fixes to allow dragging golden layout windows to be aborted with 'esc'. some code cleanup as well to avoid rebuilding golden layout when tabs are closed. Fixes for undo and goldenlayout

1 files changed, 26 insertions, 6 deletions

diff --git a/src/client/goldenLayout.js b/src/client/goldenLayout.js
index 896237e1d..295875ef6 100644
--- a/src/client/goldenLayout.js
+++ b/src/client/goldenLayout.js
@@ -366,6 +366,7 @@
         this._nOriginalY = 0;
 
         this._bDragging = false;
+        this._bAborting = false;
 
         this._fMove = lm.utils.fnBind(this.onMouseMove, this);
         this._fUp = lm.utils.fnBind(this.onMouseUp, this);
@@ -427,6 +428,24 @@
             }
         },
 
+        AbortDrag: function () {
+            if (this._timeout != null) {
+                clearTimeout(this._timeout);
+                this._eBody.removeClass('lm_dragging');
+                this._eElement.removeClass('lm_dragging');
+                this._oDocument.find('iframe').css('pointer-events', '');
+                this._oDocument.unbind('mousemove touchmove', this._fMove);
+                this._oDocument.unbind('mouseup touchend', this._fUp);
+
+                if (this._bDragging === true) {
+                    this._bDragging = false;
+                    this._bAborting = true;
+                    this.emit('dragStop', { pageX: 0, pageY: 0 }, this._nOriginalX + this._nX);
+                    this._bAborting = false;
+                }
+            }
+        },
+
         onMouseUp: function (oEvent) {
             if (this._timeout != null) {
                 clearTimeout(this._timeout);
@@ -2178,18 +2197,18 @@
          */
         _onDrop: function () {
             this._layoutManager.dropTargetIndicator.hide();
-
+            let abortedDrop = this._dragListener._bAborting;
             /*
              * Valid drop area found
              */
-            if (this._area !== null) {
+            if (!abortedDrop && this._area !== null) {
                 this._area.contentItem._$onDrop(this._contentItem, this._area);
 
                 /**
                  * No valid drop area available at present, but one has been found before.
                  * Use it
                  */
-            } else if (this._lastValidArea !== null) {
+            } else if (!abortedDrop && this._lastValidArea !== null) {
                 this._lastValidArea.contentItem._$onDrop(this._contentItem, this._lastValidArea);
 
                 /**
@@ -2197,7 +2216,7 @@
                  * content item to its original position if a original parent is provided.
                  * (Which is not the case if the drag had been initiated by createDragSource)
                  */
-            } else if (this._originalParent) {
+            } else if (!abortedDrop && this._originalParent) {
                 this._originalParent.addChild(this._contentItem);
 
                 /**
@@ -2212,7 +2231,7 @@
             restoreScrollTops(this._contentItem.element)
             this.element.remove();
 
-            this._layoutManager.emit('itemDropped', this._contentItem);
+            !abortedDrop && this._layoutManager.emit('itemDropped', this._contentItem);
         },
 
         /**
@@ -2963,7 +2982,7 @@
             if (this.contentItem.parent.isMaximised === true) {
                 this.contentItem.parent.toggleMaximise();
             }
-            new lm.controls.DragProxy(
+            let proxy = new lm.controls.DragProxy(
                 x,
                 y,
                 this._dragListener,
@@ -2971,6 +2990,7 @@
                 this.contentItem,
                 this.header.parent
             );
+            this._layoutManager.emit('dragStart', proxy);
         },
 
         /**