Review Request: Prevent activation of tabs opened in the background

[Commit Hook]

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This review has been submitted with commit f1180645daa72b182f59a9b4099cb4612c73ea96 by Dawit Alemayehu to branch KDE/4.9.

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On Oct. 30, 2012, 7:49 p.m., Dawit Alemayehu wrote:
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> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/107048/
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> (Updated Oct. 30, 2012, 7:49 p.m.)
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> 
> Review request for KDE Base Apps and David Faure.
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> Description
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> The attached patch is an attempt to fix the bug where opening certain types of documents in a background tab results in the new tab being activated inadvertently.
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> The issue can be reproduced by simply attempting to open a PDF document using either the MMB or the CTRL+LMB button in Konqueror. If you have a local PDF file simply navigate to the location of the file and click on it using the MMB. Otherwise, see the aforementioned bug report for a site with PDF links in it. If the "Open new tabs in background" option is checked when you clicked on the PDF document, then the PDF document is opened embedded in Konqueror tab in the background. However, this background tab should not be activated when the aforementioned option is enabled. 
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> Unfortunately, in the currently implementation the background tab will get activated if the part used to handle the resource (PDF file in this case) issues a FocusIn event, for example by calling setFocus. That is because KPart::PartManager installs an event filter on all the KParts it manages, listens for FocusIn events, and invokes KParts::PartManager::setActivatePart.
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> This addresses bug 306417.
>     http://bugs.kde.org/show_bug.cgi?id=306417
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> Diffs
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>   konqueror/src/konqviewmanager.cpp c8e3cb0 
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> Diff: http://git.reviewboard.kde.org/r/107048/diff/
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> Testing
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> - Tested opening a PDF file when the "Open new tabs in background" option is checked.
> - Tested opening a PDF file when the "Open new tabs in background" option is UNchecked.
> - Tested opening a PDF link from a webpage using both the MMB and CTRL+LMB.
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> Thanks,
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> Dawit Alemayehu
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