[CHUKWA-738] Dragging widget over iframe cause mouse event to hang

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3.0, 0.4.0, 0.5.0, 0.6.0, 0.7.0
• Component/s: User Interface
• Assignee: Eric Yang
• Reporter: Eric Yang
• Created: 26/Feb/15 05:24
• Updated: 29/May/15 21:00
• Resolved: 28/Feb/15 17:43

Description

Both Webkit and Firefox based browser are honoring mouse events inside iframe. However, if a widget is in a dragging event, and mouse cursor pass through another iframe. Mouse event get captured by the background iframe and cause the dragging widget to stall. One trick was to overlay an invisible DIV with higher zIndex to prevent the background iframe from capturing mouse dragging event of the transitioning widget. This was implemented several years back for firefox only, but it looks like the same trick needs to apply to all modern day browser. This JIRA is to remove the firefox specific check and always overlay the invisible iframe when mouse is dragging over another iframe.