plain');
        }

        // this element allows the Window to be focused for keyboard events
        this.focusEl = this.el.createChild({
                    tag: "a", href:"#", cls:"x-dlg-focus",
                    tabIndex:"-1", html: "&#160;"});
        this.focusEl.swallowEvent('click', true);

        this.proxy = this.el.createProxy("x-window-proxy");
        this.proxy.enableDisplayMode('block');

        if(this.modal){
            this.mask = this.container.createChild({cls:"ext-el-mask"}, this.el.dom);
            this.mask.enableDisplayMode("block");
            this.mask.hide();
            this.mask.on('click', this.focus, this);
        }
    },

    // private
    initEvents : function(){
        Ext.Window.superclass.initEvents.call(this);
        if(this.animateTarget){
            this.setAnimateTarget(this.animateTarget);
        }

        if(this.resizable){
            this.resizer = new Ext.Resizable(this.el, {
                minWidth: this.minWidth,
                minHeight:this.minHeight,
                handles: this.resizeHandles || "all",
                pinned: true,
                resizeElement : this.resizerAction
            });
            this.resizer.window = this;
            this.resizer.on("beforeresize", this.beforeResize, this);
        }

        if(this.draggable){
            this.header.addClass("x-window-draggable");
        }
        this.initTools();

        this.el.on("mousedown", this.toFront, this);
        this.manager = this.manager || Ext.WindowMgr;
        this.manager.register(this);
        this.hidden = true;
        if(this.maximized){
            this.maximized = false;
            this.maximize();
        }
        if(this.closable){
            var km = this.getKeyMap();
            km.on(27, this.onEsc, this);
            km.disable();
        }
    },

    initDraggable : function(){
        /**