--- /dev/null
+/**
+ * @class Ext.Layer
+ * @extends Ext.core.Element
+ * An extended {@link Ext.core.Element} object that supports a shadow and shim, constrain to viewport and
+ * automatic maintaining of shadow/shim positions.
+ * @cfg {Boolean} shim False to disable the iframe shim in browsers which need one (defaults to true)
+ * @cfg {String/Boolean} shadow True to automatically create an {@link Ext.Shadow}, or a string indicating the
+ * shadow's display {@link Ext.Shadow#mode}. False to disable the shadow. (defaults to false)
+ * @cfg {Object} dh DomHelper object config to create element with (defaults to {tag: 'div', cls: 'x-layer'}).
+ * @cfg {Boolean} constrain False to disable constrain to viewport (defaults to true)
+ * @cfg {String} cls CSS class to add to the element
+ * @cfg {Number} zindex Starting z-index (defaults to 11000)
+ * @cfg {Number} shadowOffset Number of pixels to offset the shadow (defaults to 4)
+ * @cfg {Boolean} useDisplay
+ * Defaults to use css offsets to hide the Layer. Specify <tt>true</tt>
+ * to use css style <tt>'display:none;'</tt> to hide the Layer.
+ * @cfg {String} visibilityCls The CSS class name to add in order to hide this Layer if this layer
+ * is configured with <code>{@link #hideMode}: 'asclass'</code>
+ * @cfg {String} hideMode
+ * A String which specifies how this Layer will be hidden.
+ * Values may be<div class="mdetail-params"><ul>
+ * <li><code>'display'</code> : The Component will be hidden using the <code>display: none</code> style.</li>
+ * <li><code>'visibility'</code> : The Component will be hidden using the <code>visibility: hidden</code> style.</li>
+ * <li><code>'offsets'</code> : The Component will be hidden by absolutely positioning it out of the visible area of the document. This
+ * is useful when a hidden Component must maintain measurable dimensions. Hiding using <code>display</code> results
+ * in a Component having zero dimensions.</li></ul></div>
+ * @constructor
+ * @param {Object} config An object with config options.
+ * @param {String/HTMLElement} existingEl (optional) Uses an existing DOM element. If the element is not found it creates it.
+ */
+Ext.define('Ext.Layer', {
+ uses: ['Ext.Shadow'],
+
+ // shims are shared among layer to keep from having 100 iframes
+ statics: {
+ shims: []
+ },
+
+ extend: 'Ext.core.Element',
+
+ constructor: function(config, existingEl) {
+ config = config || {};
+ var me = this,
+ dh = Ext.core.DomHelper,
+ cp = config.parentEl,
+ pel = cp ? Ext.getDom(cp) : document.body,
+ hm = config.hideMode;
+
+ if (existingEl) {
+ me.dom = Ext.getDom(existingEl);
+ }
+ if (!me.dom) {
+ me.dom = dh.append(pel, config.dh || {
+ tag: 'div',
+ cls: Ext.baseCSSPrefix + 'layer'
+ });
+ } else {
+ me.addCls(Ext.baseCSSPrefix + 'layer');
+ if (!me.dom.parentNode) {
+ pel.appendChild(me.dom);
+ }
+ }
+
+ if (config.cls) {
+ me.addCls(config.cls);
+ }
+ me.constrain = config.constrain !== false;
+
+ // Allow Components to pass their hide mode down to the Layer if they are floating.
+ // Otherwise, allow useDisplay to override the default hiding method which is visibility.
+ // TODO: Have ExtJS's Element implement visibilityMode by using classes as in Mobile.
+ if (hm) {
+ me.setVisibilityMode(Ext.core.Element[hm.toUpperCase()]);
+ if (me.visibilityMode == Ext.core.Element.ASCLASS) {
+ me.visibilityCls = config.visibilityCls;
+ }
+ } else if (config.useDisplay) {
+ me.setVisibilityMode(Ext.core.Element.DISPLAY);
+ } else {
+ me.setVisibilityMode(Ext.core.Element.VISIBILITY);
+ }
+
+ if (config.id) {
+ me.id = me.dom.id = config.id;
+ } else {
+ me.id = Ext.id(me.dom);
+ }
+ me.position('absolute');
+ if (config.shadow) {
+ me.shadowOffset = config.shadowOffset || 4;
+ me.shadow = Ext.create('Ext.Shadow', {
+ offset: me.shadowOffset,
+ mode: config.shadow
+ });
+ me.disableShadow();
+ } else {
+ me.shadowOffset = 0;
+ }
+ me.useShim = config.shim !== false && Ext.useShims;
+ if (config.hidden === true) {
+ me.hide();
+ } else {
+ this.show();
+ }
+ },
+
+ getZIndex: function() {
+ return parseInt((this.getShim() || this).getStyle('z-index'), 10);
+ },
+
+ getShim: function() {
+ var me = this,
+ shim, pn;
+
+ if (!me.useShim) {
+ return null;
+ }
+ if (!me.shim) {
+ shim = me.self.shims.shift();
+ if (!shim) {
+ shim = me.createShim();
+ shim.enableDisplayMode('block');
+ shim.hide();
+ }
+ pn = me.dom.parentNode;
+ if (shim.dom.parentNode != pn) {
+ pn.insertBefore(shim.dom, me.dom);
+ }
+ me.shim = shim;
+ }
+ return me.shim;
+ },
+
+ hideShim: function() {
+ if (this.shim) {
+ this.shim.setDisplayed(false);
+ this.self.shims.push(this.shim);
+ delete this.shim;
+ }
+ },
+
+ disableShadow: function() {
+ if (this.shadow) {
+ this.shadowDisabled = true;
+ this.shadow.hide();
+ this.lastShadowOffset = this.shadowOffset;
+ this.shadowOffset = 0;
+ }
+ },
+
+ enableShadow: function(show) {
+ if (this.shadow) {
+ this.shadowDisabled = false;
+ this.shadowOffset = this.lastShadowOffset;
+ delete this.lastShadowOffset;
+ if (show) {
+ this.sync(true);
+ }
+ }
+ },
+
+ /**
+ * @private
+ * <p>Synchronize this Layer's associated elements, the shadow, and possibly the shim.</p>
+ * <p>This code can execute repeatedly in milliseconds,
+ * eg: dragging a Component configured liveDrag: true, or which has no ghost method
+ * so code size was sacrificed for efficiency (e.g. no getBox/setBox, no XY calls)</p>
+ * @param {Boolean} doShow Pass true to ensure that the shadow is shown.
+ */
+ sync: function(doShow) {
+ var me = this,
+ shadow = me.shadow,
+ shadowPos, shimStyle, shadowSize;
+
+ if (!this.updating && this.isVisible() && (shadow || this.useShim)) {
+ var shim = this.getShim(),
+ l = this.getLeft(true),
+ t = this.getTop(true),
+ w = this.getWidth(),
+ h = this.getHeight(),
+ shimIndex;
+
+ if (shadow && !this.shadowDisabled) {
+ if (doShow && !shadow.isVisible()) {
+ shadow.show(this);
+ } else {
+ shadow.realign(l, t, w, h);
+ }
+ if (shim) {
+ // TODO: Determine how the shims zIndex is above the layer zIndex at this point
+ shimIndex = shim.getStyle('z-index');
+ if (shimIndex > me.zindex) {
+ me.shim.setStyle('z-index', me.zindex - 2);
+ }
+ shim.show();
+ // fit the shim behind the shadow, so it is shimmed too
+ if (shadow.isVisible()) {
+ shadowPos = shadow.el.getXY();
+ shimStyle = shim.dom.style;
+ shadowSize = shadow.el.getSize();
+ shimStyle.left = (shadowPos[0]) + 'px';
+ shimStyle.top = (shadowPos[1]) + 'px';
+ shimStyle.width = (shadowSize.width) + 'px';
+ shimStyle.height = (shadowSize.height) + 'px';
+ } else {
+ shim.setSize(w, h);
+ shim.setLeftTop(l, t);
+ }
+ }
+ } else if (shim) {
+ // TODO: Determine how the shims zIndex is above the layer zIndex at this point
+ shimIndex = shim.getStyle('z-index');
+ if (shimIndex > me.zindex) {
+ me.shim.setStyle('z-index', me.zindex - 2);
+ }
+ shim.show();
+ shim.setSize(w, h);
+ shim.setLeftTop(l, t);
+ }
+ }
+ return this;
+ },
+
+ remove: function() {
+ this.hideUnders();
+ this.callParent();
+ },
+
+ // private
+ beginUpdate: function() {
+ this.updating = true;
+ },
+
+ // private
+ endUpdate: function() {
+ this.updating = false;
+ this.sync(true);
+ },
+
+ // private
+ hideUnders: function() {
+ if (this.shadow) {
+ this.shadow.hide();
+ }
+ this.hideShim();
+ },
+
+ // private
+ constrainXY: function() {
+ if (this.constrain) {
+ var vw = Ext.core.Element.getViewWidth(),
+ vh = Ext.core.Element.getViewHeight(),
+ s = Ext.getDoc().getScroll(),
+ xy = this.getXY(),
+ x = xy[0],
+ y = xy[1],
+ so = this.shadowOffset,
+ w = this.dom.offsetWidth + so,
+ h = this.dom.offsetHeight + so,
+ moved = false; // only move it if it needs it
+ // first validate right/bottom
+ if ((x + w) > vw + s.left) {
+ x = vw - w - so;
+ moved = true;
+ }
+ if ((y + h) > vh + s.top) {
+ y = vh - h - so;
+ moved = true;
+ }
+ // then make sure top/left isn't negative
+ if (x < s.left) {
+ x = s.left;
+ moved = true;
+ }
+ if (y < s.top) {
+ y = s.top;
+ moved = true;
+ }
+ if (moved) {
+ Ext.Layer.superclass.setXY.call(this, [x, y]);
+ this.sync();
+ }
+ }
+ return this;
+ },
+
+ getConstrainOffset: function() {
+ return this.shadowOffset;
+ },
+
+ // overridden Element method
+ setVisible: function(visible, animate, duration, callback, easing) {
+ var me = this,
+ cb;
+
+ // post operation processing
+ cb = function() {
+ if (visible) {
+ me.sync(true);
+ }
+ if (callback) {
+ callback();
+ }
+ };
+
+ // Hide shadow and shim if hiding
+ if (!visible) {
+ this.hideUnders(true);
+ }
+ this.callParent([visible, animate, duration, callback, easing]);
+ if (!animate) {
+ cb();
+ }
+ return this;
+ },
+
+ // private
+ beforeFx: function() {
+ this.beforeAction();
+ return this.callParent(arguments);
+ },
+
+ // private
+ afterFx: function() {
+ this.callParent(arguments);
+ this.sync(this.isVisible());
+ },
+
+ // private
+ beforeAction: function() {
+ if (!this.updating && this.shadow) {
+ this.shadow.hide();
+ }
+ },
+
+ // overridden Element method
+ setLeft: function(left) {
+ this.callParent(arguments);
+ return this.sync();
+ },
+
+ setTop: function(top) {
+ this.callParent(arguments);
+ return this.sync();
+ },
+
+ setLeftTop: function(left, top) {
+ this.callParent(arguments);
+ return this.sync();
+ },
+
+ setXY: function(xy, animate, duration, callback, easing) {
+
+ // Callback will restore shadow state and call the passed callback
+ callback = this.createCB(callback);
+
+ this.fixDisplay();
+ this.beforeAction();
+ this.callParent([xy, animate, duration, callback, easing]);
+ if (!animate) {
+ callback();
+ }
+ return this;
+ },
+
+ // private
+ createCB: function(callback) {
+ var me = this,
+ showShadow = me.shadow && me.shadow.isVisible();
+
+ return function() {
+ me.constrainXY();
+ me.sync(showShadow);
+ if (callback) {
+ callback();
+ }
+ };
+ },
+
+ // overridden Element method
+ setX: function(x, animate, duration, callback, easing) {
+ this.setXY([x, this.getY()], animate, duration, callback, easing);
+ return this;
+ },
+
+ // overridden Element method
+ setY: function(y, animate, duration, callback, easing) {
+ this.setXY([this.getX(), y], animate, duration, callback, easing);
+ return this;
+ },
+
+ // overridden Element method
+ setSize: function(w, h, animate, duration, callback, easing) {
+ // Callback will restore shadow state and call the passed callback
+ callback = this.createCB(callback);
+
+ this.beforeAction();
+ this.callParent([w, h, animate, duration, callback, easing]);
+ if (!animate) {
+ callback();
+ }
+ return this;
+ },
+
+ // overridden Element method
+ setWidth: function(w, animate, duration, callback, easing) {
+ // Callback will restore shadow state and call the passed callback
+ callback = this.createCB(callback);
+
+ this.beforeAction();
+ this.callParent([w, animate, duration, callback, easing]);
+ if (!animate) {
+ callback();
+ }
+ return this;
+ },
+
+ // overridden Element method
+ setHeight: function(h, animate, duration, callback, easing) {
+ // Callback will restore shadow state and call the passed callback
+ callback = this.createCB(callback);
+
+ this.beforeAction();
+ this.callParent([h, animate, duration, callback, easing]);
+ if (!animate) {
+ callback();
+ }
+ return this;
+ },
+
+ // overridden Element method
+ setBounds: function(x, y, width, height, animate, duration, callback, easing) {
+ // Callback will restore shadow state and call the passed callback
+ callback = this.createCB(callback);
+
+ this.beforeAction();
+ if (!animate) {
+ Ext.Layer.superclass.setXY.call(this, [x, y]);
+ Ext.Layer.superclass.setSize.call(this, width, height);
+ callback();
+ } else {
+ this.callParent([x, y, width, height, animate, duration, callback, easing]);
+ }
+ return this;
+ },
+
+ /**
+ * <p>Sets the z-index of this layer and adjusts any shadow and shim z-indexes. The layer z-index is automatically
+ * incremented depending upon the presence of a shim or a shadow in so that it always shows above those two associated elements.</p>
+ * <p>Any shim, will be assigned the passed z-index. A shadow will be assigned the next highet z-index, and the Layer's
+ * element will receive the highest z-index.
+ * @param {Number} zindex The new z-index to set
+ * @return {this} The Layer
+ */
+ setZIndex: function(zindex) {
+ this.zindex = zindex;
+ if (this.getShim()) {
+ this.shim.setStyle('z-index', zindex++);
+ }
+ if (this.shadow) {
+ this.shadow.setZIndex(zindex++);
+ }
+ this.setStyle('z-index', zindex);
+ return this;
+ }
+});
git.ithinksw.org / extjs.git / blobdiff