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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit4aed2c8219774f5d797760606b8489a92ddc5163 (patch)
tree3f8c130f7d269626bf6a9447407ef6c35954426a /kwin/activation.cpp
downloadtdebase-4aed2c8219774f5d797760606b8489a92ddc5163.tar.gz
tdebase-4aed2c8219774f5d797760606b8489a92ddc5163.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/*****************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+You can Freely distribute this program under the GNU General Public
+License. See the file "COPYING" for the exact licensing terms.
+******************************************************************/
+
+/*
+
+ This file contains things relevant to window activation and focus
+ stealing prevention.
+
+*/
+
+#include "client.h"
+#include "workspace.h"
+
+#include <fixx11h.h>
+#include <qpopupmenu.h>
+#include <kxerrorhandler.h>
+#include <kstartupinfo.h>
+#include <kstringhandler.h>
+#include <klocale.h>
+
+#include "notifications.h"
+#include "atoms.h"
+#include "group.h"
+#include "rules.h"
+
+extern Time qt_x_time;
+
+namespace KWinInternal
+{
+
+/*
+ Prevention of focus stealing:
+
+ KWin tries to prevent unwanted changes of focus, that would result
+ from mapping a new window. Also, some nasty applications may try
+ to force focus change even in cases when ICCCM 4.2.7 doesn't allow it
+ (e.g. they may try to activate their main window because the user
+ definitely "needs" to see something happened - misusing
+ of QWidget::setActiveWindow() may be such case).
+
+ There are 4 ways how a window may become active:
+ - the user changes the active window (e.g. focus follows mouse, clicking
+ on some window's titlebar) - the change of focus will
+ be done by KWin, so there's nothing to solve in this case
+ - the change of active window will be requested using the _NET_ACTIVE_WINDOW
+ message (handled in RootInfo::changeActiveWindow()) - such requests
+ will be obeyed, because this request is meant mainly for e.g. taskbar
+ asking the WM to change the active window as a result of some user action.
+ Normal applications should use this request only rarely in special cases.
+ See also below the discussion of _NET_ACTIVE_WINDOW_TRANSFER.
+ - the change of active window will be done by performing XSetInputFocus()
+ on a window that's not currently active. ICCCM 4.2.7 describes when
+ the application may perform change of input focus. In order to handle
+ misbehaving applications, KWin will try to detect focus changes to
+ windows that don't belong to currently active application, and restore
+ focus back to the currently active window, instead of activating the window
+ that got focus (unfortunately there's no way to FocusChangeRedirect similar
+ to e.g. SubstructureRedirect, so there will be short time when the focus
+ will be changed). The check itself that's done is
+ Workspace::allowClientActivation() (see below).
+ - a new window will be mapped - this is the most complicated case. If
+ the new window belongs to the currently active application, it may be safely
+ mapped on top and activated. The same if there's no active window,
+ or the active window is the desktop. These checks are done by
+ Workspace::allowClientActivation().
+ Following checks need to compare times. One time is the timestamp
+ of last user action in the currently active window, the other time is
+ the timestamp of the action that originally caused mapping of the new window
+ (e.g. when the application was started). If the first time is newer than
+ the second one, the window will not be activated, as that indicates
+ futher user actions took place after the action leading to this new
+ mapped window. This check is done by Workspace::allowClientActivation().
+ There are several ways how to get the timestamp of action that caused
+ the new mapped window (done in Client::readUserTimeMapTimestamp()) :
+ - the window may have the _NET_WM_USER_TIME property. This way
+ the application may either explicitly request that the window is not
+ activated (by using 0 timestamp), or the property contains the time
+ of last user action in the application.
+ - KWin itself tries to detect time of last user action in every window,
+ by watching KeyPress and ButtonPress events on windows. This way some
+ events may be missed (if they don't propagate to the toplevel window),
+ but it's good as a fallback for applications that don't provide
+ _NET_WM_USER_TIME, and missing some events may at most lead
+ to unwanted focus stealing.
+ - the timestamp may come from application startup notification.
+ Application startup notification, if it exists for the new mapped window,
+ should include time of the user action that caused it.
+ - if there's no timestamp available, it's checked whether the new window
+ belongs to some already running application - if yes, the timestamp
+ will be 0 (i.e. refuse activation)
+ - if the window is from session restored window, the timestamp will
+ be 0 too, unless this application was the active one at the time
+ when the session was saved, in which case the window will be
+ activated if there wasn't any user interaction since the time
+ KWin was started.
+ - as the last resort, the _KDE_NET_USER_CREATION_TIME timestamp
+ is used. For every toplevel window that is created (see CreateNotify
+ handling), this property is set to the at that time current time.
+ Since at this time it's known that the new window doesn't belong
+ to any existing application (better said, the application doesn't
+ have any other window mapped), it is either the very first window
+ of the application, or its the only window of the application
+ that was hidden before. The latter case is handled by removing
+ the property from windows before withdrawing them, making
+ the timestamp empty for next mapping of the window. In the sooner
+ case, the timestamp will be used. This helps in case when
+ an application is launched without application startup notification,
+ it creates its mainwindow, and starts its initialization (that
+ may possibly take long time). The timestamp used will be older
+ than any user action done after launching this application.
+ - if no timestamp is found at all, the window is activated.
+ The check whether two windows belong to the same application (same
+ process) is done in Client::belongToSameApplication(). Not 100% reliable,
+ but hopefully 99,99% reliable.
+
+ As a somewhat special case, window activation is always enabled when
+ session saving is in progress. When session saving, the session
+ manager allows only one application to interact with the user.
+ Not allowing window activation in such case would result in e.g. dialogs
+ not becoming active, so focus stealing prevention would cause here
+ more harm than good.
+
+ Windows that attempted to become active but KWin prevented this will
+ be marked as demanding user attention. They'll get
+ the _NET_WM_STATE_DEMANDS_ATTENTION state, and the taskbar should mark
+ them specially (blink, etc.). The state will be reset when the window
+ eventually really becomes active.
+
+ There are one more ways how a window can become obstrusive, window stealing
+ focus: By showing above the active window, by either raising itself,
+ or by moving itself on the active desktop.
+ - KWin will refuse raising non-active window above the active one,
+ unless they belong to the same application. Applications shouldn't
+ raise their windows anyway (unless the app wants to raise one
+ of its windows above another of its windows).
+ - KWin activates windows moved to the current desktop (as that seems
+ logical from the user's point of view, after sending the window
+ there directly from KWin, or e.g. using pager). This means
+ applications shouldn't send their windows to another desktop
+ (SELI TODO - but what if they do?)
+
+ Special cases I can think of:
+ - konqueror reusing, i.e. kfmclient tells running Konqueror instance
+ to open new window
+ - without focus stealing prevention - no problem
+ - with ASN (application startup notification) - ASN is forwarded,
+ and because it's newer than the instance's user timestamp,
+ it takes precedence
+ - without ASN - user timestamp needs to be reset, otherwise it would
+ be used, and it's old; moreover this new window mustn't be detected
+ as window belonging to already running application, or it wouldn't
+ be activated - see Client::sameAppWindowRoleMatch() for the (rather ugly)
+ hack
+ - konqueror preloading, i.e. window is created in advance, and kfmclient
+ tells this Konqueror instance to show it later
+ - without focus stealing prevention - no problem
+ - with ASN - ASN is forwarded, and because it's newer than the instance's
+ user timestamp, it takes precedence
+ - without ASN - user timestamp needs to be reset, otherwise it would
+ be used, and it's old; also, creation timestamp is changed to
+ the time the instance starts (re-)initializing the window,
+ this ensures creation timestamp will still work somewhat even in this case
+ - KUniqueApplication - when the window is already visible, and the new instance
+ wants it to activate
+ - without focus stealing prevention - _NET_ACTIVE_WINDOW - no problem
+ - with ASN - ASN is forwarded, and set on the already visible window, KWin
+ treats the window as new with that ASN
+ - without ASN - _NET_ACTIVE_WINDOW as application request is used,
+ and there's no really usable timestamp, only timestamp
+ from the time the (new) application instance was started,
+ so KWin will activate the window *sigh*
+ - the bad thing here is that there's absolutely no chance to recognize
+ the case of starting this KUniqueApp from Konsole (and thus wanting
+ the already visible window to become active) from the case
+ when something started this KUniqueApp without ASN (in which case
+ the already visible window shouldn't become active)
+ - the only solution is using ASN for starting applications, at least silent
+ (i.e. without feedback)
+ - when one application wants to activate another application's window (e.g. KMail
+ activating already running KAddressBook window ?)
+ - without focus stealing prevention - _NET_ACTIVE_WINDOW - no problem
+ - with ASN - can't be here, it's the KUniqueApp case then
+ - without ASN - _NET_ACTIVE_WINDOW as application request should be used,
+ KWin will activate the new window depending on the timestamp and
+ whether it belongs to the currently active application
+
+ _NET_ACTIVE_WINDOW usage:
+ data.l[0]= 1 ->app request
+ = 2 ->pager request
+ = 0 - backwards compatibility
+ data.l[1]= timestamp
+*/
+
+
+//****************************************
+// Workspace
+//****************************************
+
+
+/*!
+ Informs the workspace about the active client, i.e. the client that
+ has the focus (or None if no client has the focus). This functions
+ is called by the client itself that gets focus. It has no other
+ effect than fixing the focus chain and the return value of
+ activeClient(). And of course, to propagate the active client to the
+ world.
+ */
+void Workspace::setActiveClient( Client* c, allowed_t )
+ {
+ if ( active_client == c )
+ return;
+ if( active_popup && active_popup_client != c && set_active_client_recursion == 0 )
+ closeActivePopup();
+ StackingUpdatesBlocker blocker( this );
+ ++set_active_client_recursion;
+ updateFocusMousePosition( QCursor::pos());
+ if( active_client != NULL )
+ { // note that this may call setActiveClient( NULL ), therefore the recursion counter
+ active_client->setActive( false, !c || !c->isModal() || c != active_client->transientFor() );
+ }
+ active_client = c;
+ Q_ASSERT( c == NULL || c->isActive());
+ if( active_client != NULL )
+ last_active_client = active_client;
+ if ( active_client )
+ {
+ updateFocusChains( active_client, FocusChainMakeFirst );
+ active_client->demandAttention( false );
+ }
+ pending_take_activity = NULL;
+
+ updateCurrentTopMenu();
+ updateToolWindows( false );
+ if( c )
+ disableGlobalShortcutsForClient( c->rules()->checkDisableGlobalShortcuts( false ));
+ else
+ disableGlobalShortcutsForClient( false );
+
+ updateStackingOrder(); // e.g. fullscreens have different layer when active/not-active
+
+ rootInfo->setActiveWindow( active_client? active_client->window() : 0 );
+ updateColormap();
+ --set_active_client_recursion;
+ }
+
+/*!
+ Tries to activate the client \a c. This function performs what you
+ expect when clicking the respective entry in a taskbar: showing and
+ raising the client (this may imply switching to the another virtual
+ desktop) and putting the focus onto it. Once X really gave focus to
+ the client window as requested, the client itself will call
+ setActiveClient() and the operation is complete. This may not happen
+ with certain focus policies, though.
+
+ \sa stActiveClient(), requestFocus()
+ */
+void Workspace::activateClient( Client* c, bool force )
+ {
+ if( c == NULL )
+ {
+ focusToNull();
+ setActiveClient( NULL, Allowed );
+ return;
+ }
+ raiseClient( c );
+ if (!c->isOnDesktop(currentDesktop()) )
+ {
+ ++block_focus;
+ setCurrentDesktop( c->desktop() );
+ --block_focus;
+ }
+ if( c->isMinimized())
+ c->unminimize();
+
+// TODO force should perhaps allow this only if the window already contains the mouse
+ if( options->focusPolicyIsReasonable() || force )
+ requestFocus( c, force );
+
+ // Don't update user time for clients that have focus stealing workaround.
+ // As they usually belong to the current active window but fail to provide
+ // this information, updating their user time would make the user time
+ // of the currently active window old, and reject further activation for it.
+ // E.g. typing URL in minicli which will show kio_uiserver dialog (with workaround),
+ // and then kdesktop shows dialog about SSL certificate.
+ // This needs also avoiding user creation time in Client::readUserTimeMapTimestamp().
+ if( !c->ignoreFocusStealing())
+ c->updateUserTime();
+ }
+
+/*!
+ Tries to activate the client by asking X for the input focus. This
+ function does not perform any show, raise or desktop switching. See
+ Workspace::activateClient() instead.
+
+ \sa Workspace::activateClient()
+ */
+void Workspace::requestFocus( Client* c, bool force )
+ {
+ takeActivity( c, ActivityFocus | ( force ? ActivityFocusForce : 0 ), false);
+ }
+
+void Workspace::takeActivity( Client* c, int flags, bool handled )
+ {
+ // the 'if( c == active_client ) return;' optimization mustn't be done here
+ if (!focusChangeEnabled() && ( c != active_client) )
+ flags &= ~ActivityFocus;
+
+ if ( !c )
+ {
+ focusToNull();
+ return;
+ }
+
+ if( flags & ActivityFocus )
+ {
+ Client* modal = c->findModal();
+ if( modal != NULL && modal != c )
+ {
+ if( !modal->isOnDesktop( c->desktop()))
+ {
+ modal->setDesktop( c->desktop());
+ if( modal->desktop() != c->desktop()) // forced desktop
+ activateClient( modal );
+ }
+ // if the click was inside the window (i.e. handled is set),
+ // but it has a modal, there's no need to use handled mode, because
+ // the modal doesn't get the click anyway
+ // raising of the original window needs to be still done
+ if( flags & ActivityRaise )
+ raiseClient( c );
+ c = modal;
+ handled = false;
+ }
+ cancelDelayFocus();
+ }
+ if ( !( flags & ActivityFocusForce ) && ( c->isTopMenu() || c->isDock() || c->isSplash()) )
+ flags &= ~ActivityFocus; // toplevel menus and dock windows don't take focus if not forced
+ if( c->isShade())
+ {
+ if( c->wantsInput() && ( flags & ActivityFocus ))
+ {
+ // client cannot accept focus, but at least the window should be active (window menu, et. al. )
+ c->setActive( true );
+ focusToNull();
+ }
+ flags &= ~ActivityFocus;
+ handled = false; // no point, can't get clicks
+ }
+ if( !c->isShown( true )) // shouldn't happen, call activateClient() if needed
+ {
+ kdWarning( 1212 ) << "takeActivity: not shown" << endl;
+ return;
+ }
+ c->takeActivity( flags, handled, Allowed );
+ }
+
+void Workspace::handleTakeActivity( Client* c, Time /*timestamp*/, int flags )
+ {
+ if( pending_take_activity != c ) // pending_take_activity is reset when doing restack or activation
+ return;
+ if(( flags & ActivityRaise ) != 0 )
+ raiseClient( c );
+ if(( flags & ActivityFocus ) != 0 && c->isShown( false ))
+ c->takeFocus( Allowed );
+ pending_take_activity = NULL;
+ }
+
+/*!
+ Informs the workspace that the client \a c has been hidden. If it
+ was the active client (or to-become the active client),
+ the workspace activates another one.
+
+ \a c may already be destroyed
+ */
+void Workspace::clientHidden( Client* c )
+ {
+ assert( !c->isShown( true ) || !c->isOnCurrentDesktop());
+ activateNextClient( c );
+ }
+
+// deactivates 'c' and activates next client
+bool Workspace::activateNextClient( Client* c )
+ {
+ // if 'c' is not the active or the to-become active one, do nothing
+ if( !( c == active_client
+ || ( should_get_focus.count() > 0 && c == should_get_focus.last())))
+ return false;
+ closeActivePopup();
+ if( c != NULL )
+ {
+ if( c == active_client )
+ setActiveClient( NULL, Allowed );
+ should_get_focus.remove( c );
+ }
+ if( focusChangeEnabled())
+ {
+ if ( options->focusPolicyIsReasonable())
+ { // search the focus_chain for a client to transfer focus to
+ // if 'c' is transient, transfer focus to the first suitable mainwindow
+ Client* get_focus = NULL;
+ const ClientList mainwindows = ( c != NULL ? c->mainClients() : ClientList());
+ for( ClientList::ConstIterator it = focus_chain[currentDesktop()].fromLast();
+ it != focus_chain[currentDesktop()].end();
+ --it )
+ {
+ if( !(*it)->isShown( false ) || !(*it)->isOnCurrentDesktop())
+ continue;
+ if( mainwindows.contains( *it ))
+ {
+ get_focus = *it;
+ break;
+ }
+ if( get_focus == NULL )
+ get_focus = *it;
+ }
+ if( get_focus == NULL )
+ get_focus = findDesktop( true, currentDesktop());
+ if( get_focus != NULL )
+ requestFocus( get_focus );
+ else
+ focusToNull();
+ }
+ else
+ return false;
+ }
+ else
+ // if blocking focus, move focus to the desktop later if needed
+ // in order to avoid flickering
+ focusToNull();
+ return true;
+ }
+
+
+void Workspace::gotFocusIn( const Client* c )
+ {
+ if( should_get_focus.contains( const_cast< Client* >( c )))
+ { // remove also all sooner elements that should have got FocusIn,
+ // but didn't for some reason (and also won't anymore, because they were sooner)
+ while( should_get_focus.first() != c )
+ should_get_focus.pop_front();
+ should_get_focus.pop_front(); // remove 'c'
+ }
+ }
+
+void Workspace::setShouldGetFocus( Client* c )
+ {
+ should_get_focus.append( c );
+ updateStackingOrder(); // e.g. fullscreens have different layer when active/not-active
+ }
+
+// focus_in -> the window got FocusIn event
+// session_active -> the window was active when saving session
+bool Workspace::allowClientActivation( const Client* c, Time time, bool focus_in )
+ {
+ // options->focusStealingPreventionLevel :
+ // 0 - none - old KWin behaviour, new windows always get focus
+ // 1 - low - focus stealing prevention is applied normally, when unsure, activation is allowed
+ // 2 - normal - focus stealing prevention is applied normally, when unsure, activation is not allowed,
+ // this is the default
+ // 3 - high - new window gets focus only if it belongs to the active application,
+ // or when no window is currently active
+ // 4 - extreme - no window gets focus without user intervention
+ if( time == -1U )
+ time = c->userTime();
+ int level = c->rules()->checkFSP( options->focusStealingPreventionLevel );
+ if( session_saving && level <= 2 ) // <= normal
+ {
+ return true;
+ }
+ Client* ac = mostRecentlyActivatedClient();
+ if( focus_in )
+ {
+ if( should_get_focus.contains( const_cast< Client* >( c )))
+ return true; // FocusIn was result of KWin's action
+ // Before getting FocusIn, the active Client already
+ // got FocusOut, and therefore got deactivated.
+ ac = last_active_client;
+ }
+ if( time == 0 ) // explicitly asked not to get focus
+ return false;
+ if( level == 0 ) // none
+ return true;
+ if( level == 4 ) // extreme
+ return false;
+ if( !c->isOnCurrentDesktop())
+ return false; // allow only with level == 0
+ if( c->ignoreFocusStealing())
+ return true;
+ if( ac == NULL || ac->isDesktop())
+ {
+// kdDebug( 1212 ) << "Activation: No client active, allowing" << endl;
+ return true; // no active client -> always allow
+ }
+ // TODO window urgency -> return true?
+ if( Client::belongToSameApplication( c, ac, true ))
+ {
+// kdDebug( 1212 ) << "Activation: Belongs to active application" << endl;
+ return true;
+ }
+ if( level == 3 ) // high
+ return false;
+ if( time == -1U ) // no time known
+ {
+// kdDebug( 1212 ) << "Activation: No timestamp at all" << endl;
+ if( level == 1 ) // low
+ return true;
+ // no timestamp at all, don't activate - because there's also creation timestamp
+ // done on CreateNotify, this case should happen only in case application
+ // maps again already used window, i.e. this won't happen after app startup
+ return false;
+ }
+ // level == 2 // normal
+ Time user_time = ac->userTime();
+// kdDebug( 1212 ) << "Activation, compared:" << c << ":" << time << ":" << user_time
+// << ":" << ( timestampCompare( time, user_time ) >= 0 ) << endl;
+ return timestampCompare( time, user_time ) >= 0; // time >= user_time
+ }
+
+// basically the same like allowClientActivation(), this time allowing
+// a window to be fully raised upon its own request (XRaiseWindow),
+// if refused, it will be raised only on top of windows belonging
+// to the same application
+bool Workspace::allowFullClientRaising( const Client* c, Time time )
+ {
+ int level = c->rules()->checkFSP( options->focusStealingPreventionLevel );
+ if( session_saving && level <= 2 ) // <= normal
+ {
+ return true;
+ }
+ Client* ac = mostRecentlyActivatedClient();
+ if( level == 0 ) // none
+ return true;
+ if( level == 4 ) // extreme
+ return false;
+ if( ac == NULL || ac->isDesktop())
+ {
+// kdDebug( 1212 ) << "Raising: No client active, allowing" << endl;
+ return true; // no active client -> always allow
+ }
+ if( c->ignoreFocusStealing())
+ return true;
+ // TODO window urgency -> return true?
+ if( Client::belongToSameApplication( c, ac, true ))
+ {
+// kdDebug( 1212 ) << "Raising: Belongs to active application" << endl;
+ return true;
+ }
+ if( level == 3 ) // high
+ return false;
+ Time user_time = ac->userTime();
+// kdDebug( 1212 ) << "Raising, compared:" << time << ":" << user_time
+// << ":" << ( timestampCompare( time, user_time ) >= 0 ) << endl;
+ return timestampCompare( time, user_time ) >= 0; // time >= user_time
+ }
+
+// called from Client after FocusIn that wasn't initiated by KWin and the client
+// wasn't allowed to activate
+void Workspace::restoreFocus()
+ {
+ // this updateXTime() is necessary - as FocusIn events don't have
+ // a timestamp *sigh*, kwin's timestamp would be older than the timestamp
+ // that was used by whoever caused the focus change, and therefore
+ // the attempt to restore the focus would fail due to old timestamp
+ updateXTime();
+ if( should_get_focus.count() > 0 )
+ requestFocus( should_get_focus.last());
+ else if( last_active_client )
+ requestFocus( last_active_client );
+ }
+
+void Workspace::clientAttentionChanged( Client* c, bool set )
+ {
+ if( set )
+ {
+ attention_chain.remove( c );
+ attention_chain.prepend( c );
+ }
+ else
+ attention_chain.remove( c );
+ }
+
+// This is used when a client should be shown active immediately after requestFocus(),
+// without waiting for the matching FocusIn that will really make the window the active one.
+// Used only in special cases, e.g. for MouseActivateRaiseandMove with transparent windows,
+bool Workspace::fakeRequestedActivity( Client* c )
+ {
+ if( should_get_focus.count() > 0 && should_get_focus.last() == c )
+ {
+ if( c->isActive())
+ return false;
+ c->setActive( true );
+ return true;
+ }
+ return false;
+ }
+
+void Workspace::unfakeActivity( Client* c )
+ {
+ if( should_get_focus.count() > 0 && should_get_focus.last() == c )
+ { // TODO this will cause flicker, and probably is not needed
+ if( last_active_client != NULL )
+ last_active_client->setActive( true );
+ else
+ c->setActive( false );
+ }
+ }
+
+
+//********************************************
+// Client
+//********************************************
+
+/*!
+ Updates the user time (time of last action in the active window).
+ This is called inside kwin for every action with the window
+ that qualifies for user interaction (clicking on it, activate it
+ externally, etc.).
+ */
+void Client::updateUserTime( Time time )
+ { // copied in Group::updateUserTime
+ if( time == CurrentTime )
+ time = qt_x_time;
+ if( time != -1U
+ && ( user_time == CurrentTime
+ || timestampCompare( time, user_time ) > 0 )) // time > user_time
+ user_time = time;
+ group()->updateUserTime( user_time );
+ }
+
+Time Client::readUserCreationTime() const
+ {
+ long result = -1; // Time == -1 means none
+ Atom type;
+ int format, status;
+ unsigned long nitems = 0;
+ unsigned long extra = 0;
+ unsigned char *data = 0;
+ KXErrorHandler handler; // ignore errors?
+ status = XGetWindowProperty( qt_xdisplay(), window(),
+ atoms->kde_net_wm_user_creation_time, 0, 10000, FALSE, XA_CARDINAL,
+ &type, &format, &nitems, &extra, &data );
+ if (status == Success )
+ {
+ if (data && nitems > 0)
+ result = *((long*) data);
+ XFree(data);
+ }
+ return result;
+ }
+
+void Client::demandAttention( bool set )
+ {
+ if( isActive())
+ set = false;
+ if( demands_attention == set )
+ return;
+ demands_attention = set;
+ if( demands_attention )
+ {
+ // Demand attention flag is often set right from manage(), when focus stealing prevention
+ // steps in. At that time the window has no taskbar entry yet, so KNotify cannot place
+ // e.g. the passive popup next to it. So wait up to 1 second for the icon geometry
+ // to be set.
+ // Delayed call to KNotify also solves the problem of having X server grab in manage(),
+ // which may deadlock when KNotify (or KLauncher when launching KNotify) need to access X.
+ Notify::Event e = isOnCurrentDesktop() ? Notify::DemandAttentionCurrent : Notify::DemandAttentionOther;
+ // Setting the demands attention state needs to be done directly in KWin, because
+ // KNotify would try to set it, resulting in a call to KNotify again, etc.
+ if( Notify::makeDemandAttention( e ))
+ info->setState( set ? NET::DemandsAttention : 0, NET::DemandsAttention );
+
+ if( demandAttentionKNotifyTimer == NULL )
+ {
+ demandAttentionKNotifyTimer = new QTimer( this );
+ connect( demandAttentionKNotifyTimer, SIGNAL( timeout()), SLOT( demandAttentionKNotify()));
+ }
+ demandAttentionKNotifyTimer->start( 1000, true );
+ }
+ else
+ info->setState( set ? NET::DemandsAttention : 0, NET::DemandsAttention );
+ workspace()->clientAttentionChanged( this, set );
+ }
+
+void Client::demandAttentionKNotify()
+ {
+ Notify::Event e = isOnCurrentDesktop() ? Notify::DemandAttentionCurrent : Notify::DemandAttentionOther;
+ Notify::raise( e, i18n( "Window '%1' demands attention." ).arg( KStringHandler::csqueeze(caption())), this );
+ demandAttentionKNotifyTimer->stop();
+ demandAttentionKNotifyTimer->deleteLater();
+ demandAttentionKNotifyTimer = NULL;
+ }
+
+// TODO I probably shouldn't be lazy here and do it without the macro, so that people can read it
+KWIN_COMPARE_PREDICATE( SameApplicationActiveHackPredicate, const Client*,
+ // ignore already existing splashes, toolbars, utilities, menus and topmenus,
+ // as the app may show those before the main window
+ !cl->isSplash() && !cl->isToolbar() && !cl->isTopMenu() && !cl->isUtility() && !cl->isMenu()
+ && Client::belongToSameApplication( cl, value, true ) && cl != value);
+
+Time Client::readUserTimeMapTimestamp( const KStartupInfoId* asn_id, const KStartupInfoData* asn_data,
+ bool session ) const
+ {
+ Time time = info->userTime();
+// kdDebug( 1212 ) << "User timestamp, initial:" << time << endl;
+ // newer ASN timestamp always replaces user timestamp, unless user timestamp is 0
+ // helps e.g. with konqy reusing
+ if( asn_data != NULL && time != 0 )
+ {
+ // prefer timestamp from ASN id (timestamp from data is obsolete way)
+ if( asn_id->timestamp() != 0
+ && ( time == -1U || timestampCompare( asn_id->timestamp(), time ) > 0 ))
+ {
+ time = asn_id->timestamp();
+ }
+ else if( asn_data->timestamp() != -1U
+ && ( time == -1U || timestampCompare( asn_data->timestamp(), time ) > 0 ))
+ {
+ time = asn_data->timestamp();
+ }
+ }
+// kdDebug( 1212 ) << "User timestamp, ASN:" << time << endl;
+ if( time == -1U )
+ { // The window doesn't have any timestamp.
+ // If it's the first window for its application
+ // (i.e. there's no other window from the same app),
+ // use the _KDE_NET_WM_USER_CREATION_TIME trick.
+ // Otherwise, refuse activation of a window
+ // from already running application if this application
+ // is not the active one (unless focus stealing prevention is turned off).
+ Client* act = workspace()->mostRecentlyActivatedClient();
+ if( act != NULL && !belongToSameApplication( act, this, true ))
+ {
+ bool first_window = true;
+ if( isTransient())
+ {
+ if( act->hasTransient( this, true ))
+ ; // is transient for currently active window, even though it's not
+ // the same app (e.g. kcookiejar dialog) -> allow activation
+ else if( groupTransient() &&
+ findClientInList( mainClients(), SameApplicationActiveHackPredicate( this )) == NULL )
+ ; // standalone transient
+ else
+ first_window = false;
+ }
+ else
+ {
+ if( workspace()->findClient( SameApplicationActiveHackPredicate( this )))
+ first_window = false;
+ }
+ // don't refuse if focus stealing prevention is turned off
+ if( !first_window && rules()->checkFSP( options->focusStealingPreventionLevel ) > 0 )
+ {
+// kdDebug( 1212 ) << "User timestamp, already exists:" << 0 << endl;
+ return 0; // refuse activation
+ }
+ }
+ // Creation time would just mess things up during session startup,
+ // as possibly many apps are started up at the same time.
+ // If there's no active window yet, no timestamp will be needed,
+ // as plain Workspace::allowClientActivation() will return true
+ // in such case. And if there's already active window,
+ // it's better not to activate the new one.
+ // Unless it was the active window at the time
+ // of session saving and there was no user interaction yet,
+ // this check will be done in manage().
+ if( session )
+ return -1U;
+ if( ignoreFocusStealing() && act != NULL )
+ time = act->userTime();
+ else
+ time = readUserCreationTime();
+ }
+// kdDebug( 1212 ) << "User timestamp, final:" << this << ":" << time << endl;
+ return time;
+ }
+
+Time Client::userTime() const
+ {
+ Time time = user_time;
+ if( time == 0 ) // doesn't want focus after showing
+ return 0;
+ assert( group() != NULL );
+ if( time == -1U
+ || ( group()->userTime() != -1U
+ && timestampCompare( group()->userTime(), time ) > 0 ))
+ time = group()->userTime();
+ return time;
+ }
+
+/*!
+ Sets the client's active state to \a act.
+
+ This function does only change the visual appearance of the client,
+ it does not change the focus setting. Use
+ Workspace::activateClient() or Workspace::requestFocus() instead.
+
+ If a client receives or looses the focus, it calls setActive() on
+ its own.
+
+ */
+void Client::setActive( bool act, bool updateOpacity_)
+ {
+ if ( active == act )
+ return;
+ active = act;
+ workspace()->setActiveClient( act ? this : NULL, Allowed );
+
+ if (updateOpacity_) updateOpacity();
+ if (isModal() && transientFor())
+ {
+ if (!act) transientFor()->updateOpacity();
+ else if (!transientFor()->custom_opacity) transientFor()->setOpacity(options->translucentActiveWindows, options->activeWindowOpacity);
+ }
+ updateShadowSize();
+
+ if ( active )
+ Notify::raise( Notify::Activate );
+
+ if( !active )
+ cancelAutoRaise();
+
+ if( !active && shade_mode == ShadeActivated )
+ setShade( ShadeNormal );
+
+ StackingUpdatesBlocker blocker( workspace());
+ workspace()->updateClientLayer( this ); // active windows may get different layer
+ // TODO optimize? mainClients() may be a bit expensive
+ ClientList mainclients = mainClients();
+ for( ClientList::ConstIterator it = mainclients.begin();
+ it != mainclients.end();
+ ++it )
+ if( (*it)->isFullScreen()) // fullscreens go high even if their transient is active
+ workspace()->updateClientLayer( *it );
+ if( decoration != NULL )
+ decoration->activeChange();
+ updateMouseGrab();
+ updateUrgency(); // demand attention again if it's still urgent
+ }
+
+void Client::startupIdChanged()
+ {
+ KStartupInfoId asn_id;
+ KStartupInfoData asn_data;
+ bool asn_valid = workspace()->checkStartupNotification( window(), asn_id, asn_data );
+ if( !asn_valid )
+ return;
+ // If the ASN contains desktop, move it to the desktop, otherwise move it to the current
+ // desktop (since the new ASN should make the window act like if it's a new application
+ // launched). However don't affect the window's desktop if it's set to be on all desktops.
+ int desktop = workspace()->currentDesktop();
+ if( asn_data.desktop() != 0 )
+ desktop = asn_data.desktop();
+ if( !isOnAllDesktops())
+ workspace()->sendClientToDesktop( this, desktop, true );
+ Time timestamp = asn_id.timestamp();
+ if( timestamp == 0 && asn_data.timestamp() != -1U )
+ timestamp = asn_data.timestamp();
+ if( timestamp != 0 )
+ {
+ bool activate = workspace()->allowClientActivation( this, timestamp );
+ if( asn_data.desktop() != 0 && !isOnCurrentDesktop())
+ activate = false; // it was started on different desktop than current one
+ if( activate )
+ workspace()->activateClient( this );
+ else
+ demandAttention();
+ }
+ }
+
+void Client::updateUrgency()
+ {
+ if( urgency )
+ demandAttention();
+ }
+
+void Client::shortcutActivated()
+ {
+ workspace()->activateClient( this, true ); // force
+ }
+
+//****************************************
+// Group
+//****************************************
+
+void Group::startupIdChanged()
+ {
+ KStartupInfoId asn_id;
+ KStartupInfoData asn_data;
+ bool asn_valid = workspace()->checkStartupNotification( leader_wid, asn_id, asn_data );
+ if( !asn_valid )
+ return;
+ if( asn_id.timestamp() != 0 && user_time != -1U
+ && timestampCompare( asn_id.timestamp(), user_time ) > 0 )
+ {
+ user_time = asn_id.timestamp();
+ }
+ else if( asn_data.timestamp() != -1U && user_time != -1U
+ && timestampCompare( asn_data.timestamp(), user_time ) > 0 )
+ {
+ user_time = asn_data.timestamp();
+ }
+ }
+
+void Group::updateUserTime( Time time )
+ { // copy of Client::updateUserTime
+ if( time == CurrentTime )
+ time = qt_x_time;
+ if( time != -1U
+ && ( user_time == CurrentTime
+ || timestampCompare( time, user_time ) > 0 )) // time > user_time
+ user_time = time;
+ }
+
+} // namespace