3 * Copyright(c) 2006-2010 Sencha Inc.
5 * http://www.sencha.com/license
8 * @class Ext.ProgressBar
9 * @extends Ext.BoxComponent
10 * <p>An updateable progress bar component. The progress bar supports two different modes: manual and automatic.</p>
11 * <p>In manual mode, you are responsible for showing, updating (via {@link #updateProgress}) and clearing the
12 * progress bar as needed from your own code. This method is most appropriate when you want to show progress
13 * throughout an operation that has predictable points of interest at which you can update the control.</p>
14 * <p>In automatic mode, you simply call {@link #wait} and let the progress bar run indefinitely, only clearing it
15 * once the operation is complete. You can optionally have the progress bar wait for a specific amount of time
16 * and then clear itself. Automatic mode is most appropriate for timed operations or asynchronous operations in
17 * which you have no need for indicating intermediate progress.</p>
18 * @cfg {Float} value A floating point value between 0 and 1 (e.g., .5, defaults to 0)
19 * @cfg {String} text The progress bar text (defaults to '')
20 * @cfg {Mixed} textEl The element to render the progress text to (defaults to the progress
21 * bar's internal text element)
22 * @cfg {String} id The progress bar element's id (defaults to an auto-generated id)
25 Ext.ProgressBar = Ext.extend(Ext.BoxComponent, {
27 * @cfg {String} baseCls
28 * The base CSS class to apply to the progress bar's wrapper element (defaults to 'x-progress')
30 baseCls : 'x-progress',
33 * @cfg {Boolean} animate
34 * True to animate the progress bar during transitions (defaults to false)
42 initComponent : function(){
43 Ext.ProgressBar.superclass.initComponent.call(this);
47 * Fires after each update interval
48 * @param {Ext.ProgressBar} this
49 * @param {Number} The current progress value
50 * @param {String} The current progress text
57 onRender : function(ct, position){
58 var tpl = new Ext.Template(
59 '<div class="{cls}-wrap">',
60 '<div class="{cls}-inner">',
61 '<div class="{cls}-bar">',
62 '<div class="{cls}-text">',
66 '<div class="{cls}-text {cls}-text-back">',
73 this.el = position ? tpl.insertBefore(position, {cls: this.baseCls}, true)
74 : tpl.append(ct, {cls: this.baseCls}, true);
77 this.el.dom.id = this.id;
79 var inner = this.el.dom.firstChild;
80 this.progressBar = Ext.get(inner.firstChild);
83 //use an external text el
84 this.textEl = Ext.get(this.textEl);
85 delete this.textTopEl;
87 //setup our internal layered text els
88 this.textTopEl = Ext.get(this.progressBar.dom.firstChild);
89 var textBackEl = Ext.get(inner.childNodes[1]);
90 this.textTopEl.setStyle("z-index", 99).addClass('x-hidden');
91 this.textEl = new Ext.CompositeElement([this.textTopEl.dom.firstChild, textBackEl.dom.firstChild]);
92 this.textEl.setWidth(inner.offsetWidth);
94 this.progressBar.setHeight(inner.offsetHeight);
98 afterRender : function(){
99 Ext.ProgressBar.superclass.afterRender.call(this);
101 this.updateProgress(this.value, this.text);
103 this.updateText(this.text);
108 * Updates the progress bar value, and optionally its text. If the text argument is not specified,
109 * any existing text value will be unchanged. To blank out existing text, pass ''. Note that even
110 * if the progress bar value exceeds 1, it will never automatically reset -- you are responsible for
111 * determining when the progress is complete and calling {@link #reset} to clear and/or hide the control.
112 * @param {Float} value (optional) A floating point value between 0 and 1 (e.g., .5, defaults to 0)
113 * @param {String} text (optional) The string to display in the progress text element (defaults to '')
114 * @param {Boolean} animate (optional) Whether to animate the transition of the progress bar. If this value is
115 * not specified, the default for the class is used (default to false)
116 * @return {Ext.ProgressBar} this
118 updateProgress : function(value, text, animate){
119 this.value = value || 0;
121 this.updateText(text);
123 if(this.rendered && !this.isDestroyed){
124 var w = Math.floor(value*this.el.dom.firstChild.offsetWidth);
125 this.progressBar.setWidth(w, animate === true || (animate !== false && this.animate));
127 //textTopEl should be the same width as the bar so overflow will clip as the bar moves
128 this.textTopEl.removeClass('x-hidden').setWidth(w);
131 this.fireEvent('update', this, value, text);
136 * Initiates an auto-updating progress bar. A duration can be specified, in which case the progress
137 * bar will automatically reset after a fixed amount of time and optionally call a callback function
138 * if specified. If no duration is passed in, then the progress bar will run indefinitely and must
139 * be manually cleared by calling {@link #reset}. The wait method accepts a config object with
140 * the following properties:
142 Property Type Description
143 ---------- ------------ ----------------------------------------------------------------------
144 duration Number The length of time in milliseconds that the progress bar should
145 run before resetting itself (defaults to undefined, in which case it
146 will run indefinitely until reset is called)
147 interval Number The length of time in milliseconds between each progress update
148 (defaults to 1000 ms)
149 animate Boolean Whether to animate the transition of the progress bar. If this value is
150 not specified, the default for the class is used.
151 increment Number The number of progress update segments to display within the progress
152 bar (defaults to 10). If the bar reaches the end and is still
153 updating, it will automatically wrap back to the beginning.
154 text String Optional text to display in the progress bar element (defaults to '').
155 fn Function A callback function to execute after the progress bar finishes auto-
156 updating. The function will be called with no arguments. This function
157 will be ignored if duration is not specified since in that case the
158 progress bar can only be stopped programmatically, so any required function
159 should be called by the same code after it resets the progress bar.
160 scope Object The scope that is passed to the callback function (only applies when
161 duration and fn are both passed).
166 var p = new Ext.ProgressBar({
170 //Wait for 5 seconds, then update the status el (progress bar will auto-reset)
172 interval: 100, //bar will move fast!
178 Ext.fly('status').update('Done!');
182 //Or update indefinitely until some async action completes, then reset manually
184 myAction.on('complete', function(){
186 Ext.fly('status').update('Done!');
189 * @param {Object} config (optional) Configuration options
190 * @return {Ext.ProgressBar} this
196 this.updateText(o.text);
197 this.waitTimer = Ext.TaskMgr.start({
199 var inc = o.increment || 10;
201 this.updateProgress(((((i+inc)%inc)+1)*(100/inc))*0.01, null, o.animate);
203 interval: o.interval || 1000,
204 duration: o.duration,
207 o.fn.apply(o.scope || this);
218 * Returns true if the progress bar is currently in a {@link #wait} operation
219 * @return {Boolean} True if waiting, else false
221 isWaiting : function(){
222 return this.waitTimer !== null;
226 * Updates the progress bar text. If specified, textEl will be updated, otherwise the progress
227 * bar itself will display the updated text.
228 * @param {String} text (optional) The string to display in the progress text element (defaults to '')
229 * @return {Ext.ProgressBar} this
231 updateText : function(text){
232 this.text = text || ' ';
234 this.textEl.update(this.text);
240 * Synchronizes the inner bar width to the proper proportion of the total componet width based
241 * on the current progress {@link #value}. This will be called automatically when the ProgressBar
242 * is resized by a layout, but if it is rendered auto width, this method can be called from
243 * another resize handler to sync the ProgressBar if necessary.
245 syncProgressBar : function(){
247 this.updateProgress(this.value, this.text);
253 * Sets the size of the progress bar.
254 * @param {Number} width The new width in pixels
255 * @param {Number} height The new height in pixels
256 * @return {Ext.ProgressBar} this
258 setSize : function(w, h){
259 Ext.ProgressBar.superclass.setSize.call(this, w, h);
261 var inner = this.el.dom.firstChild;
262 this.textEl.setSize(inner.offsetWidth, inner.offsetHeight);
264 this.syncProgressBar();
269 * Resets the progress bar value to 0 and text to empty string. If hide = true, the progress
270 * bar will also be hidden (using the {@link #hideMode} property internally).
271 * @param {Boolean} hide (optional) True to hide the progress bar (defaults to false)
272 * @return {Ext.ProgressBar} this
274 reset : function(hide){
275 this.updateProgress(0);
277 this.textTopEl.addClass('x-hidden');
287 clearTimer : function(){
289 this.waitTimer.onStop = null; //prevent recursion
290 Ext.TaskMgr.stop(this.waitTimer);
291 this.waitTimer = null;
295 onDestroy: function(){
298 if(this.textEl.isComposite){
301 Ext.destroyMembers(this, 'textEl', 'progressBar', 'textTopEl');
303 Ext.ProgressBar.superclass.onDestroy.call(this);
306 Ext.reg('progress', Ext.ProgressBar);