StatusBar.js
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上传日期:2018-01-28
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中间件编程
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JavaScript
- /*!
- * Ext JS Library 3.0.0
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
- /**
- * @class Ext.ux.StatusBar
- * <p>Basic status bar component that can be used as the bottom toolbar of any {@link Ext.Panel}. In addition to
- * supporting the standard {@link Ext.Toolbar} interface for adding buttons, menus and other items, the StatusBar
- * provides a greedy status element that can be aligned to either side and has convenient methods for setting the
- * status text and icon. You can also indicate that something is processing using the {@link #showBusy} method.</p>
- * <p><b>Note:</b> Although StatusBar supports xtype:'statusbar', at this time Ext.Toolbar (the base class) does
- * not support xtype. For this reason, if you are adding Toolbar items into the StatusBar you must declare it
- * using the "new StatusBar()" syntax for the items to render correctly.</p>
- * <pre><code>
- new Ext.Panel({
- title: 'StatusBar',
- // etc.
- bbar: new Ext.ux.StatusBar({
- id: 'my-status',
- // defaults to use when the status is cleared:
- defaultText: 'Default status text',
- defaultIconCls: 'default-icon',
- // values to set initially:
- text: 'Ready',
- iconCls: 'ready-icon',
- // any standard Toolbar items:
- items: [{
- text: 'A Button'
- }, '-', 'Plain Text']
- })
- });
- // Update the status bar later in code:
- var sb = Ext.getCmp('my-status');
- sb.setStatus({
- text: 'OK',
- iconCls: 'ok-icon',
- clear: true // auto-clear after a set interval
- });
- // Set the status bar to show that something is processing:
- sb.showBusy();
- // processing....
- sb.clearStatus(); // once completeed
- </code></pre>
- * @extends Ext.Toolbar
- * @constructor
- * Creates a new StatusBar
- * @param {Object/Array} config A config object
- */
- Ext.ux.StatusBar = Ext.extend(Ext.Toolbar, {
- /**
- * @cfg {String} statusAlign
- * The alignment of the status element within the overall StatusBar layout. When the StatusBar is rendered,
- * it creates an internal div containing the status text and icon. Any additional Toolbar items added in the
- * StatusBar's {@link #items} config, or added via {@link #add} or any of the supported add* methods, will be
- * rendered, in added order, to the opposite side. The status element is greedy, so it will automatically
- * expand to take up all sapce left over by any other items. Example usage:
- * <pre><code>
- // Create a left-aligned status bar containing a button,
- // separator and text item that will be right-aligned (default):
- new Ext.Panel({
- title: 'StatusBar',
- // etc.
- bbar: new Ext.ux.StatusBar({
- defaultText: 'Default status text',
- id: 'status-id',
- items: [{
- text: 'A Button'
- }, '-', 'Plain Text']
- })
- });
- // By adding the statusAlign config, this will create the
- // exact same toolbar, except the status and toolbar item
- // layout will be reversed from the previous example:
- new Ext.Panel({
- title: 'StatusBar',
- // etc.
- bbar: new Ext.ux.StatusBar({
- defaultText: 'Default status text',
- id: 'status-id',
- statusAlign: 'right',
- items: [{
- text: 'A Button'
- }, '-', 'Plain Text']
- })
- });
- </code></pre>
- */
- /**
- * @cfg {String} defaultText
- * The default {@link #text} value. This will be used anytime the status bar is cleared with the
- * <tt>useDefaults:true</tt> option (defaults to '').
- */
- /**
- * @cfg {String} defaultIconCls
- * The default {@link #iconCls} value (see the iconCls docs for additional details about customizing the icon).
- * This will be used anytime the status bar is cleared with the <tt>useDefaults:true</tt> option (defaults to '').
- */
- /**
- * @cfg {String} text
- * A string that will be rendered into the status element as the status message (defaults to '');
- */
- /**
- * @cfg {String} iconCls
- * A CSS class that will be applied to the status element and is expected to provide a background image that will
- * serve as the status bar icon (defaults to ''). The class is applied directly to the div that also contains the
- * status text, so the rule should provide the appropriate padding on the div to make room for the image.
- * Example usage:<pre><code>
- // Example CSS rule:
- .x-statusbar .x-status-custom {
- padding-left: 25px;
- background: transparent url(images/custom-icon.gif) no-repeat 3px 3px;
- }
- // Initializing the status bar:
- var sb = new Ext.ux.StatusBar({
- defaultIconCls: 'x-status-custom'
- });
- // Setting it in code:
- sb.setStatus({
- text: 'New status',
- iconCls: 'x-status-custom'
- });
- </code></pre>
- */
- /**
- * @cfg {String} cls
- * The base class applied to the containing element for this component on render (defaults to 'x-statusbar')
- */
- cls : 'x-statusbar',
- /**
- * @cfg {String} busyIconCls
- * The default {@link #iconCls} applied when calling {@link #showBusy} (defaults to 'x-status-busy'). It can be
- * overridden at any time by passing the <tt>iconCls</tt> argument into <tt>showBusy</tt>. See the
- * iconCls docs for additional details about customizing the icon.
- */
- busyIconCls : 'x-status-busy',
- /**
- * @cfg {String} busyText
- * The default {@link #text} applied when calling {@link #showBusy} (defaults to 'Loading...'). It can be
- * overridden at any time by passing the <tt>text</tt> argument into <tt>showBusy</tt>.
- */
- busyText : 'Loading...',
- /**
- * @cfg {Number} autoClear
- * The number of milliseconds to wait after setting the status via {@link #setStatus} before automatically
- * clearing the status text and icon (defaults to 5000). Note that this only applies when passing the
- * <tt>clear</tt> argument to setStatus since that is the only way to defer clearing the status. This can
- * be overridden by specifying a different <tt>wait</tt> value in setStatus. Calls to {@link #clearStatus}
- * always clear the status bar immediately and ignore this value.
- */
- autoClear : 5000,
- // private
- activeThreadId : 0,
- // private
- initComponent : function(){
- if(this.statusAlign=='right'){
- this.cls += ' x-status-right';
- }
- Ext.ux.StatusBar.superclass.initComponent.call(this);
- },
- // private
- afterRender : function(){
- Ext.ux.StatusBar.superclass.afterRender.call(this);
- var right = this.statusAlign == 'right';
- this.statusEl = new Ext.Toolbar.TextItem({
- cls: 'x-status-text ' + (this.iconCls || this.defaultIconCls || ''),
- text: this.text || this.defaultText || ''
- });
- if(right){
- this.add('->');
- this.add(this.statusEl);
- }else{
- this.insert(0, this.statusEl);
- this.insert(1, '->');
- }
- // this.statusEl = td.createChild({
- // cls: 'x-status-text ' + (this.iconCls || this.defaultIconCls || ''),
- // html: this.text || this.defaultText || ''
- // });
- // this.statusEl.unselectable();
- // this.spacerEl = td.insertSibling({
- // tag: 'td',
- // style: 'width:100%',
- // cn: [{cls:'ytb-spacer'}]
- // }, right ? 'before' : 'after');
- },
- /**
- * Sets the status {@link #text} and/or {@link #iconCls}. Also supports automatically clearing the
- * status that was set after a specified interval.
- * @param {Object/String} config A config object specifying what status to set, or a string assumed
- * to be the status text (and all other options are defaulted as explained below). A config
- * object containing any or all of the following properties can be passed:<ul>
- * <li><tt>text</tt> {String} : (optional) The status text to display. If not specified, any current
- * status text will remain unchanged.</li>
- * <li><tt>iconCls</tt> {String} : (optional) The CSS class used to customize the status icon (see
- * {@link #iconCls} for details). If not specified, any current iconCls will remain unchanged.</li>
- * <li><tt>clear</tt> {Boolean/Number/Object} : (optional) Allows you to set an internal callback that will
- * automatically clear the status text and iconCls after a specified amount of time has passed. If clear is not
- * specified, the new status will not be auto-cleared and will stay until updated again or cleared using
- * {@link #clearStatus}. If <tt>true</tt> is passed, the status will be cleared using {@link #autoClear},
- * {@link #defaultText} and {@link #defaultIconCls} via a fade out animation. If a numeric value is passed,
- * it will be used as the callback interval (in milliseconds), overriding the {@link #autoClear} value.
- * All other options will be defaulted as with the boolean option. To customize any other options,
- * you can pass an object in the format:<ul>
- * <li><tt>wait</tt> {Number} : (optional) The number of milliseconds to wait before clearing
- * (defaults to {@link #autoClear}).</li>
- * <li><tt>anim</tt> {Number} : (optional) False to clear the status immediately once the callback
- * executes (defaults to true which fades the status out).</li>
- * <li><tt>useDefaults</tt> {Number} : (optional) False to completely clear the status text and iconCls
- * (defaults to true which uses {@link #defaultText} and {@link #defaultIconCls}).</li>
- * </ul></li></ul>
- * Example usage:<pre><code>
- // Simple call to update the text
- statusBar.setStatus('New status');
- // Set the status and icon, auto-clearing with default options:
- statusBar.setStatus({
- text: 'New status',
- iconCls: 'x-status-custom',
- clear: true
- });
- // Auto-clear with custom options:
- statusBar.setStatus({
- text: 'New status',
- iconCls: 'x-status-custom',
- clear: {
- wait: 8000,
- anim: false,
- useDefaults: false
- }
- });
- </code></pre>
- * @return {Ext.ux.StatusBar} this
- */
- setStatus : function(o){
- o = o || {};
- if(typeof o == 'string'){
- o = {text:o};
- }
- if(o.text !== undefined){
- this.setText(o.text);
- }
- if(o.iconCls !== undefined){
- this.setIcon(o.iconCls);
- }
- if(o.clear){
- var c = o.clear,
- wait = this.autoClear,
- defaults = {useDefaults: true, anim: true};
- if(typeof c == 'object'){
- c = Ext.applyIf(c, defaults);
- if(c.wait){
- wait = c.wait;
- }
- }else if(typeof c == 'number'){
- wait = c;
- c = defaults;
- }else if(typeof c == 'boolean'){
- c = defaults;
- }
- c.threadId = this.activeThreadId;
- this.clearStatus.defer(wait, this, [c]);
- }
- return this;
- },
- /**
- * Clears the status {@link #text} and {@link #iconCls}. Also supports clearing via an optional fade out animation.
- * @param {Object} config (optional) A config object containing any or all of the following properties. If this
- * object is not specified the status will be cleared using the defaults below:<ul>
- * <li><tt>anim</tt> {Boolean} : (optional) True to clear the status by fading out the status element (defaults
- * to false which clears immediately).</li>
- * <li><tt>useDefaults</tt> {Boolean} : (optional) True to reset the text and icon using {@link #defaultText} and
- * {@link #defaultIconCls} (defaults to false which sets the text to '' and removes any existing icon class).</li>
- * </ul>
- * @return {Ext.ux.StatusBar} this
- */
- clearStatus : function(o){
- o = o || {};
- if(o.threadId && o.threadId !== this.activeThreadId){
- // this means the current call was made internally, but a newer
- // thread has set a message since this call was deferred. Since
- // we don't want to overwrite a newer message just ignore.
- return this;
- }
- var text = o.useDefaults ? this.defaultText : '',
- iconCls = o.useDefaults ? (this.defaultIconCls ? this.defaultIconCls : '') : '';
- if(o.anim){
- this.statusEl.fadeOut({
- remove: false,
- useDisplay: true,
- scope: this,
- callback: function(){
- this.setStatus({
- text: text,
- iconCls: iconCls
- });
- this.statusEl.show();
- }
- });
- }else{
- // hide/show the el to avoid jumpy text or icon
- this.statusEl.hide();
- this.setStatus({
- text: text,
- iconCls: iconCls
- });
- this.statusEl.show();
- }
- return this;
- },
- /**
- * Convenience method for setting the status text directly. For more flexible options see {@link #setStatus}.
- * @param {String} text (optional) The text to set (defaults to '')
- * @return {Ext.ux.StatusBar} this
- */
- setText : function(text){
- this.activeThreadId++;
- this.text = text || '';
- if(this.rendered){
- this.statusEl.setText(this.text);
- }
- return this;
- },
- /**
- * Returns the current status text.
- * @return {String} The status text
- */
- getText : function(){
- return this.text;
- },
- /**
- * Convenience method for setting the status icon directly. For more flexible options see {@link #setStatus}.
- * See {@link #iconCls} for complete details about customizing the icon.
- * @param {String} iconCls (optional) The icon class to set (defaults to '', and any current icon class is removed)
- * @return {Ext.ux.StatusBar} this
- */
- setIcon : function(cls){
- this.activeThreadId++;
- cls = cls || '';
- if(this.rendered){
- if(this.currIconCls){
- this.statusEl.removeClass(this.currIconCls);
- this.currIconCls = null;
- }
- if(cls.length > 0){
- this.statusEl.addClass(cls);
- this.currIconCls = cls;
- }
- }else{
- this.currIconCls = cls;
- }
- return this;
- },
- /**
- * Convenience method for setting the status text and icon to special values that are pre-configured to indicate
- * a "busy" state, usually for loading or processing activities.
- * @param {Object/String} config (optional) A config object in the same format supported by {@link #setStatus}, or a
- * string to use as the status text (in which case all other options for setStatus will be defaulted). Use the
- * <tt>text</tt> and/or <tt>iconCls</tt> properties on the config to override the default {@link #busyText}
- * and {@link #busyIconCls} settings. If the config argument is not specified, {@link #busyText} and
- * {@link #busyIconCls} will be used in conjunction with all of the default options for {@link #setStatus}.
- * @return {Ext.ux.StatusBar} this
- */
- showBusy : function(o){
- if(typeof o == 'string'){
- o = {text:o};
- }
- o = Ext.applyIf(o || {}, {
- text: this.busyText,
- iconCls: this.busyIconCls
- });
- return this.setStatus(o);
- }
- });
- Ext.reg('statusbar', Ext.ux.StatusBar);