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JavaScript

/**
* 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.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.
*
* Ext.create('Ext.Panel', {
* title: 'StatusBar',
* // etc.
* bbar: Ext.create('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
*
*/
Ext.define('Ext.ux.statusbar.StatusBar', {
extend: 'Ext.toolbar.Toolbar',
alternateClassName: 'Ext.ux.StatusBar',
alias: 'widget.statusbar',
requires: ['Ext.toolbar.TextItem'],
/**
* @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 #cfg-items} config, or added via {@link #method-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:
*
* // Create a left-aligned status bar containing a button,
* // separator and text item that will be right-aligned (default):
* Ext.create('Ext.Panel', {
* title: 'StatusBar',
* // etc.
* bbar: Ext.create('Ext.ux.statusbar.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:
* Ext.create('Ext.Panel', {
* title: 'StatusBar',
* // etc.
* bbar: Ext.create('Ext.ux.statusbar.StatusBar', {
* defaultText: 'Default status text',
* id: 'status-id',
* statusAlign: 'right',
* items: [{
* text: 'A Button'
* }, '-', 'Plain Text']
* })
* });
*/
/**
* @cfg {String} [defaultText='']
* The default {@link #text} value. This will be used anytime the status bar is cleared with the
* `useDefaults:true` option.
*/
/**
* @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 `useDefaults:true` option.
*/
/**
* @cfg {String} text
* A string that will be <b>initially</b> set as the status message. This string
* will be set as innerHTML (html tags are accepted) for the toolbar item.
* If not specified, the value set for {@link #defaultText} will be used.
*/
/**
* @cfg {String} [iconCls='']
* A CSS class that will be **initially** set as the status bar icon and is
* expected to provide a background image.
*
* Example usage:
*
* // Example CSS rule:
* .x-statusbar .x-status-custom {
* padding-left: 25px;
* background: transparent url(images/custom-icon.gif) no-repeat 3px 2px;
* }
*
* // Setting a default icon:
* var sb = Ext.create('Ext.ux.statusbar.StatusBar', {
* defaultIconCls: 'x-status-custom'
* });
*
* // Changing the icon:
* sb.setStatus({
* text: 'New status',
* iconCls: 'x-status-custom'
* });
*/
/**
* @cfg {String} cls
* The base class applied to the containing element for this component on render.
*/
cls : 'x-statusbar',
/**
* @cfg {String} busyIconCls
* The default {@link #iconCls} applied when calling {@link #showBusy}.
* It can be overridden at any time by passing the `iconCls` argument into {@link #showBusy}.
*/
busyIconCls : 'x-status-busy',
/**
* @cfg {String} busyText
* The default {@link #text} applied when calling {@link #showBusy}.
* It can be overridden at any time by passing the `text` argument into {@link #showBusy}.
*/
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.
* Note that this only applies when passing the `clear` argument to {@link #setStatus}
* since that is the only way to defer clearing the status. This can
* be overridden by specifying a different `wait` value in {@link #setStatus}.
* Calls to {@link #clearStatus} always clear the status bar immediately and ignore this value.
*/
autoClear : 5000,
/**
* @cfg {String} emptyText
* The text string to use if no text has been set. If there are no other items in
* the toolbar using an empty string (`''`) for this value would end up in the toolbar
* height collapsing since the empty string will not maintain the toolbar height.
* Use `''` if the toolbar should collapse in height vertically when no text is
* specified and there are no other items in the toolbar.
*/
emptyText : '&#160;',
// private
activeThreadId : 0,
// private
initComponent : function(){
var right = this.statusAlign === 'right';
this.callParent(arguments);
this.currIconCls = this.iconCls || this.defaultIconCls;
this.statusEl = Ext.create('Ext.toolbar.TextItem', {
cls: 'x-status-text ' + (this.currIconCls || ''),
text: this.text || this.defaultText || ''
});
if (right) {
this.cls += ' x-status-right';
this.add('->');
this.add(this.statusEl);
} else {
this.insert(0, this.statusEl);
this.insert(1, '->');
}
},
/**
* Sets the status {@link #text} and/or {@link #iconCls}. Also supports automatically clearing the
* status that was set after a specified interval.
*
* Example usage:
*
* // 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
* }
* });
*
* @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:
*
* @param {String} config.text The status text to display. If not specified, any current
* status text will remain unchanged.
*
* @param {String} config.iconCls The CSS class used to customize the status icon (see
* {@link #iconCls} for details). If not specified, any current iconCls will remain unchanged.
*
* @param {Boolean/Number/Object} config.clear 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 `true` 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:
*
* @param {Number} config.clear.wait The number of milliseconds to wait before clearing
* (defaults to {@link #autoClear}).
* @param {Boolean} config.clear.anim False to clear the status immediately once the callback
* executes (defaults to true which fades the status out).
* @param {Boolean} config.clear.useDefaults False to completely clear the status text and iconCls
* (defaults to true which uses {@link #defaultText} and {@link #defaultIconCls}).
*
* @return {Ext.ux.statusbar.StatusBar} this
*/
setStatus : function(o) {
var me = this;
o = o || {};
Ext.suspendLayouts();
if (Ext.isString(o)) {
o = {text:o};
}
if (o.text !== undefined) {
me.setText(o.text);
}
if (o.iconCls !== undefined) {
me.setIcon(o.iconCls);
}
if (o.clear) {
var c = o.clear,
wait = me.autoClear,
defaults = {useDefaults: true, anim: true};
if (Ext.isObject(c)) {
c = Ext.applyIf(c, defaults);
if (c.wait) {
wait = c.wait;
}
} else if (Ext.isNumber(c)) {
wait = c;
c = defaults;
} else if (Ext.isBoolean(c)) {
c = defaults;
}
c.threadId = this.activeThreadId;
Ext.defer(me.clearStatus, wait, me, [c]);
}
Ext.resumeLayouts(true);
return me;
},
/**
* Clears the status {@link #text} and {@link #iconCls}. Also supports clearing via an optional fade out animation.
*
* @param {Object} [config] 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:
* @param {Boolean} config.anim True to clear the status by fading out the status element (defaults
* to false which clears immediately).
* @param {Boolean} config.useDefaults 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).
*
* @return {Ext.ux.statusbar.StatusBar} this
*/
clearStatus : function(o) {
o = o || {};
var me = this,
statusEl = me.statusEl;
if (o.threadId && o.threadId !== me.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 me;
}
var text = o.useDefaults ? me.defaultText : me.emptyText,
iconCls = o.useDefaults ? (me.defaultIconCls ? me.defaultIconCls : '') : '';
if (o.anim) {
// animate the statusEl Ext.Element
statusEl.el.puff({
remove: false,
useDisplay: true,
callback: function() {
statusEl.el.show();
me.setStatus({
text: text,
iconCls: iconCls
});
}
});
} else {
me.setStatus({
text: text,
iconCls: iconCls
});
}
return me;
},
/**
* 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.StatusBar} this
*/
setText : function(text) {
var me = this;
me.activeThreadId++;
me.text = text || '';
if (me.rendered) {
me.statusEl.setText(me.text);
}
return me;
},
/**
* 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.StatusBar} this
*/
setIcon : function(cls) {
var me = this;
me.activeThreadId++;
cls = cls || '';
if (me.rendered) {
if (me.currIconCls) {
me.statusEl.removeCls(me.currIconCls);
me.currIconCls = null;
}
if (cls.length > 0) {
me.statusEl.addCls(cls);
me.currIconCls = cls;
}
} else {
me.currIconCls = cls;
}
return me;
},
/**
* 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
* `text` and/or `iconCls` 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.StatusBar} this
*/
showBusy : function(o){
if (Ext.isString(o)) {
o = { text: o };
}
o = Ext.applyIf(o || {}, {
text: this.busyText,
iconCls: this.busyIconCls
});
return this.setStatus(o);
}
});