2010-07-13 Francois Chouinard <fchouinard@gmail.com> Contributions for Bug315889...

2010-07-13  Francois Chouinard  <fchouinard@gmail.com>  Contributions for Bug315889 and Bug316347

	* src/org/eclipse/linuxtools/lttng/ui/views/controlflow/ControlFlowView.java: Added null pointer checks
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/ChildrenHistogramCanvas.java: Displaced funtionality from parent class
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvasControlListener.java: Displaced the recentering code
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramCanvasMouseListener.java: Added null pointer checks
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramContent.java: Removed a duplicate function call
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramView.java: GUI reorganisation, simplification and some related code improvements
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvas.java: Added event listeners
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvasControlListener.java: New file
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/ParentHistogramCanvasPaintListener.java: Cosmetic change.
	* src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeTextGroup.java: Updates of text parts of the view