X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/ee06f37b0f6f6d94cd05a6ffae556660f7c4a2bc..c930e9176a5a85509c5b0230e2bff5c22a591432:/docs/source/ColumnDD.html
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+
+
+ The source code
+
+
+
+
+ // private
+// This is a support class used internally by the Grid components
+Ext.grid.HeaderDragZone = function(grid, hd, hd2){
+ this.grid = grid;
+ this.view = grid.getView();
+ this.ddGroup = "gridHeader" + this.grid.getGridEl().id;
+ Ext.grid.HeaderDragZone.superclass.constructor.call(this, hd);
+ if(hd2){
+ this.setHandleElId(Ext.id(hd));
+ this.setOuterHandleElId(Ext.id(hd2));
+ }
+ this.scroll = false;
+};
+Ext.extend(Ext.grid.HeaderDragZone, Ext.dd.DragZone, {
+ maxDragWidth: 120,
+ getDragData : function(e){
+ var t = Ext.lib.Event.getTarget(e);
+ var h = this.view.findHeaderCell(t);
+ if(h){
+ return {ddel: h.firstChild, header:h};
+ }
+ return false;
+ },
+
+ onInitDrag : function(e){
+ this.view.headersDisabled = true;
+ var clone = this.dragData.ddel.cloneNode(true);
+ clone.id = Ext.id();
+ clone.style.width = Math.min(this.dragData.header.offsetWidth,this.maxDragWidth) + "px";
+ this.proxy.update(clone);
+ return true;
+ },
+
+ afterValidDrop : function(){
+ var v = this.view;
+ setTimeout(function(){
+ v.headersDisabled = false;
+ }, 50);
+ },
+
+ afterInvalidDrop : function(){
+ var v = this.view;
+ setTimeout(function(){
+ v.headersDisabled = false;
+ }, 50);
+ }
+});
+
+// private
+// This is a support class used internally by the Grid components
+Ext.grid.HeaderDropZone = function(grid, hd, hd2){
+ this.grid = grid;
+ this.view = grid.getView();
+ // split the proxies so they don't interfere with mouse events
+ this.proxyTop = Ext.DomHelper.append(document.body, {
+ cls:"col-move-top", html:" "
+ }, true);
+ this.proxyBottom = Ext.DomHelper.append(document.body, {
+ cls:"col-move-bottom", html:" "
+ }, true);
+ this.proxyTop.hide = this.proxyBottom.hide = function(){
+ this.setLeftTop(-100,-100);
+ this.setStyle("visibility", "hidden");
+ };
+ this.ddGroup = "gridHeader" + this.grid.getGridEl().id;
+ // temporarily disabled
+ //Ext.dd.ScrollManager.register(this.view.scroller.dom);
+ Ext.grid.HeaderDropZone.superclass.constructor.call(this, grid.getGridEl().dom);
+};
+Ext.extend(Ext.grid.HeaderDropZone, Ext.dd.DropZone, {
+ proxyOffsets : [-4, -9],
+ fly: Ext.Element.fly,
+
+ getTargetFromEvent : function(e){
+ var t = Ext.lib.Event.getTarget(e);
+ var cindex = this.view.findCellIndex(t);
+ if(cindex !== false){
+ return this.view.getHeaderCell(cindex);
+ }
+ },
+
+ nextVisible : function(h){
+ var v = this.view, cm = this.grid.colModel;
+ h = h.nextSibling;
+ while(h){
+ if(!cm.isHidden(v.getCellIndex(h))){
+ return h;
+ }
+ h = h.nextSibling;
+ }
+ return null;
+ },
+
+ prevVisible : function(h){
+ var v = this.view, cm = this.grid.colModel;
+ h = h.prevSibling;
+ while(h){
+ if(!cm.isHidden(v.getCellIndex(h))){
+ return h;
+ }
+ h = h.prevSibling;
+ }
+ return null;
+ },
+
+ positionIndicator : function(h, n, e){
+ var x = Ext.lib.Event.getPageX(e);
+ var r = Ext.lib.Dom.getRegion(n.firstChild);
+ var px, pt, py = r.top + this.proxyOffsets[1];
+ if((r.right - x) <= (r.right-r.left)/2){
+ px = r.right+this.view.borderWidth;
+ pt = "after";
+ }else{
+ px = r.left;
+ pt = "before";
+ }
+
+ if(this.grid.colModel.isFixed(this.view.getCellIndex(n))){
+ return false;
+ }
+
+ px += this.proxyOffsets[0];
+ this.proxyTop.setLeftTop(px, py);
+ this.proxyTop.show();
+ if(!this.bottomOffset){
+ this.bottomOffset = this.view.mainHd.getHeight();
+ }
+ this.proxyBottom.setLeftTop(px, py+this.proxyTop.dom.offsetHeight+this.bottomOffset);
+ this.proxyBottom.show();
+ return pt;
+ },
+
+ onNodeEnter : function(n, dd, e, data){
+ if(data.header != n){
+ this.positionIndicator(data.header, n, e);
+ }
+ },
+
+ onNodeOver : function(n, dd, e, data){
+ var result = false;
+ if(data.header != n){
+ result = this.positionIndicator(data.header, n, e);
+ }
+ if(!result){
+ this.proxyTop.hide();
+ this.proxyBottom.hide();
+ }
+ return result ? this.dropAllowed : this.dropNotAllowed;
+ },
+
+ onNodeOut : function(n, dd, e, data){
+ this.proxyTop.hide();
+ this.proxyBottom.hide();
+ },
+
+ onNodeDrop : function(n, dd, e, data){
+ var h = data.header;
+ if(h != n){
+ var cm = this.grid.colModel;
+ var x = Ext.lib.Event.getPageX(e);
+ var r = Ext.lib.Dom.getRegion(n.firstChild);
+ var pt = (r.right - x) <= ((r.right-r.left)/2) ? "after" : "before";
+ var oldIndex = this.view.getCellIndex(h);
+ var newIndex = this.view.getCellIndex(n);
+ if(pt == "after"){
+ newIndex++;
+ }
+ if(oldIndex < newIndex){
+ newIndex--;
+ }
+ cm.moveColumn(oldIndex, newIndex);
+ this.grid.fireEvent("columnmove", oldIndex, newIndex);
+ return true;
+ }
+ return false;
+ }
+});
+
+
+Ext.grid.GridView.ColumnDragZone = function(grid, hd){
+ Ext.grid.GridView.ColumnDragZone.superclass.constructor.call(this, grid, hd, null);
+ this.proxy.el.addClass('x-grid3-col-dd');
+};
+
+Ext.extend(Ext.grid.GridView.ColumnDragZone, Ext.grid.HeaderDragZone, {
+ handleMouseDown : function(e){
+
+ },
+
+ callHandleMouseDown : function(e){
+ Ext.grid.GridView.ColumnDragZone.superclass.handleMouseDown.call(this, e);
+ }
+});
+
+
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