[IE] tableresize usability

[Garry Yao]

The changes of [5747] introduced the following problems in IE:

1. Column resizer's position doesn't accurately reflect cell spaces, few pixels offset makes the resizer always appear before mouse is actually moved into;
2. The cursor shape is inconsistent with other browsers, even composed of two sharps when moving along the visible region.

[Garry Yao]

Under IE7 the column pillar appears without clicking down mouse button.

[Sa'ar Zac Elias]

I can reproduce first & second TCs when gripping the resizer from near the cell border (could be done easily with bigger cellpadding value).

[Garry Yao]

By back-tracing I understand that the issue was originated from #5890, affects only below IE8.

[Garry Yao]

Fixed with [6322].

[Wiktor Walc]

6615.patch caused #7081 and #7083

[Garry Yao]

We decide to revert the fix with [6388].

[Wiktor Walc]

The patch from #7083 seems to fix both reported problems, needs deeper testing though.

[Sa'ar Zac Elias]

IE7:
Create a table, put contents in first and second cells and select their contents using the mouse. Now click on the border between them and drag it a bit. Once one releases the grip, the selection is lost.

[Garry Yao]

New patch addresses the selection lost issue.

[Sa'ar Zac Elias]

IE7 mode, create a table and put a list in the rightmost cell in the top row. Click and drag the border between the cells. Note that the resizer does not appear correctly.

[Sa'ar Zac Elias]

IE7 is still broken:

• Put the cursor at the top-rightmost cell. Click on the list button.
• Without changing the selection, hover over the border.
  • See that helper does not appear.
• Now switch to source and then back to wysiwyg.
• Hover over the middle border.
  • Note that the left side is "disappearing", while it's still intact in source.

Another issue: do as described in comment:11. Note that the focus is lost.