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/Button.js
/*
* Ext JS Library 2.0.2
* Copyright(c) 2006-2008, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
/**
* @class Ext.Button
* @extends Ext.Component
* Simple Button class
* @cfg {String} text The button text
* @cfg {String} icon The path to an image to display in the button (the image will be set as the background-image
* CSS property of the button by default, so if you want a mixed icon/text button, set cls:"x-btn-text-icon")
* @cfg {Function} handler A function called when the button is clicked (can be used instead of click event)
* @cfg {Object} scope The scope of the handler
* @cfg {Number} minWidth The minimum width for this button (used to give a set of buttons a common width)
* @cfg {String/Object} tooltip The tooltip for the button - can be a string or QuickTips config object
* @cfg {Boolean} hidden True to start hidden (defaults to false)
* @cfg {Boolean} disabled True to start disabled (defaults to false)
* @cfg {Boolean} pressed True to start pressed (only if enableToggle = true)
* @cfg {String} toggleGroup The group this toggle button is a member of (only 1 per group can be pressed, only
* applies if enableToggle = true)
* @cfg {Boolean/Object} repeat True to repeat fire the click event while the mouse is down. This can also be
an {@link Ext.util.ClickRepeater} config object (defaults to false).
* @constructor
* Create a new button
* @param {Object} config The config object
*/
Ext.Button = Ext.extend(Ext.Component, {
/**
* Read-only. True if this button is hidden
* @type Boolean
*/
hidden : false,
/**
* Read-only. True if this button is disabled
* @type Boolean
*/
disabled : false,
/**
* Read-only. True if this button is pressed (only if enableToggle = true)
* @type Boolean
*/
pressed : false,
/**
* The Button's owner {@link Ext.Panel} (defaults to undefined, and is set automatically when
* the Button is added to a container). Read-only.
* @type Ext.Panel
* @property ownerCt
*/
/**
* @cfg {Number} tabIndex Set a DOM tabIndex for this button (defaults to undefined)
*/
/**
* @cfg {Boolean} enableToggle
* True to enable pressed/not pressed toggling (defaults to false)
*/
enableToggle: false,
/**
* @cfg {Mixed} menu
* Standard menu attribute consisting of a reference to a menu object, a menu id or a menu config blob (defaults to undefined).
*/
/**
* @cfg {String} menuAlign
* The position to align the menu to (see {@link Ext.Element#alignTo} for more details, defaults to 'tl-bl?').
*/
menuAlign : "tl-bl?",
/**
* @cfg {String} iconCls
* A css class which sets a background image to be used as the icon for this button
*/
/**
* @cfg {String} type
* submit, reset or button - defaults to 'button'
*/
type : 'button',
// private
menuClassTarget: 'tr',
/**
* @cfg {String} clickEvent
* The type of event to map to the button's event handler (defaults to 'click')
*/
clickEvent : 'click',
/**
* @cfg {Boolean} handleMouseEvents
* False to disable visual cues on mouseover, mouseout and mousedown (defaults to true)
*/
handleMouseEvents : true,
/**
* @cfg {String} tooltipType
* The type of tooltip to use. Either "qtip" (default) for QuickTips or "title" for title attribute.
*/
tooltipType : 'qtip',
buttonSelector : "button:first",
/**
* @cfg {String} cls
* A CSS class string to apply to the button's main element.
*/
/**
* @cfg {Ext.Template} template (Optional)
* An {@link Ext.Template} with which to create the Button's main element. This Template must
* contain numeric substitution parameter 0 if it is to display the text property. Changing the template could
* require code modifications if required elements (e.g. a button) aren't present.
*/
initComponent : function(){
Ext.Button.superclass.initComponent.call(this);
this.addEvents(
/**
* @event click
* Fires when this button is clicked
* @param {Button} this
* @param {EventObject} e The click event
*/
"click",
/**
* @event toggle
* Fires when the "pressed" state of this button changes (only if enableToggle = true)
* @param {Button} this
* @param {Boolean} pressed
*/
"toggle",
/**
* @event mouseover
* Fires when the mouse hovers over the button
* @param {Button} this
* @param {Event} e The event object
*/
'mouseover',
/**
* @event mouseout
* Fires when the mouse exits the button
* @param {Button} this
* @param {Event} e The event object
*/
'mouseout',
/**
* @event menushow
* If this button has a menu, this event fires when it is shown
* @param {Button} this
* @param {Menu} menu
*/
'menushow',
/**
* @event menuhide
* If this button has a menu, this event fires when it is hidden
* @param {Button} this
* @param {Menu} menu
*/
'menuhide',
/**
* @event menutriggerover
* If this button has a menu, this event fires when the mouse enters the menu triggering element
* @param {Button} this
* @param {Menu} menu
* @param {EventObject} e
*/
'menutriggerover',
/**
* @event menutriggerout
* If this button has a menu, this event fires when the mouse leaves the menu triggering element
* @param {Button} this
* @param {Menu} menu
* @param {EventObject} e
*/
'menutriggerout'
);
if(this.menu){
this.menu = Ext.menu.MenuMgr.get(this.menu);
}
if(typeof this.toggleGroup === 'string'){
this.enableToggle = true;
}
},
// private
onRender : function(ct, position){
if(!this.template){
if(!Ext.Button.buttonTemplate){
// hideous table template
Ext.Button.buttonTemplate = new Ext.Template(
'<table border="0" cellpadding="0" cellspacing="0" class="x-btn-wrap"><tbody><tr>',
'<td class="x-btn-left"><i> </i></td><td class="x-btn-center"><em unselectable="on"><button class="x-btn-text" type="{1}">{0}</button></em></td><td class="x-btn-right"><i> </i></td>',
"</tr></tbody></table>");
}
this.template = Ext.Button.buttonTemplate;
}
var btn, targs = [this.text || ' ', this.type];
if(position){
btn = this.template.insertBefore(position, targs, true);
}else{
btn = this.template.append(ct, targs, true);
}
var btnEl = btn.child(this.buttonSelector);
btnEl.on('focus', this.onFocus, this);
btnEl.on('blur', this.onBlur, this);
this.initButtonEl(btn, btnEl);
if(this.menu){
this.el.child(this.menuClassTarget).addClass("x-btn-with-menu");
}
Ext.ButtonToggleMgr.register(this);
},
// private
initButtonEl : function(btn, btnEl){
this.el = btn;
btn.addClass("x-btn");
if(this.icon){
btnEl.setStyle('background-image', 'url(' +this.icon +')');
}
if(this.iconCls){
btnEl.addClass(this.iconCls);
if(!this.cls){
btn.addClass(this.text ? 'x-btn-text-icon' : 'x-btn-icon');
}
}
if(this.tabIndex !== undefined){
btnEl.dom.tabIndex = this.tabIndex;
}
if(this.tooltip){
if(typeof this.tooltip == 'object'){
Ext.QuickTips.register(Ext.apply({
target: btnEl.id
}, this.tooltip));
} else {
btnEl.dom[this.tooltipType] = this.tooltip;
}
}
if(this.pressed){
this.el.addClass("x-btn-pressed");
}
if(this.handleMouseEvents){
btn.on("mouseover", this.onMouseOver, this);
// new functionality for monitoring on the document level
//btn.on("mouseout", this.onMouseOut, this);
btn.on("mousedown", this.onMouseDown, this);
}
if(this.menu){
this.menu.on("show", this.onMenuShow, this);
this.menu.on("hide", this.onMenuHide, this);
}
if(this.id){
this.el.dom.id = this.el.id = this.id;
}
if(this.repeat){
var repeater = new Ext.util.ClickRepeater(btn,
typeof this.repeat == "object" ? this.repeat : {}
);
repeater.on("click", this.onClick, this);
}
btn.on(this.clickEvent, this.onClick, this);
},
// private
afterRender : function(){
Ext.Button.superclass.afterRender.call(this);
if(Ext.isIE6){
this.autoWidth.defer(1, this);
}else{
this.autoWidth();
}
},
/**
* Sets the CSS class that provides a background image to use as the button's icon. This method also changes
* the value of the {@link iconCls} config internally.
* @param {String} cls The CSS class providing the icon image
*/
setIconClass : function(cls){
if(this.el){
this.el.child(this.buttonSelector).replaceClass(this.iconCls, cls);
}
this.iconCls = cls;
},
// private
beforeDestroy: function(){
if(this.rendered){
var btn = this.el.child(this.buttonSelector);
if(btn){
btn.removeAllListeners();
}
}
if(this.menu){
Ext.destroy(this.menu);
}
},
// private
onDestroy : function(){
if(this.rendered){
Ext.ButtonToggleMgr.unregister(this);
}
},
// private
autoWidth : function(){
if(this.el){
this.el.setWidth("auto");
if(Ext.isIE7 && Ext.isStrict){
var ib = this.el.child(this.buttonSelector);
if(ib && ib.getWidth() > 20){
ib.clip();
ib.setWidth(Ext.util.TextMetrics.measure(ib, this.text).width+ib.getFrameWidth('lr'));
}
}
if(this.minWidth){
if(this.el.getWidth() < this.minWidth){
this.el.setWidth(this.minWidth);
}
}
}
},
/**
* Assigns this button's click handler
* @param {Function} handler The function to call when the button is clicked
* @param {Object} scope (optional) Scope for the function passed in
*/
setHandler : function(handler, scope){
this.handler = handler;
this.scope = scope;
},
/**
* Sets this button's text
* @param {String} text The button text
*/
setText : function(text){
this.text = text;
if(this.el){
this.el.child("td.x-btn-center " + this.buttonSelector).update(text);
}
this.autoWidth();
},
/**
* Gets the text for this button
* @return {String} The button text
*/
getText : function(){
return this.text;
},
/**
* If a state it passed, it becomes the pressed state otherwise the current state is toggled.
* @param {Boolean} state (optional) Force a particular state
*/
toggle : function(state){
state = state === undefined ? !this.pressed : state;
if(state != this.pressed){
if(state){
this.el.addClass("x-btn-pressed");
this.pressed = true;
this.fireEvent("toggle", this, true);
}else{
this.el.removeClass("x-btn-pressed");
this.pressed = false;
this.fireEvent("toggle", this, false);
}
if(this.toggleHandler){
this.toggleHandler.call(this.scope || this, this, state);
}
}
},
/**
* Focus the button
*/
focus : function(){
this.el.child(this.buttonSelector).focus();
},
// private
onDisable : function(){
if(this.el){
if(!Ext.isIE6 || !this.text){
this.el.addClass(this.disabledClass);
}
this.el.dom.disabled = true;
}
this.disabled = true;
},
// private
onEnable : function(){
if(this.el){
if(!Ext.isIE6 || !this.text){
this.el.removeClass(this.disabledClass);
}
this.el.dom.disabled = false;
}
this.disabled = false;
},
/**
* Show this button's menu (if it has one)
*/
showMenu : function(){
if(this.menu){
this.menu.show(this.el, this.menuAlign);
}
return this;
},
/**
* Hide this button's menu (if it has one)
*/
hideMenu : function(){
if(this.menu){
this.menu.hide();
}
return this;
},
/**
* Returns true if the button has a menu and it is visible
* @return {Boolean}
*/
hasVisibleMenu : function(){
return this.menu && this.menu.isVisible();
},
// private
onClick : function(e){
if(e){
e.preventDefault();
}
if(e.button != 0){
return;
}
if(!this.disabled){
if(this.enableToggle && (this.allowDepress !== false || !this.pressed)){
this.toggle();
}
if(this.menu && !this.menu.isVisible() && !this.ignoreNextClick){
this.showMenu();
}
this.fireEvent("click", this, e);
if(this.handler){
//this.el.removeClass("x-btn-over");
this.handler.call(this.scope || this, this, e);
}
}
},
// private
isMenuTriggerOver : function(e, internal){
return this.menu && !internal;
},
// private
isMenuTriggerOut : function(e, internal){
return this.menu && !internal;
},
// private
onMouseOver : function(e){
if(!this.disabled){
var internal = e.within(this.el, true);
if(!internal){
this.el.addClass("x-btn-over");
Ext.getDoc().on('mouseover', this.monitorMouseOver, this);
this.fireEvent('mouseover', this, e);
}
if(this.isMenuTriggerOver(e, internal)){
this.fireEvent('menutriggerover', this, this.menu, e);
}
}
},
// private
monitorMouseOver : function(e){
if(e.target != this.el.dom && !e.within(this.el)){
Ext.getDoc().un('mouseover', this.monitorMouseOver, this);
this.onMouseOut(e);
}
},
// private
onMouseOut : function(e){
var internal = e.within(this.el) && e.target != this.el.dom;
this.el.removeClass("x-btn-over");
this.fireEvent('mouseout', this, e);
if(this.isMenuTriggerOut(e, internal)){
this.fireEvent('menutriggerout', this, this.menu, e);
}
},
// private
onFocus : function(e){
if(!this.disabled){
this.el.addClass("x-btn-focus");
}
},
// private
onBlur : function(e){
this.el.removeClass("x-btn-focus");
},
// private
getClickEl : function(e, isUp){
return this.el;
},
// private
onMouseDown : function(e){
if(!this.disabled && e.button == 0){
this.getClickEl(e).addClass("x-btn-click");
Ext.getDoc().on('mouseup', this.onMouseUp, this);
}
},
// private
onMouseUp : function(e){
if(e.button == 0){
this.getClickEl(e, true).removeClass("x-btn-click");
Ext.getDoc().un('mouseup', this.onMouseUp, this);
}
},
// private
onMenuShow : function(e){
this.ignoreNextClick = 0;
this.el.addClass("x-btn-menu-active");
this.fireEvent('menushow', this, this.menu);
},
// private
onMenuHide : function(e){
this.el.removeClass("x-btn-menu-active");
this.ignoreNextClick = this.restoreClick.defer(250, this);
this.fireEvent('menuhide', this, this.menu);
},
// private
restoreClick : function(){
this.ignoreNextClick = 0;
}
/**
* @cfg {String} autoEl @hide
*/
});
Ext.reg('button', Ext.Button);
// Private utility class used by Button
Ext.ButtonToggleMgr = function(){
var groups = {};
function toggleGroup(btn, state){
if(state){
var g = groups[btn.toggleGroup];
for(var i = 0, l = g.length; i < l; i++){
if(g[i] != btn){
g[i].toggle(false);
}
}
}
}
return {
register : function(btn){
if(!btn.toggleGroup){
return;
}
var g = groups[btn.toggleGroup];
if(!g){
g = groups[btn.toggleGroup] = [];
}
g.push(btn);
btn.on("toggle", toggleGroup);
},
unregister : function(btn){
if(!btn.toggleGroup){
return;
}
var g = groups[btn.toggleGroup];
if(g){
g.remove(btn);
btn.un("toggle", toggleGroup);
}
}
};
}();