[PIVOT-954] Double click in empty TextArea causes exception

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.4, 2.1
• Fix Version/s: 2.1, 2.0.5
• Component/s: wtk
• Labels: doubleclick textarea
• Environment: All
• Assignee: Roger Lee Whitcomb
• Reporter: Roger Lee Whitcomb
• Created: 18/Jul/14 22:40
• Updated: 17/Apr/22 17:33
• Resolved: 18/Jul/14 22:53

Description

Start with an empty TextArea, then double click anywhere (which normally would select the current word), there will be basically an assertion error from here:
java.lang.IndexOutOfBoundsException: index: index (-1) < min (0)
at org.apache.pivot.wtk.Component.indexBoundsCheck(Component.java:2861)
at org.apache.pivot.wtk.TextArea.getCharacterAt(TextArea.java:904)
at org.apache.pivot.wtk.skin.TextAreaSkin.selectSpan(TextAreaSkin.java:969)
at org.apache.pivot.wtk.skin.TextAreaSkin.mouseClick(TextAreaSkin.java:1023)

The underlying problem is trying to get the character at offset -1 in the document.

It could also occur in any document in which the first line is empty, and trying to double click there (with a slightly different stack trace):
java.lang.IndexOutOfBoundsException: index: index (-1) < min (0)
at org.apache.pivot.wtk.Component.indexBoundsCheck(Component.java:2861)
at org.apache.pivot.wtk.TextArea.getCharacterAt(TextArea.java:904)
at org.apache.pivot.wtk.skin.TextAreaSkin.selectSpan(TextAreaSkin.java:974)
at org.apache.pivot.wtk.skin.TextAreaSkin.mouseClick(TextAreaSkin.java:1023)

(This is from the "trunk" version).