/** * A mixin to add floating capability to a Component. */Ext.define('Ext.util.Floating', { mixinId: 'floating', uses: ['Ext.ZIndexManager'], /** * @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, /** * @cfg {Boolean} [modal=false] * True to make the floated component modal and mask everything behind it when displayed, false to display it without * restricting access to other UI elements. */ /** * @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', /** * @cfg {Boolean} [animateShadow=false] * `true` to animate the shadow along with the component while the component is animating. * By default the shadow is hidden while the component is animating */ animateShadow: false, /** * @cfg {Boolean} constrain * True to constrain this Components within its containing element, false to allow it to fall outside of its containing * element. By default this Component will be rendered to `document.body`. To render and constrain this Component within * another element specify {@link Ext.Component#renderTo renderTo}. */ constrain: false, /** * @cfg {Boolean} [fixed=false] * Configure as `true` to have this Component fixed at its `X, Y` coordinates in the browser viewport, immune * to scrolling the document. */ /** * @cfg {Number} shadowOffset * Number of pixels to offset the shadow. */ /** * @cfg {Boolean} shim `true` to enable an iframe shim for this Component to keep * windowed objects from showing through. */ /** * @property {Boolean} floating * The value `true` indicates that this Component is floating. * @private * @readonly */ /** * @property {Ext.ZIndexManager} zIndexManager * Only present for {@link Ext.Component#cfg-floating floating} Components after * they have been rendered. * * A reference to the ZIndexManager which is managing this Component's z-index. * * The {@link Ext.ZIndexManager ZIndexManager} maintains a stack of floating Component z-indices, and also provides * a single modal mask which is insert just beneath the topmost visible modal floating Component. * * Floating Components may be {@link Ext.Component#toFront brought to the front} or {@link Ext.Component#toBack sent to the back} of the * z-index stack. * * This defaults to the global {@link Ext.WindowManager ZIndexManager} for floating Components that are * programatically {@link Ext.Component#method-render rendered}. * * For {@link Ext.Component#cfg-floating floating} Components that are added to a * Container, the ZIndexManager is acquired from the first ancestor Container found * that is floating. If no floating ancestor is found, the global * {@link Ext.WindowManager ZIndexManager} is used. * * See {@link Ext.Component#cfg-floating} and {@link #zIndexParent} * @readonly */ /** * @property {Ext.Container} zIndexParent * Only present for {@link Ext.Component#cfg-floating} Components which were * inserted as child items of Containers, and which have a floating Container in * their containment ancestry. * * For {@link Ext.Component#cfg-floating} Components which are child items of a * Container, the zIndexParent will be a floating ancestor Container which is * responsible for the base z-index value of all its floating descendants. It * provides a {@link Ext.ZIndexManager ZIndexManager} which provides z-indexing * services for all its descendant floating Components. * * Floating Components that are programmatically {@link Ext.Component#method-render rendered} will not have a `zIndexParent` * property. * * For example, the dropdown {@link Ext.view.BoundList BoundList} of a ComboBox which is in a Window will have the * Window as its `zIndexParent`, and will always show above that Window, wherever the Window is placed in the z-index stack. * * See {@link Ext.Component#cfg-floating} and {@link #zIndexManager} * @readonly */ config: { /** * @private * @cfg {Number} activeCounter An incrementing numeric counter indicating activation index for use by the {@link #zIndexManager} * to sort its stack. */ activeCounter: 0, /** * @cfg {Boolean/Number} [alwaysOnTop=false] A flag indicating that this component should be on the top of the z-index stack for use by the {@link #zIndexManager} * to sort its stack. * * This may be a positive number to prioritize the ordering of multiple visible always on top components. * * This may be set to a *negative* number to prioritize a component to the *bottom* of the z-index stack. */ alwaysOnTop: false }, preventDefaultAlign: false, _visModeMap: { visibility: 1, display: 2, offsets: 3 }, constructor: function () { var me = this, el = me.el, shadow = me.shadow, shadowOffset, shadowConfig; if (shadow) { shadowConfig = { mode: (shadow === true) ? 'sides' : shadow }; shadowOffset = me.shadowOffset; if (shadowOffset) { shadowConfig.offset = shadowOffset; } shadowConfig.animate = me.animateShadow; shadowConfig.fixed = me.fixed; el.enableShadow(shadowConfig, false); } if (me.shim || Ext.useShims) { el.enableShim({ fixed: me.fixed }, false); } el.setVisibilityMode(me._visModeMap[me.hideMode]); // mousedown brings to front // Use capture to see the event first before any contained DD instance stop the event. me.el.on({ mousedown: me.onMouseDown, scope: me, capture: 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(); me.initHierarchyEvents(); }, alignTo: function (element, position, offsets, animate) { var me = this; // Since floaters are rendered to the document.body, floaters could become marooned // from its ownerRef if the ownerRef has been rendered into a container that overflows // and then that container is scrolled. if (!me._lastAlignToEl) { Ext.on('scroll', me.onAlignToScroll, me); } // Let's stash these on the component/element in case it's aligned to something else // in its little lifetime. me._lastAlignToEl = element; me._lastAlignToPos = position; me.mixins.positionable.alignTo.call(me, element, position, offsets, animate); }, initFloatConstrain: function () { var me = this, floatParent = me.floatParent; // 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; } }, initHierarchyEvents: function() { var me = this, syncHidden = this.syncHidden; if (!me.hasHierarchyEventListeners) { me.mon(Ext.GlobalEvents, { hide: syncHidden, collapse: syncHidden, show: syncHidden, expand: syncHidden, added: syncHidden, scope: me }); me.hasHierarchyEventListeners = true; } }, registerWithOwnerCt: function() { var me = this, ownerCt = me.ownerCt, zip = me.zIndexParent; if (zip) { zip.unregisterFloatingItem(me); } // Acquire a zIndexParent by traversing the ownerCt axis for the nearest floating ancestor. // This is to find a base which can allocate relative z-index values zip = me.zIndexParent = me.up('[floating]'); // Set the floatParent to the ownertCt if one has been provided. // Otherwise use the zIndexParent. // Developers must only use ownerCt if there is really a containing relationship. me.floatParent = ownerCt || zip; me.initFloatConstrain(); delete me.ownerCt; if (zip) { zip.registerFloatingItem(me); } else { Ext.WindowManager.register(me); } }, /** * @private * Mousedown brings to front, and programmatically grabs focus * unless the mousedown was on a focusable element */ onMouseDown: function (e) { var me = this, focusTask = me.focusTask, // Do not autofocus the Component (which delegates onto the getFocusEl() descendant) // for touch events. parentEvent = e.parentEvent, preventFocus = parentEvent && parentEvent.type === 'touchstart', target, dom, skipFronting; if (me.floating && // get out of here if there is already a pending focus. This usually means // that the handler for a mousedown on a child element set the focus on some // other component, and we so not want to steal it back. See EXTJSIV-9458 (!focusTask || !focusTask.id)) { target = e.target; dom = me.el.dom; // loop the target's ancestors to see if we clicked on a focusable element // or a descendant of a focusable element, If so we don't want to focus // this floating component. If we end up with no target, it probably means // it's been removed from the DOM, so we should attempt to bring ourselves // to front anyway while (!preventFocus && target && target !== dom) { if (Ext.fly(target).isFocusable()) { preventFocus = true; } target = target.parentNode; } // We can skip toFront() if we're already active and the click was // within our element but not on something focusable. skipFronting = Ext.WindowManager.getActive() === me && (target === dom || preventFocus); // If what was mousedowned upon is going to claim focus anyway, pass // preventFocus as true. if (!skipFronting) { me.toFront(preventFocus); } } }, onBeforeFloatLayout: function(){ this.el.preventSync = true; }, onAfterFloatLayout: function(){ var el = this.el; if (el.shadow || el.shim) { // An element's underlays (shadow and shim) are automatically synced in response // to any calls to Ext.Element APIs that change the element's size or position // (setXY, setWidth, etc). Since the layout system bypasses these APIs and // sets the element's styles directly, we need to trigger a sync now. el.setUnderlaysVisible(true); el.syncUnderlays(); } }, /** * synchronizes the hidden state of this component with the state of its hierarchy * @private */ syncHidden: function() { var me = this, hidden = me.hidden || !me.rendered, hierarchicallyHidden = me.hierarchicallyHidden = me.isHierarchicallyHidden(), pendingShow = me.pendingShow; if (hidden !== hierarchicallyHidden) { if (hierarchicallyHidden) { me.hide(); me.pendingShow = true; } else if (pendingShow) { delete me.pendingShow; if (pendingShow.length) { me.show.apply(me, pendingShow); } else { me.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; }, /** * 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.dom.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 constrained position. // calculateConstrainedPosition will provide a default constraint // region if there is no explicit constrainTo, *and* there is no floatParent owner Component. xy = me.calculateConstrainedPosition(constrainTo, null, true); // false is returned if no movement is needed if (xy) { me.setPosition(xy); } }, updateActiveCounter: function(activeCounter) { var zim = this.zIndexParent; // If we have a zIndexParent, it has to rebase its own zIndices if (zim && this.bringParentToFront !== false) { zim.setActiveCounter(++Ext.ZIndexManager.activeCounter); } // Rebase the local zIndices zim = this.zIndexManager; if (zim) { zim.onComponentUpdate(this); } }, updateAlwaysOnTop: function(alwaysOnTop) { var z = this.zIndexManager; // Rebase the local zIndices if (z) { z.onComponentUpdate(this); } }, /** * 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; // ZIndexManager#onCollectionSort will call setActive if this component ends up on the top. // That will focus it if we have been requested to do so. if (me.zIndexManager.bringToFront(me, preventFocus || !me.focusOnToFront)) { if (me.hasListeners.tofront) { me.fireEvent('tofront', me, me.el.getZIndex()); } } return me; }, /** * @private * 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 {Boolean} [doFocus] When activating, set to true to focus the component; * when deactivating, set to false to avoid returning focus to previous element. * */ setActive: function(active, doFocus) { var me = this, activeCmp; if (active) { if (me.el.shadow && !me.maximized) { me.el.enableShadow(null, true); } // We only do focus processing upon activate, which means this component // has been brought to the front by its ZIndexManager if (doFocus) { activeCmp = Ext.ComponentManager.getActiveComponent(); // Skip focusing if we already contain focused element if (!activeCmp || !activeCmp.up(me)) { me.focus(); } } me.fireEvent('activate', me); } // Deactivate carries no operations. It may be that this component has just moved down and another // component has been brought to the top, so that will automatically receive focus. // If we have been hidden, Component#onHide handles reverting focus to the previousExternalFocus element. else { me.fireEvent('deactivate', me); } }, /** * 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; }, /** * Center this Component in its container. * @return {Ext.Component} this */ center: function() { var me = this, xy; if (me.isVisible()) { xy = me.getAlignToXY(me.container, 'c-c'); me.setPagePosition(xy); } else { me.needsCenter = true; } return me; }, onFloatShow: function() { if (this.needsCenter) { this.center(); } delete this.needsCenter; if (this.toFrontOnShow) { this.toFront(); } }, /** * @private */ fitContainer: function(animate) { var me = this, parent = me.floatParent, container = parent ? parent.getTargetEl() : me.container, newBox = container.getViewSize(), newPosition = parent || (container.dom !== document.body) ? // If we are a contained floater, or rendered to a div, maximized position is (0,0) [0, 0] : // If no parent and rendered to body, align with origin of container el. container.getXY(); newBox.x = newPosition[0]; newBox.y = newPosition[1]; me.setBox(newBox, animate); }, privates: { onFloatDestroy: function() { this.clearAlignEl(); }, clearAlignEl: function() { var me = this; if (me._lastAlignToEl) { Ext.un('scroll', me.onAlignToScroll, me); me._lastAlignPos = me._lastAlignToEl = null; } }, onAlignToScroll: function (scroller) { var me = this, el = me._lastAlignToEl, dom; // Realign only if this element is not contained within the scrolling element. if (el && !scroller.getElement().contains(me.el)) { dom = el.isElement ? el.dom : el; if (dom && !Ext.isGarbage(dom)) { me.alignTo(el, me._lastAlignToPos); } else { me.clearAlignEl(); } } } }});