ExtJs 4.2.3 Column Resize Error

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2. 
   
   
   

   
   

   
   

   ExtJs 4.2.3 Column Resize Error

   
   

   
   

   ExtJs 4.2.3 Column Resize Error

   
   
   
   

   
   

   Ext version 4.2.3
   

   Problem:
   
   When try resize column in Tree with many columns it may be collapsed.

   
   

   It occurs because in method getConstrainRegionof class Ext.grid.plugin.HeaderResizer variable maxColWidth compute as

   
   

   
   

   Code:

   
   

   
   maxColWidth = me.headerCt.getWidth() - me.headerCt.visibleColumnManager.getColumns().length * me.minColWidth;
   

   
   And for Tree (or Grid) with many columns it became negative.
   

   Some solutions may be:
   

   
   

   
   
   1. Check if maxColWidth < 0 and do not allow resize,
   
   
   2. use me.maxColWith instead of computed (such in previous version).
   
   

   
   

   
   

   
   

   
   

   
   

   
   
   
   

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ExtJs 4.2.3 Column Resize Error