The source code

/** + * @class Ext.Button + * @extends Ext.BoxComponent + * Simple Button class + * @cfg {String} text The button text to be used as innerHTML (html tags are accepted) + * @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). + * The handler is passed the following parameters:

b : Button
This Button.
e : EventObject
The click event.

+ * @cfg {Number} minWidth The minimum width for this button (used to give a set of buttons a common width). + * See also {@link Ext.Panel}.{@link Ext.Panel#minButtonWidth minButtonWidth}. + * @cfg {String/Object} tooltip The tooltip for the button - can be a string to be used as innerHTML (html tags are accepted) 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) + * @cfg {Boolean/Object} repeat True to repeat fire the click event while the mouse is down. This can also be + * a {@link Ext.util.ClickRepeater ClickRepeater} config object (defaults to false). + * @constructor + * Create a new button + * @param {Object} config The config object + * @xtype button + */ +Ext.Button = Ext.extend(Ext.BoxComponent, { + /** + * 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} allowDepress + * False to not allow a pressed Button to be depressed (defaults to undefined). Only valid when {@link #enableToggle} is true. + */ + + /** + * @cfg {Boolean} enableToggle + * True to enable pressed/not pressed toggling (defaults to false) + */ + enableToggle : false, + /** + * @cfg {Function} toggleHandler + * Function called when a Button with {@link #enableToggle} set to true is clicked. Two arguments are passed:

button : Ext.Button
this Button object
state : Boolean
The next state if the Button, true means pressed.

+ */ + /** + * @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} overflowText If used in a {@link Ext.Toolbar Toolbar}, the + * text to be used if this item is shown in the overflow menu. See also + * {@link Ext.Toolbar.Item}.{@link Ext.Toolbar.Item#overflowText overflowText}. + */ + /** + * @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:nth(2)', + + /** + * @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', + + /** + * @cfg {String} buttonSelector + *

(Optional) A {@link Ext.DomQuery DomQuery} selector which is used to extract the active, clickable element from the + * DOM structure created.

+ *

When a custom {@link #template} is used, you must ensure that this selector results in the selection of + * a focussable element.

+ *

Defaults to 'button:first-child'.

+ */ + buttonSelector : 'button:first-child', + + /** + * @cfg {String} scale + *

(Optional) The size of the Button. Three values are allowed:

+ *

'small'
Results in the button element being 16px high.
'medium'
Results in the button element being 24px high.
'large'
Results in the button element being 32px high.

+ *

Defaults to 'small'.

+ */ + scale : 'small', + + /** + * @cfg {Object} scope The scope (this reference) in which the + * {@link #handler} and {@link #toggleHandler} is + * executed. Defaults to this Button. + */ + + /** + * @cfg {String} iconAlign + *

(Optional) The side of the Button box to render the icon. Four values are allowed:

+ *

'top'
'right'
'bottom'
'left'

+ *

Defaults to 'left'.

+ */ + iconAlign : 'left', + + /** + * @cfg {String} arrowAlign + *

(Optional) The side of the Button box to render the arrow if the button has an associated {@link #menu}. + * Two values are allowed:

+ *

'right'
'bottom'

+ *

Defaults to 'right'.

+ */ + arrowAlign : 'right', + + /** + * @cfg {Ext.Template} template (Optional) + *

A {@link Ext.Template Template} used to create the Button's DOM structure.

+ * Instances, or subclasses which need a different DOM structure may provide a different + * template layout in conjunction with an implementation of {@link #getTemplateArgs}. + * @type Ext.Template + * @property template + */ + /** + * @cfg {String} cls + * A CSS class string to apply to the button's main element. + */ + /** + * @property menu + * @type Menu + * The {@link Ext.menu.Menu Menu} object associated with this Button when configured with the {@link #menu} config option. + */ + + 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(Ext.isString(this.toggleGroup)){ + this.enableToggle = true; + } + }, + +/** + *

This method returns an object which provides substitution parameters for the {@link #template Template} used + * to create this Button's DOM structure.

+ *

Instances or subclasses which use a different Template to create a different DOM structure may need to provide their + * own implementation of this method.

+ *

The default implementation which provides data for the default {@link #template} returns an Array containing the + * following items:

The Button's {@link #text}
The <button>'s {@link #type}
The {@link iconCls} applied to the <button> {@link #btnEl element}
The {@link #cls} applied to the Button's main {@link #getEl Element}
A CSS class name controlling the Button's {@link #scale} and {@link #iconAlign icon alignment}
A CSS class name which applies an arrow to the Button if configured with a {@link #menu}

+ * @return {Object} Substitution data for a Template. + */ + getTemplateArgs : function(){ + var cls = (this.cls || ''); + cls += (this.iconCls || this.icon) ? (this.text ? ' x-btn-text-icon' : ' x-btn-icon') : ' x-btn-noicon'; + if(this.pressed){ + cls += ' x-btn-pressed'; + } + return [this.text || ' ', this.type, this.iconCls || '', cls, 'x-btn-' + this.scale + ' x-btn-icon-' + this.scale + '-' + this.iconAlign, this.getMenuClass()]; + }, + + // protected + getMenuClass : function(){ + return this.menu ? (this.arrowAlign != 'bottom' ? 'x-btn-arrow' : 'x-btn-arrow-bottom') : ''; + }, + + // private + onRender : function(ct, position){ + if(!this.template){ + if(!Ext.Button.buttonTemplate){ + // hideous table template + Ext.Button.buttonTemplate = new Ext.Template( + '', + '', + '', + '', + "

"); + Ext.Button.buttonTemplate.compile(); + } + this.template = Ext.Button.buttonTemplate; + } + + var btn, targs = this.getTemplateArgs(); + + if(position){ + btn = this.template.insertBefore(position, targs, true); + }else{ + btn = this.template.append(ct, targs, true); + } + /** + * An {@link Ext.Element Element} encapsulating the Button's clickable element. By default, + * this references a <button> element. Read only. + * @type Ext.Element + * @property btnEl + */ + this.btnEl = btn.child(this.buttonSelector); + this.mon(this.btnEl, { + scope: this, + focus: this.onFocus, + blur: this.onBlur + }); + + this.initButtonEl(btn, this.btnEl); + + Ext.ButtonToggleMgr.register(this); + }, + + // private + initButtonEl : function(btn, btnEl){ + this.el = btn; + + if(this.id){ + this.el.dom.id = this.el.id = this.id; + } + if(this.icon){ + btnEl.setStyle('background-image', 'url(' +this.icon +')'); + } + if(this.tabIndex !== undefined){ + btnEl.dom.tabIndex = this.tabIndex; + } + if(this.tooltip){ + this.setTooltip(this.tooltip, true); + } + + if(this.handleMouseEvents){ + this.mon(btn, { + scope: this, + mouseover: this.onMouseOver, + mousedown: this.onMouseDown + }); + + // new functionality for monitoring on the document level + //this.mon(btn, 'mouseout', this.onMouseOut, this); + } + + if(this.menu){ + this.mon(this.menu, { + scope: this, + show: this.onMenuShow, + hide: this.onMenuHide + }); + } + + if(this.repeat){ + var repeater = new Ext.util.ClickRepeater(btn, Ext.isObject(this.repeat) ? this.repeat : {}); + this.mon(repeater, 'click', this.onClick, this); + } + + this.mon(btn, this.clickEvent, this.onClick, this); + }, + + // private + afterRender : function(){ + Ext.Button.superclass.afterRender.call(this); + this.doAutoWidth(); + }, + + /** + * 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 + * @return {Ext.Button} this + */ + setIconClass : function(cls){ + if(this.el){ + this.btnEl.replaceClass(this.iconCls, cls); + } + this.iconCls = cls; + return this; + }, + + /** + * Sets the tooltip for this Button. + * @param {String/Object} tooltip. This may be:

String : A string to be used as innerHTML (html tags are accepted) to show in a tooltip
Object : A configuration object for {@link Ext.QuickTips#register}.

+ * @return {Ext.Button} this + */ + setTooltip : function(tooltip, /* private */ initial){ + if(this.rendered){ + if(!initial){ + this.clearTip(); + } + if(Ext.isObject(tooltip)){ + Ext.QuickTips.register(Ext.apply({ + target: this.btnEl.id + }, tooltip)); + this.tooltip = tooltip; + }else{ + this.btnEl.dom[this.tooltipType] = tooltip; + } + }else{ + this.tooltip = tooltip; + } + return this; + }, + + // private + clearTip : function(){ + if(Ext.isObject(this.tooltip)){ + Ext.QuickTips.unregister(this.btnEl); + } + }, + + // private + beforeDestroy : function(){ + if(this.rendered){ + this.clearTip(); + } + Ext.destroy(this.menu, this.repeater); + }, + + // private + onDestroy : function(){ + var doc = Ext.getDoc(); + doc.un('mouseover', this.monitorMouseOver, this); + doc.un('mouseup', this.onMouseUp, this); + if(this.rendered){ + Ext.ButtonToggleMgr.unregister(this); + } + }, + + // private + doAutoWidth : function(){ + if(this.el && this.text && this.width === undefined){ + this.el.setWidth('auto'); + if(Ext.isIE7 && Ext.isStrict){ + var ib = this.btnEl; + 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. Defaults to this Button. + * @return {Ext.Button} this + */ + setHandler : function(handler, scope){ + this.handler = handler; + this.scope = scope; + return this; + }, + + /** + * Sets this Button's text + * @param {String} text The button text + * @return {Ext.Button} this + */ + setText : function(text){ + this.text = text; + if(this.el){ + this.el.child('td.x-btn-mc ' + this.buttonSelector).update(text); + } + this.doAutoWidth(); + return this; + }, + + /** + * 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 + * @param {Boolean} supressEvent (optional) True to stop events being fired when calling this method. + * @return {Ext.Button} this + */ + toggle : function(state, suppressEvent){ + state = state === undefined ? !this.pressed : !!state; + if(state != this.pressed){ + if(this.rendered){ + this.el[state ? 'addClass' : 'removeClass']('x-btn-pressed'); + } + this.pressed = state; + if(!suppressEvent){ + this.fireEvent('toggle', this, state); + if(this.toggleHandler){ + this.toggleHandler.call(this.scope || this, this, state); + } + } + } + return this; + }, + + /** + * Focus the button + */ + focus : function(){ + this.btnEl.focus(); + }, + + // private + onDisable : function(){ + this.onDisableChange(true); + }, + + // private + onEnable : function(){ + this.onDisableChange(false); + }, + + onDisableChange : function(disabled){ + if(this.el){ + if(!Ext.isIE6 || !this.text){ + this.el[disabled ? 'addClass' : 'removeClass'](this.disabledClass); + } + this.el.dom.disabled = disabled; + } + this.disabled = disabled; + }, + + /** + * Show this button's menu (if it has one) + */ + showMenu : function(){ + if(this.rendered && this.menu){ + if(this.tooltip){ + Ext.QuickTips.getQuickTip().cancelShow(this.btnEl); + } + 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'); + if(!this.monitoringMouseOver){ + Ext.getDoc().on('mouseover', this.monitorMouseOver, this); + this.monitoringMouseOver = true; + } + 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)){ + if(this.monitoringMouseOver){ + Ext.getDoc().un('mouseover', this.monitorMouseOver, this); + this.monitoringMouseOver = false; + } + 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); + } + }, + + /** + * Gets the pressed button in the passed group or null + * @param {String} group + * @return Button + */ + getPressed : function(group){ + var g = groups[group]; + if(g){ + for(var i = 0, len = g.length; i < len; i++){ + if(g[i].pressed === true){ + return g[i]; + } + } + } + return null; + } + }; +}();