Floating.html
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<pre class="prettyprint lang-js"><span id='Ext-util-Floating'>/**
</span> * A mixin to add floating capability to a Component.
*/
Ext.define('Ext.util.Floating', {
uses: ['Ext.Layer', 'Ext.window.Window'],
<span id='Ext-util-Floating-cfg-focusOnToFront'> /**
</span> * @cfg {Boolean} focusOnToFront
* Specifies whether the floated component should be automatically {@link Ext.Component#method-focus focused} when
* it is {@link #toFront brought to the front}.
*/
focusOnToFront: true,
<span id='Ext-util-Floating-cfg-shadow'> /**
</span> * @cfg {String/Boolean} shadow
* Specifies whether the floating component should be given a shadow. Set to true to automatically create an
* {@link Ext.Shadow}, or a string indicating the shadow's display {@link Ext.Shadow#mode}. Set to false to
* disable the shadow.
*/
shadow: 'sides',
<span id='Ext-util-Floating-cfg-shadowOffset'> /**
</span> * @cfg {String/Boolean} shadowOffset
* Number of pixels to offset the shadow.
*/
constructor: function (dom) {
var me = this;
me.el = new Ext.Layer(Ext.apply({
hideMode : me.hideMode,
hidden : me.hidden,
shadow : (typeof me.shadow != 'undefined') ? me.shadow : 'sides',
shadowOffset : me.shadowOffset,
constrain : false,
shim : (me.shim === false) ? false : undefined
}, me.floating), dom);
// release config object (if it was one)
me.floating = true;
// Register with the configured ownerCt.
// With this we acquire a floatParent for relative positioning, and a zIndexParent which is an
// ancestor floater which provides zIndex management.
me.registerWithOwnerCt();
},
registerWithOwnerCt: function() {
var me = this;
if (me.zIndexParent) {
me.zIndexParent.unregisterFloatingItem(me);
}
// Acquire a zIndexParent by traversing the ownerCt axis for the nearest floating ancestor
me.zIndexParent = me.up('[floating]');
me.setFloatParent(me.ownerCt);
delete me.ownerCt;
if (me.zIndexParent) {
me.zIndexParent.registerFloatingItem(me);
} else {
Ext.WindowManager.register(me);
}
},
setFloatParent: function(floatParent) {
var me = this;
// Remove listeners from previous floatParent
if (me.floatParent) {
me.mun(me.floatParent, {
hide: me.onFloatParentHide,
show: me.onFloatParentShow,
scope: me
});
}
me.floatParent = floatParent;
// Floating Components as children of Containers must hide when their parent hides.
if (floatParent) {
me.mon(me.floatParent, {
hide: me.onFloatParentHide,
show: me.onFloatParentShow,
scope: me
});
}
// If a floating Component is configured to be constrained, but has no configured
// constrainTo setting, set its constrainTo to be it's ownerCt before rendering.
if ((me.constrain || me.constrainHeader) && !me.constrainTo) {
me.constrainTo = floatParent ? floatParent.getTargetEl() : me.container;
}
},
onAfterFloatLayout: function(){
this.syncShadow();
},
onFloatParentHide: function() {
var me = this;
if (me.hideOnParentHide !== false && me.isVisible()) {
me.hide();
me.showOnParentShow = true;
}
},
onFloatParentShow: function() {
if (this.showOnParentShow) {
delete this.showOnParentShow;
this.show();
}
},
// private
// z-index is managed by the zIndexManager and may be overwritten at any time.
// Returns the next z-index to be used.
// If this is a Container, then it will have rebased any managed floating Components,
// and so the next available z-index will be approximately 10000 above that.
setZIndex: function(index) {
var me = this;
me.el.setZIndex(index);
// Next item goes 10 above;
index += 10;
// When a Container with floating descendants has its z-index set, it rebases any floating descendants it is managing.
// The returned value is a round number approximately 10000 above the last z-index used.
if (me.floatingDescendants) {
index = Math.floor(me.floatingDescendants.setBase(index) / 100) * 100 + 10000;
}
return index;
},
<span id='Ext-util-Floating-method-doConstrain'> /**
</span> * Moves this floating Component into a constrain region.
*
* By default, this Component is constrained to be within the container it was added to, or the element it was
* rendered to.
*
* An alternative constraint may be passed.
* @param {String/HTMLElement/Ext.Element/Ext.util.Region} [constrainTo] The Element or {@link Ext.util.Region Region}
* into which this Component is to be constrained. Defaults to the element into which this floating Component
* was rendered.
*/
doConstrain: function(constrainTo) {
var me = this,
// Calculate the constrain vector to coerce our position to within our
// constrainTo setting. getConstrainVector will provide a default constraint
// region if there is no explicit constrainTo, *and* there is no floatParent owner Component.
vector = me.getConstrainVector(constrainTo),
xy;
if (vector) {
xy = me.getPosition(!!me.floatParent);
xy[0] += vector[0];
xy[1] += vector[1];
me.setPosition(xy);
}
},
<span id='Ext-util-Floating-method-getConstrainVector'> /**
</span> * Gets the x/y offsets to constrain this float
* @private
* @param {String/HTMLElement/Ext.Element/Ext.util.Region} [constrainTo] The Element or {@link Ext.util.Region Region}
* into which this Component is to be constrained.
* @return {Number[]} The x/y constraints
*/
getConstrainVector: function(constrainTo){
var me = this;
if (me.constrain || me.constrainHeader) {
constrainTo = constrainTo || (me.floatParent && me.floatParent.getTargetEl()) || me.container || me.el.getScopeParent();
return (me.constrainHeader ? me.header.el : me.el).getConstrainVector(constrainTo);
}
},
<span id='Ext-util-Floating-method-alignTo'> /**
</span> * Aligns this floating Component to the specified element
*
* @param {Ext.Component/Ext.Element/HTMLElement/String} element
* The element or {@link Ext.Component} to align to. If passing a component, it must be a
* component instance. If a string id is passed, it will be used as an element id.
* @param {String} [position="tl-bl?"] The position to align to
* (see {@link Ext.Element#alignTo} for more details).
* @param {Number[]} [offsets] Offset the positioning by [x, y]
* @return {Ext.Component} this
*/
alignTo: function(element, position, offsets) {
// element may be a Component, so first attempt to use its el to align to.
// When aligning to an Element's X,Y position, we must use setPagePosition which disregards any floatParent
this.setPagePosition(this.el.getAlignToXY(element.el || element, position, offsets));
return this;
},
<span id='Ext-util-Floating-method-toFront'> /**
</span> * Brings this floating Component to the front of any other visible, floating Components managed by the same
* {@link Ext.ZIndexManager ZIndexManager}
*
* If this Component is modal, inserts the modal mask just below this Component in the z-index stack.
*
* @param {Boolean} [preventFocus=false] Specify `true` to prevent the Component from being focused.
* @return {Ext.Component} this
*/
toFront: function(preventFocus) {
var me = this;
// Find the floating Component which provides the base for this Component's zIndexing.
// That must move to front to then be able to rebase its zIndex stack and move this to the front
if (me.zIndexParent && me.bringParentToFront !== false) {
me.zIndexParent.toFront(true);
}
if (!Ext.isDefined(preventFocus)) {
preventFocus = !me.focusOnToFront;
}
if (preventFocus) {
me.preventFocusOnActivate = true;
}
if (me.zIndexManager.bringToFront(me)) {
if (!preventFocus) {
// Kick off a delayed focus request.
// If another floating Component is toFronted before the delay expires
// this will not receive focus.
me.focus(false, true);
}
}
delete me.preventFocusOnActivate;
return me;
},
<span id='Ext-util-Floating-method-setActive'> /**
</span> * This method is called internally by {@link Ext.ZIndexManager} to signal that a floating Component has either been
* moved to the top of its zIndex stack, or pushed from the top of its zIndex stack.
*
* If a _Window_ is superceded by another Window, deactivating it hides its shadow.
*
* This method also fires the {@link Ext.Component#activate activate} or
* {@link Ext.Component#deactivate deactivate} event depending on which action occurred.
*
* @param {Boolean} [active=false] True to activate the Component, false to deactivate it.
* @param {Ext.Component} [newActive] The newly active Component which is taking over topmost zIndex position.
*/
setActive: function(active, newActive) {
var me = this;
if (active) {
if (me.el.shadow && !me.maximized) {
me.el.enableShadow(true);
}
if (me.modal && !me.preventFocusOnActivate) {
me.focus(false, true);
}
me.fireEvent('activate', me);
} else {
// Only the *Windows* in a zIndex stack share a shadow. All other types of floaters
// can keep their shadows all the time
if (me.isWindow && (newActive && newActive.isWindow)) {
me.el.disableShadow();
}
me.fireEvent('deactivate', me);
}
},
<span id='Ext-util-Floating-method-toBack'> /**
</span> * Sends this Component to the back of (lower z-index than) any other visible windows
* @return {Ext.Component} this
*/
toBack: function() {
this.zIndexManager.sendToBack(this);
return this;
},
<span id='Ext-util-Floating-method-center'> /**
</span> * Center this Component in its container.
* @return {Ext.Component} this
*/
center: function() {
var me = this,
xy;
if (me.isVisible()) {
xy = me.el.getAlignToXY(me.container, 'c-c');
me.setPagePosition(xy);
} else {
me.needsCenter = true;
}
return me;
},
onFloatShow: function() {
if (this.needsCenter) {
this.center();
}
delete this.needsCenter;
},
// private
syncShadow : function() {
if (this.floating) {
this.el.sync(true);
}
},
// private
fitContainer: function() {
var me = this,
parent = me.floatParent,
container = parent ? parent.getTargetEl() : me.container;
me.setSize(container.getViewSize(false));
me.setPosition.apply(me, parent ? [0, 0] : container.getXY());
}
});
</pre>
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