What steps will reproduce the problem?
Either:
1. Modify goog/demos/graphics/events.html to create a new CanvasGraphics object
rather than calling goog.graphics.createGraphics()
or
2. Run the demo page on a mobile device
or
3. Modify goog.grahpics.createGraphics() to always return a CanvasGraphics
object rather than an SvgGraphics object
What is the expected output? What do you see instead?
Running the demo after any of the above changes should produce three ellipses
with mouse over/out events bound to them all. Events are logged as they are
triggered on the right side of the screen.
Instead of that, no canvas elements show up as the javascript encounters and
error on load.
On line 89 of demo/graphics/events.html the code breaks when trying to add the
event listener to a new CanvasEllipseElement. The problem is the "element_"
parameter of the object is null but the goog.graphics.Element.addEventListener
function tries to add a new event listener using "element_" which in turn fails
due to it being null.
So, in the situation that no code is modified, this error will not show up on a
desktop as createGraphics() will always return an SvgGraphics object which
handles events fine. It is only on a mobile device that createGraphics()
returns a CanvasGraphics object and this starts to fail.
This may all be a moot point if no further development is being made on the
graphics library after depreciation.
What version of the product are you using? On what operating system?
Google closure library pulled from repository mid-October. Mixture of systems
(Firefox/Chrome on Linux, plus BB10 and Andriod 4.2)
Please provide any additional information below.
Note: we cannot accept patches without the contributor license agreement
being signed. See http://code.google.com/p/closure-
library/wiki/Contributors for more info.
Original issue reported on code.google.com by david.qu...@gmail.com on 20 Nov 2013 at 8:41
Original issue reported on code.google.com by
david.qu...@gmail.comon 20 Nov 2013 at 8:41