TabPanel.js
/**
* @class Ext.TabPanel
* @extends Ext.util.Observable
* Creates a lightweight TabPanel component using Yahoo! UI.
* <br><br>
* Usage:
* <pre><code>
<font color="#008000">// basic tabs 1, built from existing content</font>
var tabs = new Ext.TabPanel("tabs1");
tabs.addTab("script", "View Script");
tabs.addTab("markup", "View Markup");
tabs.activate("script");
<font color="#008000">// more advanced tabs, built from javascript</font>
var jtabs = new Ext.TabPanel("jtabs");
jtabs.addTab("jtabs-1", "Normal Tab", "My content was added during construction.");
<font color="#008000">// set up the UpdateManager</font>
var tab2 = jtabs.addTab("jtabs-2", "Ajax Tab 1");
var updater = tab2.getUpdateManager();
updater.setDefaultUrl("ajax1.htm");
tab2.on('activate', updater.refresh, updater, true);
<font color="#008000">// Use setUrl for Ajax loading</font>
var tab3 = jtabs.addTab("jtabs-3", "Ajax Tab 2");
tab3.setUrl("ajax2.htm", null, true);
<font color="#008000">// Disabled tab</font>
var tab4 = jtabs.addTab("tabs1-5", "Disabled Tab", "Can"t see me cause I"m disabled");
tab4.disable();
jtabs.activate("jtabs-1");
}
* </code></pre>
* @constructor
* Create new TabPanel.
* @param {String/HTMLElement/Element} container The id, DOM element or Ext.Element container where this TabPanel is to be rendered.
* @param {Boolean} config Config object to set any properties for this TabPanel or true to render the tabs on the bottom.
*/
Ext.TabPanel = function(container, config){
/**
* The container element for this TabPanel.
* @type Ext.Element
*/
this.el = Ext.get(container, true);
if(config){
if(typeof config == "boolean"){
this.tabPosition = config ? "bottom" : "top";
}else{
Ext.apply(this, config);
}
}
if(this.tabPosition == "bottom"){
this.bodyEl = Ext.get(this.createBody(this.el.dom));
this.el.addClass("x-tabs-bottom");
}
this.stripWrap = Ext.get(this.createStrip(this.el.dom), true);
this.stripEl = Ext.get(this.createStripList(this.stripWrap.dom), true);
this.stripBody = Ext.get(this.stripWrap.dom.firstChild.firstChild, true);
if(Ext.isIE){
Ext.fly(this.stripWrap.dom.firstChild).setStyle("overflow-x", "hidden");
}
if(this.tabPosition != "bottom"){
/** The body element that contains TabPaneItem bodies.
* @type Ext.Element
*/
this.bodyEl = Ext.get(this.createBody(this.el.dom));
this.el.addClass("x-tabs-top");
}
this.items = [];
this.bodyEl.setStyle("position", "relative");
this.active = null;
this.activateDelegate = this.activate.createDelegate(this);
this.addEvents({
/**
* @event tabchange
* Fires when the active tab changes
* @param {Ext.TabPanel} this
* @param {Ext.TabPanelItem} activePanel The new active tab
*/
"tabchange": true,
/**
* @event beforetabchange
* Fires before the active tab changes, set cancel to true on the "e" parameter to cancel the change
* @param {Ext.TabPanel} this
* @param {Object} e Set cancel to true on this object to cancel the tab change
* @param {Ext.TabPanelItem} tab The tab being changed to
*/
"beforetabchange" : true
});
Ext.EventManager.onWindowResize(this.onResize, this);
this.cpad = this.el.getPadding("lr");
this.hiddenCount = 0;
Ext.TabPanel.superclass.constructor.call(this);
};
Ext.extend(Ext.TabPanel, Ext.util.Observable, {
/** The position of the tabs. Can be "top" or "bottom" @type String */
tabPosition : "top",
currentTabWidth : 0,
/** The minimum width of a tab (ignored if resizeTabs is not true). @type Number */
minTabWidth : 40,
/** The maximum width of a tab (ignored if resizeTabs is not true). @type Number */
maxTabWidth : 250,
/** The preferred (default) width of a tab (ignored if resizeTabs is not true). @type Number */
preferredTabWidth : 175,
/** Set this to true to enable dynamic tab resizing. @type Boolean */
resizeTabs : false,
/** Set this to true to turn on window resizing monitoring (ignored if resizeTabs is not true). @type Boolean */
monitorResize : true,
/**
* Creates a new TabPanelItem by looking for an existing element with the provided id - if it's not found it creates one.
* @param {String} id The id of the div to use <b>or create</b>
* @param {String} text The text for the tab
* @param {String} content （可选） Content to put in the TabPanelItem body
* @param {Boolean} closable （可选） True to create a close icon on the tab
* @return {Ext.TabPanelItem} The created TabPanelItem
*/
addTab : function(id, text, content, closable){
var item = new Ext.TabPanelItem(this, id, text, closable);
this.addTabItem(item);
if(content){
item.setContent(content);
}
return item;
},
/**
* Returns the TabPanelItem with the specified id/index
* @param {String/Number} id The id or index of the TabPanelItem to fetch.
* @return {Ext.TabPanelItem}
*/
getTab : function(id){
return this.items[id];
},
/**
* Hides the TabPanelItem with the specified id/index
* @param {String/Number} id The id or index of the TabPanelItem to hide.
*/
hideTab : function(id){
var t = this.items[id];
if(!t.isHidden()){
t.setHidden(true);
this.hiddenCount++;
this.autoSizeTabs();
}
},
/**
* "Unhides" the TabPanelItem with the specified id/index
* @param {String/Number} id The id or index of the TabPanelItem to unhide.
*/
unhideTab : function(id){
var t = this.items[id];
if(t.isHidden()){
t.setHidden(false);
this.hiddenCount--;
this.autoSizeTabs();
}
},
/**
* Add an existing TabPanelItem.
* @param {Ext.TabPanelItem} item The TabPanelItem to add
*/
addTabItem : function(item){
this.items[item.id] = item;
this.items.push(item);
if(this.resizeTabs){
item.setWidth(this.currentTabWidth || this.preferredTabWidth);
this.autoSizeTabs();
}else{
item.autoSize();
}
},
/**
* Remove a TabPanelItem.
* @param {String/Number} id The id or index of the TabPanelItem to remove.
*/
removeTab : function(id){
var items = this.items;
var tab = items[id];
if(!tab) return;
var index = items.indexOf(tab);
if(this.active == tab && items.length > 1){
var newTab = this.getNextAvailable(index);
if(newTab)newTab.activate();
}
this.stripEl.dom.removeChild(tab.pnode.dom);
if(tab.bodyEl.dom.parentNode == this.bodyEl.dom){ // if it was moved already prevent error
this.bodyEl.dom.removeChild(tab.bodyEl.dom);
}
items.splice(index, 1);
delete this.items[tab.id];
tab.fireEvent("close", tab);
tab.purgeListeners();
this.autoSizeTabs();
},
getNextAvailable : function(start){
var items = this.items;
var index = start;
// look for a next tab that will slide over to
// replace the one being removed
while(index < items.length){
var item = items[++index];
if(item && !item.isHidden()){
return item;
}
}
// if one isn't found select the previous tab (on the left)
index = start;
while(index >= 0){
var item = items[--index];
if(item && !item.isHidden()){
return item;
}
}
return null;
},
/**
* Disable a TabPanelItem. <b>It cannot be the active tab, if it is this call is ignored.</b>.
* @param {String/Number} id The id or index of the TabPanelItem to disable.
*/
disableTab : function(id){
var tab = this.items[id];
if(tab && this.active != tab){
tab.disable();
}
},
/**
* Enable a TabPanelItem that is disabled.
* @param {String/Number} id The id or index of the TabPanelItem to enable.
*/
enableTab : function(id){
var tab = this.items[id];
tab.enable();
},
/**
* Activate a TabPanelItem. The currently active will be deactivated.
* @param {String/Number} id The id or index of the TabPanelItem to activate.
*/
activate : function(id){
var tab = this.items[id];
if(!tab){
return null;
}
if(tab == this.active){
return tab;
}
var e = {};
this.fireEvent("beforetabchange", this, e, tab);
if(e.cancel !== true && !tab.disabled){
if(this.active){
this.active.hide();
}
this.active = this.items[id];
this.active.show();
this.fireEvent("tabchange", this, this.active);
}
return tab;
},
/**
* Get the active TabPanelItem
* @return {Ext.TabPanelItem} The active TabPanelItem or null if none are active.
*/
getActiveTab : function(){
return this.active;
},
/**
* Updates the tab body element to fit the height of the container element
* for overflow scrolling
* @param {Number} targetHeight （可选） Override the starting height from the elements height
*/
syncHeight : function(targetHeight){
var height = (targetHeight || this.el.getHeight())-this.el.getBorderWidth("tb")-this.el.getPadding("tb");
var bm = this.bodyEl.getMargins();
var newHeight = height-(this.stripWrap.getHeight()||0)-(bm.top+bm.bottom);
this.bodyEl.setHeight(newHeight);
return newHeight;
},
onResize : function(){
if(this.monitorResize){
this.autoSizeTabs();
}
},
/**
* Disables tab resizing while tabs are being added (if resizeTabs is false this does nothing)
*/
beginUpdate : function(){
this.updating = true;
},
/**
* Stops an update and resizes the tabs (if resizeTabs is false this does nothing)
*/
endUpdate : function(){
this.updating = false;
this.autoSizeTabs();
},
/**
* Manual call to resize the tabs (if resizeTabs is false this does nothing)
*/
autoSizeTabs : function(){
var count = this.items.length;
var vcount = count - this.hiddenCount;
if(!this.resizeTabs || count < 1 || vcount < 1 || this.updating) return;
var w = Math.max(this.el.getWidth() - this.cpad, 10);
var availWidth = Math.floor(w / vcount);
var b = this.stripBody;
if(b.getWidth() > w){
var tabs = this.items;
this.setTabWidth(Math.max(availWidth, this.minTabWidth)-2);
if(availWidth < this.minTabWidth){
/*if(!this.sleft){ // incomplete scrolling code
this.createScrollButtons();
}
this.showScroll();
this.stripClip.setWidth(w - (this.sleft.getWidth()+this.sright.getWidth()));*/
}
}else{
if(this.currentTabWidth < this.preferredTabWidth){
this.setTabWidth(Math.min(availWidth, this.preferredTabWidth)-2);
}
}
},
/**
* Returns the number of tabs
* @return {Number}
*/
getCount : function(){
return this.items.length;
},
/**
* Resizes all the tabs to the passed width
* @param {Number} The new width
*/
setTabWidth : function(width){
this.currentTabWidth = width;
for(var i = 0, len = this.items.length; i < len; i++) {
if(!this.items[i].isHidden())this.items[i].setWidth(width);
}
},
/**
* Destroys this TabPanel
* @param {Boolean} removeEl （可选） True to remove the element from the DOM as well
*/
destroy : function(removeEl){
Ext.EventManager.removeResizeListener(this.onResize, this);
for(var i = 0, len = this.items.length; i < len; i++){
this.items[i].purgeListeners();
}
if(removeEl === true){
this.el.update("");
this.el.remove();
}
}
});
/**
* @class Ext.TabPanelItem
* @extends Ext.util.Observable
*/
Ext.TabPanelItem = function(tabPanel, id, text, closable){
/**
* The TabPanel this TabPanelItem belongs to
* @type Ext.TabPanel
*/
this.tabPanel = tabPanel;
/**
* The id for this TabPanelItem
* @type String
*/
this.id = id;
/** @private */
this.disabled = false;
/** @private */
this.text = text;
/** @private */
this.loaded = false;
this.closable = closable;
/**
* The body element for this TabPanelItem
* @type Ext.Element
*/
this.bodyEl = Ext.get(tabPanel.createItemBody(tabPanel.bodyEl.dom, id));
this.bodyEl.setVisibilityMode(Ext.Element.VISIBILITY);
this.bodyEl.setStyle("display", "block");
this.bodyEl.setStyle("zoom", "1");
this.hideAction();
var els = tabPanel.createStripElements(tabPanel.stripEl.dom, text, closable);
/** @private */
this.el = Ext.get(els.el, true);
this.inner = Ext.get(els.inner, true);
this.textEl = Ext.get(this.el.dom.firstChild.firstChild.firstChild, true);
this.pnode = Ext.get(els.el.parentNode, true);
this.el.on("mousedown", this.onTabMouseDown, this);
this.el.on("click", this.onTabClick, this);
/** @private */
if(closable){
var c = Ext.get(els.close, true);
c.dom.title = this.closeText;
c.addClassOnOver("close-over");
c.on("click", this.closeClick, this);
}
this.addEvents({
/**
* @event activate
* Fires when this tab becomes the active tab
* @param {Ext.TabPanel} tabPanel
* @param {Ext.TabPanelItem} this
*/
"activate": true,
/**
* @event beforeclose
* Fires before this tab is closed. To cancal the close, set cancel to true on e. (e.cancel = true)
* @param {Ext.TabPanelItem} this
* @param {Object} e Set cancel to true on this object to cancel the close.
*/
"beforeclose": true,
/**
* @event close
* Fires when this tab is closed
* @param {Ext.TabPanelItem} this
*/
"close": true,
/**
* @event deactivate
* Fires when this tab is no longer the active tab
* @param {Ext.TabPanel} tabPanel
* @param {Ext.TabPanelItem} this
*/
"deactivate" : true
});
this.hidden = false;
Ext.TabPanelItem.superclass.constructor.call(this);
};
Ext.extend(Ext.TabPanelItem, Ext.util.Observable, {
purgeListeners : function(){
Ext.util.Observable.prototype.purgeListeners.call(this);
this.el.removeAllListeners();
},
/**
* Show this TabPanelItem - this <b>does not</b> deactivate the currently active TabPanelItem.
*/
show : function(){
this.pnode.addClass("on");
this.showAction();
if(Ext.isOpera){
this.tabPanel.stripWrap.repaint();
}
this.fireEvent("activate", this.tabPanel, this);
},
/**
* Returns true if this tab is the active tab
* @return {Boolean}
*/
isActive : function(){
return this.tabPanel.getActiveTab() == this;
},
/**
* Hide this TabPanelItem - if you don't activate another TabPanelItem this could look odd.
*/
hide : function(){
this.pnode.removeClass("on");
this.hideAction();
this.fireEvent("deactivate", this.tabPanel, this);
},
hideAction : function(){
this.bodyEl.hide();
this.bodyEl.setStyle("position", "absolute");
this.bodyEl.setLeft("-20000px");
this.bodyEl.setTop("-20000px");
},
showAction : function(){
this.bodyEl.setStyle("position", "relative");
this.bodyEl.setTop("");
this.bodyEl.setLeft("");
this.bodyEl.show();
},
/**
* Set the tooltip for the tab
* @param {String} tooltip
*/
setTooltip : function(text){
if(Ext.QuickTips && Ext.QuickTips.isEnabled()){
this.textEl.dom.qtip = text;
this.textEl.dom.removeAttribute('title');
}else{
this.textEl.dom.title = text;
}
},
onTabClick : function(e){
e.preventDefault();
this.tabPanel.activate(this.id);
},
onTabMouseDown : function(e){
e.preventDefault();
this.tabPanel.activate(this.id);
},
getWidth : function(){
return this.inner.getWidth();
},
setWidth : function(width){
var iwidth = width - this.pnode.getPadding("lr");
this.inner.setWidth(iwidth);
this.textEl.setWidth(iwidth-this.inner.getPadding("lr"));
this.pnode.setWidth(width);
},
setHidden : function(hidden){
this.hidden = hidden;
this.pnode.setStyle("display", hidden ? "none" : "");
},
/**
* Returns true if this tab is "hidden"
* @return {Boolean}
*/
isHidden : function(){
return this.hidden;
},
/**
* Returns the text for this tab
* @return {String}
*/
getText : function(){
return this.text;
},
autoSize : function(){
//this.el.beginMeasure();
this.textEl.setWidth(1);
this.setWidth(this.textEl.dom.scrollWidth+this.pnode.getPadding("lr")+this.inner.getPadding("lr"));
//this.el.endMeasure();
},
/**
* Sets the text for the tab (Note: this also sets the tooltip)
* @param {String} text
*/
setText : function(text){
this.text = text;
this.textEl.update(text);
this.setTooltip(text);
if(!this.tabPanel.resizeTabs){
this.autoSize();
}
},
/**
* Activate this TabPanelItem - this <b>does</b> deactivate the currently active TabPanelItem.
*/
activate : function(){
this.tabPanel.activate(this.id);
},
/**
* Disable this TabPanelItem - this call is ignore if this is the active TabPanelItem.
*/
disable : function(){
if(this.tabPanel.active != this){
this.disabled = true;
this.pnode.addClass("disabled");
}
},
/**
* Enable this TabPanelItem if it was previously disabled.
*/
enable : function(){
this.disabled = false;
this.pnode.removeClass("disabled");
},
/**
* Set the content for this TabPanelItem.
* @param {String} content The content
* @param {Boolean} loadScripts true to look for and load scripts
*/
setContent : function(content, loadScripts){
this.bodyEl.update(content, loadScripts);
},
/**
* Get the {@link Ext.UpdateManager} for the body of this TabPanelItem. Enables you to perform Ajax updates.
* @return {Ext.UpdateManager} The UpdateManager
*/
getUpdateManager : function(){
return this.bodyEl.getUpdateManager();
},
/**
* Set a URL to be used to load the content for this TabPanelItem.
* @param {String/Function} url The url to load the content from or a function to call to get the url
* @param {String/Object} params （可选） The string params for the update call or an object of the params. See {@link Ext.UpdateManager#update} for more details. (Defaults to null)
* @param {Boolean} loadOnce （可选） Whether to only load the content once. If this is false it makes the Ajax call every time this TabPanelItem is activated. (Defaults to false)
* @return {Ext.UpdateManager} The UpdateManager
*/
setUrl : function(url, params, loadOnce){
if(this.refreshDelegate){
this.un('activate', this.refreshDelegate);
}
this.refreshDelegate = this._handleRefresh.createDelegate(this, [url, params, loadOnce]);
this.on("activate", this.refreshDelegate);
return this.bodyEl.getUpdateManager();
},
/** @private */
_handleRefresh : function(url, params, loadOnce){
if(!loadOnce || !this.loaded){
var updater = this.bodyEl.getUpdateManager();
updater.update(url, params, this._setLoaded.createDelegate(this));
}
},
/**
* Force a content refresh from the URL specified in the setUrl() method.
* Will fail silently if the setUrl method has not been called.
* This does not activate the panel, just updates its content.
*/
refresh : function(){
if(this.refreshDelegate){
this.loaded = false;
this.refreshDelegate();
}
},
/** @private */
_setLoaded : function(){
this.loaded = true;
},
/** @private */
closeClick : function(e){
var o = {};
e.stopEvent();
this.fireEvent("beforeclose", this, o);
if(o.cancel !== true){
this.tabPanel.removeTab(this.id);
}
},
/**
* The text displayed in the tooltip for the close icon.
* @type String
*/
closeText : "Close this tab"
});
/** @private */
Ext.TabPanel.prototype.createStrip = function(container){
var strip = document.createElement("div");
strip.className = "x-tabs-wrap";
container.appendChild(strip);
return strip;
};
/** @private */
Ext.TabPanel.prototype.createStripList = function(strip){
// div wrapper for retard IE
strip.innerHTML = '<div class="x-tabs-strip-wrap"><table class="x-tabs-strip" cellspacing="0" cellpadding="0" border="0"><tbody><tr></tr></tbody></table></div>';
return strip.firstChild.firstChild.firstChild.firstChild;
};
/** @private */
Ext.TabPanel.prototype.createBody = function(container){
var body = document.createElement("div");
Ext.id(body, "tab-body");
Ext.fly(body).addClass("x-tabs-body");
container.appendChild(body);
return body;
};
/** @private */
Ext.TabPanel.prototype.createItemBody = function(bodyEl, id){
var body = Ext.getDom(id);
if(!body){
body = document.createElement("div");
body.id = id;
}
Ext.fly(body).addClass("x-tabs-item-body");
bodyEl.insertBefore(body, bodyEl.firstChild);
return body;
};
/** @private */
Ext.TabPanel.prototype.createStripElements = function(stripEl, text, closable){
var td = document.createElement("td");
stripEl.appendChild(td);
if(closable){
td.className = "x-tabs-closable";
if(!this.closeTpl){
this.closeTpl = new Ext.Template(
'<a href="#" class="x-tabs-right"><span class="x-tabs-left"><em class="x-tabs-inner">' +
'<span unselectable="on"' + (this.disableTooltips ? '' : ' title="{text}"') +' class="x-tabs-text">{text}</span>' +
'<div unselectable="on" class="close-icon"> </div></em></span></a>'
);
}
var el = this.closeTpl.overwrite(td, {"text": text});
var close = el.getElementsByTagName("div")[0];
var inner = el.getElementsByTagName("em")[0];
return {"el": el, "close": close, "inner": inner};
} else {
if(!this.tabTpl){
this.tabTpl = new Ext.Template(
'<a href="#" class="x-tabs-right"><span class="x-tabs-left"><em class="x-tabs-inner">' +
'<span unselectable="on"' + (this.disableTooltips ? '' : ' title="{text}"') +' class="x-tabs-text">{text}</span></em></span></a>'
);
}
var el = this.tabTpl.overwrite(td, {"text": text});
var inner = el.getElementsByTagName("em")[0];
return {"el": el, "inner": inner};
}
};
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