A previous fix (5f9ea3) inadvertently broke the progress bar by
converting to the wrong data type. (See issue #561 / PR #609).
While checking the code I realized the problem occurred primarily
because we weren't checking the validity of the values closer to the
source. Doing so alleviates the need to check elsewhere.
In the hope of inspiring a more systematic approach, a new uiParse()
utility function has been added to curb the further growth of toXxx()
functions that exist solely to validate user input.
There is no doubt room for improvement, both on the end of the new
uiParse() function as well as the spot where it is used. Ideally, the
data that comes out of the model should already be 'safe', but since
this is a bugfix for a bugfix I want to keep waves to a minimum.
This commit fixes issue #652.
See issue #561.
The problem appears to be a due to a combination of factors, such as:
- Python does not automatically convert an empty/blank variable to the
integer zero (0)
- Default goal value is empty/blank for a new Text (scene)
- Asynchronous events can occur such that the change in the Outline
pane of a new Text (scene) goal from empty/blank to a value is not
saved to the data model prior to the update event in the Editor pane
accessing the model value for the word count progress display.
Steps to Reproduce:
1. Start manuskript and create new project (no template).
2. Select **Outline** pane.
3. Click "Text Plus" icon to create a text (default name "New")
4. Select **Editor** pane.
5. Click on **New** to display empty text.
6. Select **Outline** pane.
7. Double-click the empty area on **New** line under title **Goal**,
type in "300", and press **Enter**.
Note that manuskript crashes with a segmentation fault.
Work around the crash by using the already existing manuskript
function toInt() which handles conversion of empty/blank values to
integer value zero (0).
