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Bug 272686

Summary:	[Table] Javascript error during table disposal
Product:	[RT] RAP	Reporter:	Ralf Sternberg <rsternberg>
Component:	RWT	Assignee:	Project Inbox <rap-inbox>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P3	CC:	ivan
Version:	1.2
Target Milestone:	1.2 M7
Hardware:	All
OS:	All
Whiteboard:

Description Ralf Sternberg

2009-04-17 09:00:45 EDT

Observed using FF 3.0.8 / Linux

Steps to reproduce:
* Open the controls demo
* Change to the table tab
* Check the NO_SCROLL checkbox
* Uncheck the NO_SCROLL check box again
* Reload

An error message occurs: "WARN: Could not dispose: [object qx.ui.layout.CanvasLayout]:  TypeError: columns[i] is null".

Might be a timing issue, so try several times.

Some quick analysis revealed that the error occurs in the method getColumnsWidth in Table.js.

Comment 1 Ivan Furnadjiev

2009-04-21 05:18:26 EDT

When the table is disposed from within the RAP code, first the table is disposed and after that the table columns. This ensures that the Table.getDisposed() returns true in TableColumn.js and TableItem.js destruct method and the table is not re-rendered. When the browser refresh button is pressed, the TableColumn#destruct is called first, Table.getDisposed() returns false and table re-rendering is triggered. To prevent this the qx.core.Object.inGlobalDispose() is used in TableColumn and TableItem destruct method.