[tabs] WebView as a Tab child does not work reliably and sometimes crashes

[Timo Eskola]

I tried to use WebView in Tabs, but it does not work as expected.

The example below starts nicely with qmlscene. Flicking between tab 1 and tab 2 is also fine. If I flick to tab 3 and back to tab 1, the WebView has empty page. Usally qmlscene crashes after a while.

import QtQuick 2.0
import QtWebKit 3.0
import Ubuntu.Components 0.1

MainView {
    id: mainView
    width: units.gu(45)
    height: units.gu(80)

    Tabs {
        id: tabs
        anchors.fill: parent
        ItemStyle.class: "new-tabs"
        Tab {
            title: "tab 1"
            autoHideTabBar: false
            page: WebView {
                id: webView
                anchors.fill: parent
                url: "http://www.ubuntu.com"
            }
            ProgressBar {
                anchors.left: parent.left
                anchors.right: parent.right
                anchors.bottom: parent.bottom
                minimumValue: 0
                maximumValue: 100
                value: webView.loadProgress
                visible: value < 100
            }
        }
        Tab {
            title: "tab 2"
            page: Text {
                text: "This is the second tab."
                anchors.margins: units.gu(1)
            }
        }
        Tab {
            title: "tab 3"
            page: Text {
                text: "This is the third tab."
                anchors.margins: units.gu(1)
            }
        }
        Tab {
            title: "tab 4"
            page: Text {
                text: "This is the fourth tab."
                anchors.margins: units.gu(1)
            }
        }
    }
}

[Cris Dywan (kalikiana)]

I've found WebView to be very sensitive to sizing in general. In the attached case, the WebView only shows up if width and height are given explicitly - anchors are not available in a Row.

[Tim Peeters (tpeeters)]

Fixed in https://code.launchpad.net/~tpeeters/ubuntu-ui-toolkit/tabfix/+merge/161902

[Tim Peeters (tpeeters)]

Note that if you embed the WebView inside a Page { }, then the auto-hiding header will work well together with the WebView contents

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:ubuntu-ui-toolkit at revision 480, scheduled for release in ubuntu-ui-toolkit, milestone Unknown

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-ui-toolkit - 0.1.46daily13.06.05.1-0ubuntu1

---------------
ubuntu-ui-toolkit (0.1.46daily13.06.05.1-0ubuntu1) saucy; urgency=low

  [ Zoltán Balogh ]
  * update the example app for the latest UI Toolkit.
  * A simple app to check few locales.
  * Add qttools5-dev-tools to build dependencies to provide
    qhelpgenerator for creating QtC help files from documentation.
  * Build documentation and publish the qch file.
  * Offer symlinks for qmlscene via 'qmlrunner' package. See package
    description for usage instructions. (LP: #1155634). (LP: #1155634)

  [ Loïc Molinari ]
  * [UbuntuShape] Correctly stored the current material. (LP: #1132771)
  * [UbuntuShape] Ensured the texture is available in updatePaintNode().
    (LP: #1171437)

  [ Kaleo ]
  * QML_IMPORT_PATH is deprecated for QtQuick 2.0. Switch to
    QML2_IMPORT_PATH.
  * Added syntax description for CHANGES file in CHANGES.syntax.
  * UCScalingImageProvider: respect 'requestedSize' parameter. That
    ensures that the 'sourceSize' property of Image is respected even
    when the toolkit automatically scales the asset for the device. (LP:
    #1130120)
  * Added documentation for bitmap suffixes in the resolution
    independence page. (LP: #1092051)
  * Revamped component showcase now called 'Ubuntu UI Toolkit Gallery'.
    Works on Ubuntu Touch. (LP: #1130603)
  * Benchmarks for time critical components.
  * Added ListItem.ValueSelector example. Fixed incorrect 'Multi value'
    label. (LP: #1172663)
  * Toolkit Gallery: added examples for Sheets.
  * Automatic rotation of applications depending on the device
    orientation. For applications that are using MainView, they opt-in
    by setting 'automaticOrientation' to true. New component
    OrientationHelper for applications that do not use MainView but
    still need an easy way to automatically rotate.
  * UbuntuShape: fix slight distortion of image when set. This
    distortion was quite disturbing when the content has text in it, as
    it is often the case in Popups and Popovers. (LP: #1170878)
  * Use standard animation ubuntu snap beat for popups fade in.
  * Removed unnecessary clipping from Tabs, Popover, Dialog and
    MainView.
  * All ListItems: set default contents right and left margins to 2 gu.
    ListItems Base, Standard and ValueSelector: deprecated private
    properties __leftIconMargin and __rightIconMargin IconVisual
    (private): removed properties leftIconMargin and rightIconMargin
    Standard: removed ugly progression highlight background when there
    is no split.
  * ListItems: constrain size of the icon by default. Deprecated private
    properties __iconWidth and __iconHeight.
  * Ubuntu UI Toolkit Gallery tweaks: - Made window wider and left
    column the width of the phone: 40gu. - Removed 'slider.' from Slider
    example's labels. - Renamed 'Switches' into 'Toggles'. Renamed
    'Progress Bars' into 'Progress and activity'. - Use resolution
    independence for navigation example screenshots.
  * Support source with quotes in .sci files. (LP: #1080719)
  * Reverted unjustified changes to ubuntu-ui-toolkit-gallery.desktop.
  * Popover: simplified com...

[Rolf Leggewie (r0lf)]

raring has seen the end of its life and is no longer receiving any updates. Marking the raring task for this ticket as "Won't Fix".