www.gusucode.com > 一个基于extjs的强大聊天插件源码程序 > 一个基于extjs的强大聊天插件/extjame/ext-jame/js/ext2/source/widgets/Window.js
/*
* Ext JS Library 2.0.2
* Copyright(c) 2006-2008, Ext JS, LLC.
* licensing@extjs.com
*
* 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.WindowManager} 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 {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 {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
* 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).
*/
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
* 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',
// 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,
// The following configs are set to provide the basic functionality of a window.
// Changing them would require additional code to handle correctly and should
// usually only be done in subclasses that can provide custom behavior. Changing them
// may have unexpected or undesirable results.
/** @cfg {String} elements @hide */
elements: 'header,body',
/** @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: " "});
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();
}
},
// 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(){
this.dd = new Ext.Window.DD(this);
},
// private
onEsc : function(){
this[this.closeAction]();
},
// private
beforeDestroy : function(){
Ext.destroy(
this.resizer,
this.dd,
this.proxy,
this.mask
);
Ext.Window.superclass.beforeDestroy.call(this);
},
// private
onDestroy : function(){
if(this.manager){
this.manager.unregister(this);
}
Ext.Window.superclass.onDestroy.call(this);
},
// private
initTools : function(){
if(this.minimizable){
this.addTool({
id: 'minimize',
handler: this.minimize.createDelegate(this, [])
});
}
if(this.maximizable){
this.addTool({
id: 'maximize',
handler: this.maximize.createDelegate(this, [])
});
this.addTool({
id: 'restore',
handler: this.restore.createDelegate(this, []),
hidden:true
});
this.header.on('dblclick', this.toggleMaximize, this);
}
if(this.closable){
this.addTool({
id: 'close',
handler: this[this.closeAction].createDelegate(this, [])
});
}
},
// private
resizerAction : function(){
var box = this.proxy.getBox();
this.proxy.hide();
this.window.handleResize(box);
return box;
},
// private
beforeResize : function(){
this.resizer.minHeight = Math.max(this.minHeight, this.getFrameHeight() + 40); // 40 is a magic minimum content size?
this.resizer.minWidth = Math.max(this.minWidth, this.getFrameWidth() + 40);
this.resizeBox = this.el.getBox();
},
// private
updateHandles : function(){
if(Ext.isIE && this.resizer){
this.resizer.syncHandleHeight();
this.el.repaint();
}
},
// private
handleResize : function(box){
var rz = this.resizeBox;
if(rz.x != box.x || rz.y != box.y){
this.updateBox(box);
}else{
this.setSize(box);
}
this.focus();
this.updateHandles();
this.saveState();
this.fireEvent("resize", this, box.width, box.height);
},
/**
* Focuses the window. If a defaultButton is set, it will receive focus, otherwise the
* window itself will receive focus.
*/
focus : function(){
var f = this.focusEl, db = this.defaultButton, t = typeof db;
if(t != 'undefined'){
if(t == 'number'){
f = this.buttons[db];
}else if(t == 'string'){
f = Ext.getCmp(db);
}else{
f = db;
}
}
f.focus.defer(10, f);
},
/**
* Sets the target element from which the window should animate while opening.
* @param {String/Element} el The target element or id
*/
setAnimateTarget : function(el){
el = Ext.get(el);
this.animateTarget = el;
},
// private
beforeShow : function(){
delete this.el.lastXY;
delete this.el.lastLT;
if(this.x === undefined || this.y === undefined){
var xy = this.el.getAlignToXY(this.container, 'c-c');
var pos = this.el.translatePoints(xy[0], xy[1]);
this.x = this.x === undefined? pos.left : this.x;
this.y = this.y === undefined? pos.top : this.y;
}
this.el.setLeftTop(this.x, this.y);
if(this.expandOnShow){
this.expand(false);
}
if(this.modal){
Ext.getBody().addClass("x-body-masked");
this.mask.setSize(Ext.lib.Dom.getViewWidth(true), Ext.lib.Dom.getViewHeight(true));
this.mask.show();
}
},
/**
* Shows the window, rendering it first if necessary, or activates it and brings it to front if hidden.
* @param {String/Element} animateTarget (optional) The target element or id from which the window should
* animate while opening (defaults to null with no animation)
* @param {Function} callback (optional) A callback function to call after the window is displayed
* @param {Object} scope (optional) The scope in which to execute the callback
*/
show : function(animateTarget, cb, scope){
if(!this.rendered){
this.render(Ext.getBody());
}
if(this.hidden === false){
this.toFront();
return;
}
if(this.fireEvent("beforeshow", this) === false){
return;
}
if(cb){
this.on('show', cb, scope, {single:true});
}
this.hidden = false;
if(animateTarget !== undefined){
this.setAnimateTarget(animateTarget);
}
this.beforeShow();
if(this.animateTarget){
this.animShow();
}else{
this.afterShow();
}
},
// private
afterShow : function(){
this.proxy.hide();
this.el.setStyle('display', 'block');
this.el.show();
if(this.maximized){
this.fitContainer();
}
if(Ext.isMac && Ext.isGecko){ // work around stupid FF 2.0/Mac scroll bar bug
this.cascade(this.setAutoScroll);
}
if(this.monitorResize || this.modal || this.constrain || this.constrainHeader){
Ext.EventManager.onWindowResize(this.onWindowResize, this);
}
this.doConstrain();
if(this.layout){
this.doLayout();
}
if(this.keyMap){
this.keyMap.enable();
}
this.toFront();
this.updateHandles();
this.fireEvent("show", this);
},
// private
animShow : function(){
this.proxy.show();
this.proxy.setBox(this.animateTarget.getBox());
this.proxy.setOpacity(0);
var b = this.getBox(false);
b.callback = this.afterShow;
b.scope = this;
b.duration = .25;
b.easing = 'easeNone';
b.opacity = .5;
b.block = true;
this.el.setStyle('display', 'none');
this.proxy.shift(b);
},
/**
* Hides the window, setting it to invisible and applying negative offsets.
* @param {String/Element} animateTarget (optional) The target element or id to which the window should
* animate while hiding (defaults to null with no animation)
* @param {Function} callback (optional) A callback function to call after the window is hidden
* @param {Object} scope (optional) The scope in which to execute the callback
*/
hide : function(animateTarget, cb, scope){
if(this.hidden || this.fireEvent("beforehide", this) === false){
return;
}
if(cb){
this.on('hide', cb, scope, {single:true});
}
this.hidden = true;
if(animateTarget !== undefined){
this.setAnimateTarget(animateTarget);
}
if(this.animateTarget){
this.animHide();
}else{
this.el.hide();
this.afterHide();
}
},
// private
afterHide : function(){
this.proxy.hide();
if(this.monitorResize || this.modal || this.constrain || this.constrainHeader){
Ext.EventManager.removeResizeListener(this.onWindowResize, this);
}
if(this.modal){
this.mask.hide();
Ext.getBody().removeClass("x-body-masked");
}
if(this.keyMap){
this.keyMap.disable();
}
this.fireEvent("hide", this);
},
// private
animHide : function(){
this.proxy.setOpacity(.5);
this.proxy.show();
var tb = this.getBox(false);
this.proxy.setBox(tb);
this.el.hide();
var b = this.animateTarget.getBox();
b.callback = this.afterHide;
b.scope = this;
b.duration = .25;
b.easing = 'easeNone';
b.block = true;
b.opacity = 0;
this.proxy.shift(b);
},
// private
onWindowResize : function(){
if(this.maximized){
this.fitContainer();
}
if(this.modal){
this.mask.setSize('100%', '100%');
var force = this.mask.dom.offsetHeight;
this.mask.setSize(Ext.lib.Dom.getViewWidth(true), Ext.lib.Dom.getViewHeight(true));
}
this.doConstrain();
},
// private
doConstrain : function(){
if(this.constrain || this.constrainHeader){
var offsets;
if(this.constrain){
offsets = {
right:this.el.shadowOffset,
left:this.el.shadowOffset,
bottom:this.el.shadowOffset
};
}else {
var s = this.getSize();
offsets = {
right:-(s.width - 100),
bottom:-(s.height - 25)
};
}
var xy = this.el.getConstrainToXY(this.container, true, offsets);
if(xy){
this.setPosition(xy[0], xy[1]);
}
}
},
// private - used for dragging
ghost : function(cls){
var ghost = this.createGhost(cls);
var box = this.getBox(true);
ghost.setLeftTop(box.x, box.y);
ghost.setWidth(box.width);
this.el.hide();
this.activeGhost = ghost;
return ghost;
},
// private
unghost : function(show, matchPosition){
if(show !== false){
this.el.show();
this.focus();
if(Ext.isMac && Ext.isGecko){ // work around stupid FF 2.0/Mac scroll bar bug
this.cascade(this.setAutoScroll);
}
}
if(matchPosition !== false){
this.setPosition(this.activeGhost.getLeft(true), this.activeGhost.getTop(true));
}
this.activeGhost.hide();
this.activeGhost.remove();
delete this.activeGhost;
},
/**
* Placeholder method for minimizing the window. By default, this method simply fires the minimize event
* since the behavior of minimizing a window is application-specific. To implement custom minimize behavior,
* either the minimize event can be handled or this method can be overridden.
*/
minimize : function(){
this.fireEvent('minimize', this);
},
/**
* Closes the window, removes it from the DOM and destroys the window object. The beforeclose event is fired
* before the close happens and will cancel the close action if it returns false.
*/
close : function(){
if(this.fireEvent("beforeclose", this) !== false){
this.hide(null, function(){
this.fireEvent('close', this);
this.destroy();
}, this);
}
},
/**
* Fits the window within its current container and automatically replaces the 'maximize' tool button with
* the 'restore' tool button.
*/
maximize : function(){
if(!this.maximized){
this.expand(false);
this.restoreSize = this.getSize();
this.restorePos = this.getPosition(true);
this.tools.maximize.hide();
this.tools.restore.show();
this.maximized = true;
this.el.disableShadow();
if(this.dd){
this.dd.lock();
}
if(this.collapsible){
this.tools.toggle.hide();
}
this.el.addClass('x-window-maximized');
this.container.addClass('x-window-maximized-ct');
this.setPosition(0, 0);
this.fitContainer();
this.fireEvent('maximize', this);
}
},
/**
* Restores a maximized window back to its original size and position prior to being maximized and also replaces
* the 'restore' tool button with the 'maximize' tool button.
*/
restore : function(){
if(this.maximized){
this.el.removeClass('x-window-maximized');
this.tools.restore.hide();
this.tools.maximize.show();
this.setPosition(this.restorePos[0], this.restorePos[1]);
this.setSize(this.restoreSize.width, this.restoreSize.height);
delete this.restorePos;
delete this.restoreSize;
this.maximized = false;
this.el.enableShadow(true);
if(this.dd){
this.dd.unlock();
}
if(this.collapsible){
this.tools.toggle.show();
}
this.container.removeClass('x-window-maximized-ct');
this.doConstrain();
this.fireEvent('restore', this);
}
},
/**
* A shortcut method for toggling between {@link #maximize} and {@link #restore} based on the current maximized
* state of the window.
*/
toggleMaximize : function(){
this[this.maximized ? 'restore' : 'maximize']();
},
// private
fitContainer : function(){
var vs = this.container.getViewSize();
this.setSize(vs.width, vs.height);
},
// private
// z-index is managed by the WindowManager and may be overwritten at any time
setZIndex : function(index){
if(this.modal){
this.mask.setStyle("z-index", index);
}
this.el.setZIndex(++index);
index += 5;
if(this.resizer){
this.resizer.proxy.setStyle("z-index", ++index);
}
this.lastZIndex = index;
},
/**
* Aligns the window to the specified element
* @param {Mixed} element The element to align to.
* @param {String} position The position to align to (see {@link Ext.Element#alignTo} for more details).
* @param {Array} offsets (optional) Offset the positioning by [x, y]
* @return {Ext.Window} this
*/
alignTo : function(element, position, offsets){
var xy = this.el.getAlignToXY(element, position, offsets);
this.setPagePosition(xy[0], xy[1]);
return this;
},
/**
* Anchors this window to another element and realigns it when the window is resized or scrolled.
* @param {Mixed} element The element to align to.
* @param {String} position The position to align to (see {@link Ext.Element#alignTo} for more details)
* @param {Array} offsets (optional) Offset the positioning by [x, y]
* @param {Boolean/Number} monitorScroll (optional) true to monitor body scroll and reposition. If this parameter
* is a number, it is used as the buffer delay (defaults to 50ms).
* @return {Ext.Window} this
*/
anchorTo : function(el, alignment, offsets, monitorScroll, _pname){
var action = function(){
this.alignTo(el, alignment, offsets);
};
Ext.EventManager.onWindowResize(action, this);
var tm = typeof monitorScroll;
if(tm != 'undefined'){
Ext.EventManager.on(window, 'scroll', action, this,
{buffer: tm == 'number' ? monitorScroll : 50});
}
action.call(this);
this[_pname] = action;
return this;
},
/**
* Brings this window to the front of any other visible windows
* @return {Ext.Window} this
*/
toFront : function(){
if(this.manager.bringToFront(this)){
this.focus();
}
return this;
},
/**
* Makes this the active window by showing its shadow, or deactivates it by hiding its shadow. This method also
* fires the activate or deactivate event depending on which action occurred.
* @param {Boolean} active True to activate the window, false to deactivate it (defaults to false)
*/
setActive : function(active){
if(active){
if(!this.maximized){
this.el.enableShadow(true);
}
this.fireEvent('activate', this);
}else{
this.el.disableShadow();
this.fireEvent('deactivate', this);
}
},
/**
* Sends this window to the back of (lower z-index than) any other visible windows
* @return {Ext.Window} this
*/
toBack : function(){
this.manager.sendToBack(this);
return this;
},
/**
* Centers this window in the viewport
* @return {Ext.Window} this
*/
center : function(){
var xy = this.el.getAlignToXY(this.container, 'c-c');
this.setPagePosition(xy[0], xy[1]);
return this;
}
});
Ext.reg('window', Ext.Window);
// private - custom Window DD implementation
Ext.Window.DD = function(win){
this.win = win;
Ext.Window.DD.superclass.constructor.call(this, win.el.id, 'WindowDD-'+win.id);
this.setHandleElId(win.header.id);
this.scroll = false;
};
Ext.extend(Ext.Window.DD, Ext.dd.DD, {
moveOnly:true,
headerOffsets:[100, 25],
startDrag : function(){
var w = this.win;
this.proxy = w.ghost();
if(w.constrain !== false){
var so = w.el.shadowOffset;
this.constrainTo(w.container, {right: so, left: so, bottom: so});
}else if(w.constrainHeader !== false){
var s = this.proxy.getSize();
this.constrainTo(w.container, {right: -(s.width-this.headerOffsets[0]), bottom: -(s.height-this.headerOffsets[1])});
}
},
b4Drag : Ext.emptyFn,
onDrag : function(e){
this.alignElWithMouse(this.proxy, e.getPageX(), e.getPageY());
},
endDrag : function(e){
this.win.unghost();
this.win.saveState();
}
});