Make sure that the sort order is correct after renaming
KFileItemModel::setData() should not only cause a resorting when the
sort role is changed. The name is always used as a fallback if the sort
role of multiple files is equal, therefore, renaming a file can change
the correct order of the files even if the files are not sorted by
"name".
Do not store default values in QHash<QByteArray, QVariant>
Storing values which are equivalent to default-constructed QVariants
does not make much sense because QHash::value returns the same value
even if the corresponding key is not found in the hash.
This commit reduces Dolphin's memory consumption in large folders by
up to 7.3% (tested a folder with 100,000 files in Details View) and
reduces the time required for loading a folder.
Fix slow scrolling when hidden files or symbolic links are shown
The problem was that we drawed the overlays using KIconLoader, which can
be very slow, every time an item appeared on the screen. This commit
makes sure that not only the icon, but the icon including overlays is
cached in QPixmapCache. Therefore, the overlay drawing is done just once
for each icon+overlays combination.
For previews, the overlay drawing is done in KFileItemModelRolesUpdater
just after the preview is received.
The problem was that items are removed from m_visibleGroups while
a QMutableHashIterator iterates over this hash, such that the iterator
can become invalid. The solution is to use a QHashIterator instead,
which takes a copy of the hash. Therefore, it is not affected if
m_visibleGroups is modified in any way.
Sometimes when items are renamed, the order of the items in the
directory is not affected, but the groups still change (simple example:
with files a, b, c, e, rename "c" to "d"). At the moment, we always emit
the itemsMoved signal in such a case to make sure that the view is
updated. However, it would be preferable if this signal was not emitted
because it can trigger some quite expensive operations which are not
needed at all.
This commit introduces a new signal groupsChanged and modifies
KFileItemModel and KItemListView such that these classes make use of it.
Some unit tests for the new functionality are included as well.
Fix possible out of range error inKItemListSizeHintResolver::itemsMoved
The function assumes implicitly that the moved range always starts with
the index 0. This is indeed the case at the moment, but it might make
sense to change that in the future. This commit prevents that we get an
out of range problem then.
Thanks to Emmanuel Pescosta for finding this problem, see
https://git.reviewboard.kde.org/r/111808/
Do not allow that panels are dragged out of the main window
This feature might have been useful in some cases, but it's most likely
not useful enough to justify that we accept the bugs that it causes.
Even though some of these bugs are not Dolphin's fault at all, they
cause serious problems for users in some cases.
I'm pushing this commit to master only because I prefer to not push such
behavior changes to 4.11 at this point of the release cycle.
Don't let HTML-like filenames be interpreted as HTML strings
So that filenames that look like HTML don't get fancy-formatted when
we show info about them (i.e. on hover)
This patch fixes the same issue in two places:
- dolphin, by setting Qt::PlainText on the status bar's label
- konqueror, by escaping setStatusBarText strings emitted by
DolphinPart
Fix maximum value for scroll bar when deleting items in Details View
The problem was that the view heigt minus the header height was
subtracted from maximumScrollOffset() to determine the maximum value
of the scroll offset of the top of the view.
However, the top of the view is the part that is hiden behind the
header. Therefore, the full view height must be subtracted from
maximumScrollOffset.
The remaining bits of bug 319951 were fixed by other recent commits.
Thanks to Emmanuel Pescosta for helping to track down the problem!
Prevent that removing items can cause icons to overlap
When items are removed, new items may become visible because of that.
This includes
(a) Items *behind* the removed range. KItemListView may try to create
their widgets at their "imaginary" old positions and move them to
the new position with an animation.
(b) Items *before* the removed range, if the deletion causes the view
to scroll up. In that case, the "imaginary" old position and the new
position was equal, but KItemListView still tried to determine the
"old" position by adding the number of removed items to the index.
The result was that the widgets were created at completely wrong
positions, and no animation was started to fix this.
Thanks to Emmanuel for helping to find the cause of this bug!
Make sure that widgets are initialized when changing the view mode
The problem was that DolphinItemListView overrides the virtual function
onItemLayoutChanged() without calling the base class implementation.
Therefore, KStandardItemListView::updateLayoutOfVisibleItems(), which
calls initializeItemListWidget(), is never called.
This patch refactors the "change item layout"/"supports item expanding"
code a bit to make it more robust and fix the problem that the view
looks "messed up" when switching from Details View without expandable
folders to Icons View.
I'm only pushing this patch to master (going to be KDE 4.12).
The patch is a bit too intrusive for the KDE/4.11 branch for my taste
at this point of the release cycle, and the bug is not a real
showstopper. If it works well in master, one could consider backporting
it to a 4.11.x bug fix release.
Thanks to Emmanuel Pescosta for helping to analyze this issue.
Do not try to smooth-scroll past the end of the view
KItemListSmoothScroller::scrollTo(qreal position) did not check if
'position' is a valid value. Even if the view is scrolled to the bottom
already, it tried to scroll further and activated "smooth scrolling"
when the mouse wheel is used. Because it never got out of the "smooth
scrolling" state then, it got confused when changing the directory, and
restoring the correct scroll offset could fail.
Fix "truncated header" in Details View with non-Oxygen styles
The code for painting the "empty header" was inconsistent with the
headers of the other columns, which is probably the reason why the other
styles got confused
a) No QStyleOptionHeader is used
b) Even if an empty header must be drawn, the last column is drawn with
the option QStyleOptionHeader::End.
According to Christoph, it still doesn't work with the Skulpture style,
but it seems that the patch does at least not make things worse.
Overwrite the changed role value with an empty QVariant,
because the nepomuk roles provider doesn't overwrite it when the property
value list is empty.
Load unknown icons for items just before showing items in the view
Rather than loading many icons (without full mime type determination)
in advance, we make sure that an item has an icon just before it is
shown in the view. This makes sure that no "unknown" icons are shown
unnecessarily, and saves some resources.
Fix O(N^2) complexity issue in KItemListView::slotItemsRemoved()
If many item ranges are removed, KItemListView::slotItemsRemoved()
could take very long because it looped over all items after the first
removed one for every removed range, even if most of these items are
not visible at all.
This commit improves this by just looping over the visible items (whose
number is limited by the window size) for each range.
Make sure that KItemListSizeHintResolver is always consistent
This was the root cause of bug 317827. The assert tried to make sure
that we never access KItemListSizeHintResolver from
KItemListViewLayouter inside the loop over the item ranges. This would
be dangerous because it might be in an inconsistent state - the removed
item ranges were removed step by step, so accessing the item size hints
before the operation was finished could lead to wrong results.
The solution is to insert/remove all item ranges immediately. A nice
side effect is that there are no sources of O(N^2) complexity in
KItemListSizeHintResolver any more if many item ranges are
inserted/removed.
Fix crash when dropping URLs on the URL navigator's drop down menus
The problem was that the files were copied/moved inside the nested event
loop of the drag, which caused problems if the "File exists" dialog was
shown.
The solution is to make the copy/move operation delayed, such that it is
executed in the main event loop.
Note that dropping files on these menus does apparently not work at the
moment when using the Oxygen style (see bug 310016).
Replace QList by QVector if the elements are larger than a pointer
If the elements are larger than a pointer, QList does not store the
elements themselves, but pointers to them in a contiguous block of
memory. This wastes quite a bit of memory. This can be prevented easily
by using QVector instead.
Since m_pendingItemsToInsert is a list of pointers now (and not a list
of KFileItems, as in the 4.10 branch), we have to delete all pointers
when clearing or destroying the model.
I think that no review request is necessary for this small and obvious
change.
Re-enable expandable folders for network top level folders (remote:/)
Added a hash table for target url to url mapping. So when the dir lister
sends us the target url as directory url, we can use the url mapping table
to get the right "Dolphin internal" directory url, which is the non-target url.
Fix the "dropped files are not selected" regression that has
recently been brought up and that have been caused by review 107351 / commit fd65a97b0787b23246c9392fdc34173fb604c9ca
Fix performance regression when loading folders in Details View
When using Details View, only insert all pending items immediately if
new items are inserted which might be children of a pending item. Fixes
the problem that inserting the items in multiple bunches slows down the
folder loading.
Note that the cause of the slowness when inserting in multiple bunches
is that KItemListSizeHintResolver needs O(N^2) time in the worst case
for inserting N items into a model with N existing ones.
Prevent possible infinite recursion in ViewProperties
If each directory can have its own view properties, and loadting the
.directory file fails in a directory, we have to load the global view
properties. However, if we try to do this by changing the "global view
properties setting" and loading the view properties for the same
directory again, we might get an infinite recursion if changing the
setting fails.
We now force a loading of the global view properties by constructing a
new ViewProperties object with an empty URL.
Thanks to Kurt Hindenburg for helping to debug this issue (which was
only reproducible on MacOS).
Vishesh Handa [Thu, 20 Jun 2013 18:39:15 +0000 (00:09 +0530)]
Dolphin: Do not try to connect to Nepomuk if it is not running
Each time one uses any of the Nepomuk classes, an attempt is made to
connect to the database. This slows down the application since
connecting to Nepomuk is not so cheap.
Allow renaming multiple files without number if extensions are different
Normally, we only allow renaming multiple files if the new file name
contains a contiguous sequence of '#' placeholders, which are then
replaced by numbers.
However, if all extensions are different, we can also rename the files
without such a placeholder because the original extension is preserved
when renaming.
This had been possible some time ago already. That this "accidental
feature" was lost was a side effect of the fix for bug 318942.
Try to do at least a "fast" icon loading for all items
If all icons for the visible items could be loaded in 200 ms, we
continue loading icons without mime type determination for all items
until the 200 ms are over. This reduces the risk that the user ever
sees "unknown" icons.
We try to determine "final" icons, i.e., icons with known mime type,
for 200 ms. If this does not succeed, we at least load "fast" icons,
i.e., load the icons without determining the mime type.
Prevent the selection rectangle from being reduced to 0px
width or 0px height, so the selected items can not be accidently
unselected when the rectangle width/height becomes 0px.
This patch changes two things about the way we handle the preview jobs:
(a) Rather than passing a KFileItemList to startPreviewJob(),
remembering the leftovers in the member variable
m_pendingPreviewItems and then starting a new preview job for
these, we append items that need a preview to this member, and let
startPreviewJob() take its input from there. This simplifies the
code greatly.
(b) To prevent that we start preview jobs with just one item and also
that the GUI is frozen too long by startPreviewJob(), we take the
following approach:
* If the mime type of the first pending item is known, the function
has probably been called by startUpdating(), which has determined
mime types for the visible items already. startUpdating() has
also blocked the GUI, so we just take all items at the beginning
of the list with known mime type, and do not do any expensive
mime type determination in startPreviewJob().
* If the mime type of the first pending item is unknown, the
function has probably been called by slotPreviewJobFinished(). In
that case, we can afford to block the GUI for a short while, so
we determine mime types for 200 ms.
Do not use fixed widths for the widgets in the status bar
This fixes the problem that the Dolphin window has a rather large
minimum size. A side effect of this was that splitting the view could
resize the window (because twice the minimum status bar width was
needed then).
Ensure that the "Sort by Type" setting is respected
Before this commit, switching from, e.g., "Sort by Name" to "Sort by
Type" sometimes had no effect until the view was refreshed. The problem
was that the re-sorting was triggered before the type information was
actually added to the model.
Do not rename files unexpectedly when changing the URL
This is the real fix now - note that the last commit 4de9a233642a62ee96bac6031340d3eea21f14f9 was actually the fix for bug
320823. Somehow, I have messed up the local branches in my git
respository clone - sorry for the confusion!
Do not rename files unexpectedly when changing the URL
If the role editor loses focus, it considers the current renaming
operation finished, and tells DolphinView to rename the file. This is a
problem when changing the directory, because the URL change happens
before DolphinView receives the signal, which results in a file in the
new directory being renamed unexpectedly.
The solution is to establish the connection to the
slotRoleEditingFinished signal only when the "rename inline" editor is
opened, and disconnect it when renaming is finished or canceled or the
URL changes.
Fix Bug 319119 - Dolphin doesn't notice when renaming failed
Change the data in the model before the real renaming is done by KonqOperations::rename(),
but when the rename operation fails, revert the data changes in the model.
I saw a runtime warning from QMetaObject::invokeMethod() that KJob* is
not a registered type. Since we don't use that argument in
slotPreviewJobFinished(KJob*) anyway, it's best to remove it.
KFileItemModelRolesUpdater: waste less ressources and fix some bugs
The main change in this commit is that we do not determine expensive
roles (like previews, mime types, etc) for all items, but only for the
visible ones and those close to the visible area or on the first and
the last page of the view.
This prevents that the CPU and hard drive are kept busy for quite some
time after entering a folder while all items are handled asynchronously.
There is one known problem at the moment: when sorting by "Type" or
another role that can be resolved by KFileItemModelRolesUpdater, the
icons of the visible items are sometimes not loaded while the sorting is
still in progress. I will try to fix this issue during the next few
days.
Weng Xuetian [Wed, 5 Jun 2013 21:07:31 +0000 (17:07 -0400)]
move focus to another view upon drop
When user drag and drop to another splitted view, the view will be activated,
thus if user close the split view, the view will be closed, while this is
usually the case when user copy file to remote/removable media.
Bug 196035 - middle clicking on archive files in dolphin does not open them in a new tab
When 'browse through archives' is enabled, open archive files
like folders on middle clicking, context menu -> new tab action
and context menu -> new window action.
KFileItemModel::insertItems(): guarantee O(N) run time complexity
This commit prevents repeated insertions of single items into the list
m_itemData, which shift all following items by one position and result
in O(N^2) worst case complexity for the entire function.
Moreover, the hash m_items is updated only for the items starting from
the first inserted/removed item to save some superfluous calculations
of hash values.
Do not reset the 'isExpanded' state when an expanded folder is refreshed
If an item is moved out of an expanded folder, the model receives the
dir lister's refreshItems signal for the folder. The method
retrieveData() then updates the folder's properties. This commit makes
sure that the 'isExpanded' state is not touched by retrieveData(). A
side-effect is that the 'isExpanded' role is not initialized to 'false',
but this does not matter because trying to read a non-existing role from
the QHash<QByteArray, QVariant> yields a default-constructed QVariant,
which evaluates to 'false'.
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