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    <p>Got a dirty solution myself. I added 2 lines in collapseNode and expandNode. </p> <pre><code>expandNode : function(rc) { return this.each(function(){ if(!this.grid || !this.p.treeGrid) {return;} var expanded = this.p.treeReader.expanded_field, parent = this.p.treeReader.parent_id_field, loaded = this.p.treeReader.loaded, level = this.p.treeReader.level_field, lft = this.p.treeReader.left_field, rgt = this.p.treeReader.right_field; if(!rc[expanded]) { var id = $.jgrid.getAccessor(rc,this.p.localReader.id); var rc1 = $("#"+$.jgrid.jqID(id),this.grid.bDiv)[0]; var position = this.p._index[id]; if( $(this).jqGrid("isNodeLoaded",this.p.data[position]) ) { rc[expanded] = true; this.p.data[position][expanded] = true; // &lt;--- add this line in jqgrid.src.js $("div.treeclick",rc1).removeClass(this.p.treeIcons.plus+" tree-plus").addClass(this.p.treeIcons.minus+" tree-minus"); } else if (!this.grid.hDiv.loading) { rc[expanded] = true; $("div.treeclick",rc1).removeClass(this.p.treeIcons.plus+" tree-plus").addClass(this.p.treeIcons.minus+" tree-minus"); this.p.treeANode = rc1.rowIndex; this.p.datatype = this.p.treedatatype; if(this.p.treeGridModel == 'nested') { $(this).jqGrid("setGridParam",{postData:{nodeid:id,n_left:rc[lft],n_right:rc[rgt],n_level:rc[level]}}); } else { $(this).jqGrid("setGridParam",{postData:{nodeid:id,parentid:rc[parent],n_level:rc[level]}} ); } $(this).trigger("reloadGrid"); rc[loaded] = true; if(this.p.treeGridModel == 'nested') { $(this).jqGrid("setGridParam",{postData:{nodeid:'',n_left:'',n_right:'',n_level:''}}); } else { $(this).jqGrid("setGridParam",{postData:{nodeid:'',parentid:'',n_level:''}}); } } } }); }, collapseNode : function(rc) { return this.each(function(){ if(!this.grid || !this.p.treeGrid) {return;} var expanded = this.p.treeReader.expanded_field; if(rc[expanded]) { rc[expanded] = false; var id = $.jgrid.getAccessor(rc,this.p.localReader.id); this.p.data[this.p._index[id]][expanded] = false; // &lt;--- add this line in jqgrid.src.js var rc1 = $("#"+$.jgrid.jqID(id),this.grid.bDiv)[0]; $("div.treeclick",rc1).removeClass(this.p.treeIcons.minus+" tree-minus").addClass(this.p.treeIcons.plus+" tree-plus"); } }); }, </code></pre> <p>BTW, don't ask me why we need these 2 lines. I don't know myself. It's like a housewife fixed a short circuit by just matching the wires with colors. But, she might not know what short circuit means.</p>
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