X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/7a654f8d43fdb43d78b63d90528bed6e86b608cc..3789b528d8dd8aad4558e38e22d775bcab1cbd36:/docs/source/SplitterTracker.html
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+
+
+
+
+ The source code
+
+
+
+
+
+
+ /**
+ * @class Ext.resizer.SplitterTracker
+ * @extends Ext.dd.DragTracker
+ * Private utility class for Ext.Splitter.
+ * @private
+ */
+Ext.define('Ext.resizer.SplitterTracker', {
+ extend: 'Ext.dd.DragTracker',
+ requires: ['Ext.util.Region'],
+ enabled: true,
+
+ overlayCls: Ext.baseCSSPrefix + 'resizable-overlay',
+
+ getPrevCmp: function() {
+ var splitter = this.getSplitter();
+ return splitter.previousSibling();
+ },
+
+ getNextCmp: function() {
+ var splitter = this.getSplitter();
+ return splitter.nextSibling();
+ },
+
+ // ensure the tracker is enabled, store boxes of previous and next
+ // components and calculate the constrain region
+ onBeforeStart: function(e) {
+ var me = this,
+ prevCmp = me.getPrevCmp(),
+ nextCmp = me.getNextCmp(),
+ collapseEl = me.getSplitter().collapseEl,
+ overlay;
+
+ if (collapseEl && (e.getTarget() === me.getSplitter().collapseEl.dom)) {
+ return false;
+ }
+
+ // SplitterTracker is disabled if any of its adjacents are collapsed.
+ if (nextCmp.collapsed || prevCmp.collapsed) {
+ return false;
+ }
+
+ overlay = me.overlay = Ext.getBody().createChild({
+ cls: me.overlayCls,
+ html: ' '
+ });
+ overlay.unselectable();
+ overlay.setSize(Ext.core.Element.getViewWidth(true), Ext.core.Element.getViewHeight(true));
+ overlay.show();
+
+ // store boxes of previous and next
+ me.prevBox = prevCmp.getEl().getBox();
+ me.nextBox = nextCmp.getEl().getBox();
+ me.constrainTo = me.calculateConstrainRegion();
+ },
+
+ // We move the splitter el. Add the proxy class.
+ onStart: function(e) {
+ var splitter = this.getSplitter();
+ splitter.addCls(splitter.baseCls + '-active');
+ },
+
+ // calculate the constrain Region in which the splitter el may be moved.
+ calculateConstrainRegion: function() {
+ var me = this,
+ splitter = me.getSplitter(),
+ splitWidth = splitter.getWidth(),
+ defaultMin = splitter.defaultSplitMin,
+ orient = splitter.orientation,
+ prevBox = me.prevBox,
+ prevCmp = me.getPrevCmp(),
+ nextBox = me.nextBox,
+ nextCmp = me.getNextCmp(),
+ // prev and nextConstrainRegions are the maximumBoxes minus the
+ // minimumBoxes. The result is always the intersection
+ // of these two boxes.
+ prevConstrainRegion, nextConstrainRegion;
+
+ // vertical splitters, so resizing left to right
+ if (orient === 'vertical') {
+
+ // Region constructor accepts (top, right, bottom, left)
+ // anchored/calculated from the left
+ prevConstrainRegion = Ext.create('Ext.util.Region',
+ prevBox.y,
+ // Right boundary is x + maxWidth if there IS a maxWidth.
+ // Otherwise it is calculated based upon the minWidth of the next Component
+ (prevCmp.maxWidth ? prevBox.x + prevCmp.maxWidth : nextBox.right - (nextCmp.minWidth || defaultMin)) + splitWidth,
+ prevBox.bottom,
+ prevBox.x + (prevCmp.minWidth || defaultMin)
+ );
+ // anchored/calculated from the right
+ nextConstrainRegion = Ext.create('Ext.util.Region',
+ nextBox.y,
+ nextBox.right - (nextCmp.minWidth || defaultMin),
+ nextBox.bottom,
+ // Left boundary is right - maxWidth if there IS a maxWidth.
+ // Otherwise it is calculated based upon the minWidth of the previous Component
+ (nextCmp.maxWidth ? nextBox.right - nextCmp.maxWidth : prevBox.x + (prevBox.minWidth || defaultMin)) - splitWidth
+ );
+ } else {
+ // anchored/calculated from the top
+ prevConstrainRegion = Ext.create('Ext.util.Region',
+ prevBox.y + (prevCmp.minHeight || defaultMin),
+ prevBox.right,
+ // Bottom boundary is y + maxHeight if there IS a maxHeight.
+ // Otherwise it is calculated based upon the minWidth of the next Component
+ (prevCmp.maxHeight ? prevBox.y + prevCmp.maxHeight : nextBox.bottom - (nextCmp.minHeight || defaultMin)) + splitWidth,
+ prevBox.x
+ );
+ // anchored/calculated from the bottom
+ nextConstrainRegion = Ext.create('Ext.util.Region',
+ // Top boundary is bottom - maxHeight if there IS a maxHeight.
+ // Otherwise it is calculated based upon the minHeight of the previous Component
+ (nextCmp.maxHeight ? nextBox.bottom - nextCmp.maxHeight : prevBox.y + (prevCmp.minHeight || defaultMin)) - splitWidth,
+ nextBox.right,
+ nextBox.bottom - (nextCmp.minHeight || defaultMin),
+ nextBox.x
+ );
+ }
+
+ // intersection of the two regions to provide region draggable
+ return prevConstrainRegion.intersect(nextConstrainRegion);
+ },
+
+ // Performs the actual resizing of the previous and next components
+ performResize: function(e) {
+ var me = this,
+ offset = me.getOffset('dragTarget'),
+ splitter = me.getSplitter(),
+ orient = splitter.orientation,
+ prevCmp = me.getPrevCmp(),
+ nextCmp = me.getNextCmp(),
+ owner = splitter.ownerCt,
+ layout = owner.getLayout();
+
+ // Inhibit automatic container layout caused by setSize calls below.
+ owner.suspendLayout = true;
+
+ if (orient === 'vertical') {
+ if (prevCmp) {
+ if (!prevCmp.maintainFlex) {
+ delete prevCmp.flex;
+ prevCmp.setSize(me.prevBox.width + offset[0], prevCmp.getHeight());
+ }
+ }
+ if (nextCmp) {
+ if (!nextCmp.maintainFlex) {
+ delete nextCmp.flex;
+ nextCmp.setSize(me.nextBox.width - offset[0], nextCmp.getHeight());
+ }
+ }
+ // verticals
+ } else {
+ if (prevCmp) {
+ if (!prevCmp.maintainFlex) {
+ delete prevCmp.flex;
+ prevCmp.setSize(prevCmp.getWidth(), me.prevBox.height + offset[1]);
+ }
+ }
+ if (nextCmp) {
+ if (!nextCmp.maintainFlex) {
+ delete nextCmp.flex;
+ nextCmp.setSize(prevCmp.getWidth(), me.nextBox.height - offset[1]);
+ }
+ }
+ }
+ delete owner.suspendLayout;
+ layout.onLayout();
+ },
+
+ // perform the resize and remove the proxy class from the splitter el
+ onEnd: function(e) {
+ var me = this,
+ splitter = me.getSplitter();
+
+ splitter.removeCls(splitter.baseCls + '-active');
+ if (me.overlay) {
+ me.overlay.remove();
+ delete me.overlay;
+ }
+ me.performResize();
+ },
+
+ // Track the proxy and set the proper XY coordinates
+ // while constraining the drag
+ onDrag: function(e) {
+ var me = this,
+ offset = me.getOffset('dragTarget'),
+ splitter = me.getSplitter(),
+ splitEl = splitter.getEl(),
+ orient = splitter.orientation;
+
+ if (orient === "vertical") {
+ splitEl.setX(me.startRegion.left + offset[0]);
+ } else {
+ splitEl.setY(me.startRegion.top + offset[1]);
+ }
+ },
+
+ getSplitter: function() {
+ return Ext.getCmp(this.getDragCt().id);
+ }
+});
+
+