ListItem calls onClicked handler even when press is cancelled

[Michael Zanetti]

To reproduce:

* Run the attached qml file
* press the mouse/finger on the ListItem in the center (don't release)
* drag the mouse/finger outside the listitem
* release

=> you'll see a "Clicked!!!" message printed to stdout

expected: when the user decides not to click an item and cancels it by moving outside the mouse area to release, the clicked signal should not be emitted.

This is also what the QML MouseArea does. From it's docs: "A click is defined as a press followed by a release, both inside the MouseArea (pressing, moving outside the MouseArea, and then moving back inside and releasing is also considered a click)."

The current behavior causes some nasty usability issues in some apps as the user is used to be able to cancel a click this way, but ListItems behave differently than all the other elements. I.e. the Ubuntu Button behaves the same as the MouseArea etc.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-ui-toolkit - 1.3.1872+16.04.20160308-0ubuntu1

---------------
ubuntu-ui-toolkit (1.3.1872+16.04.20160308-0ubuntu1) xenial; urgency=medium

  [ Timo Jyrinki ]
  * Fix gles unit test skipping.
  * Add s390x to the unit test skipping architectures
  * UITK test plan - wily -> xenial. Fixes LP: #1544490

  [ Christian Dywan ]
  * Print errors when QuickUtils fails to create a component.
  * unit tests shouldn't use deprecated Dialog.callera
  * Correctly count only test case results. The result= value is used in suites
    and results.
  * Skip tst_pagehead_visible flakes on non-arm. Fixes LP: #1534651
  * Skip flaky tst_mousefilterTest::doubleClicked. Fixes LP: #1542215
  * Suppress click signal if releasing outside of ListItem. Fixes LP: #1541148.
  * Use gdb in runtest.sh to produce backtraces.
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  * Only use Maliit when enabled explicitly in the environment

  [ Oliver Tilloy ]
  * Do not try to assign to non-existent property "activeFocusOnPress".
    Fixes LP: #1532953
  * Bubble up ESC key press event if there is no popover to close.
    Fixes LP: #1546627

  [ Loïc Molinari ]
  * Added private items and nodes for the new component styles.
    Fixes LP: #1523836
  * Made use of new private Frame item for the focusing.
  * Fixed performance monitor crash because of a NULL timer pointer dereference.
    Fixes LP: #1546986
  * Fixed performance monitor dangling pointer crash. Fixes LP: #1546984
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    Fixes LP: #1546546
  * Added a workaround to prevent a crash while changing the QPA scale factor.

  [ Florian Boucault ]
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    Fixes LP: #1535819
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  [ Tim Peeters ]
  * Support scrolling in ListViews with horizontal orientation to the
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  * Add background to AppHeader and remove contents clipping from MainView.
    Fixes LP: #1531016, LP: #1531457.
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 ...