Implement ProgressManager's progress-bar-on-icon on Windows 7.

Allow compiling with older Windows SDKs, link ole32 explictly.
If you want this feature to work, you need to compile and test
it on Windows 7.

Task-Number: QTCREATORBUG-252

src/plugins/coreplugin/coreplugin.pro

@@ -168,6 +168,7 @@ RESOURCES += core.qrc \
 
 win32 {
     SOURCES += progressmanager/progressmanager_win.cpp
+    LIBS += -lole32
 }
 else:macx {
     OBJECTIVE_SOURCES += progressmanager/progressmanager_mac.mm

src/plugins/coreplugin/progressmanager/progressmanager.cpp

@@ -50,10 +50,7 @@ ProgressManagerPrivate::ProgressManagerPrivate(QObject *parent)
 
 ProgressManagerPrivate::~ProgressManagerPrivate()
 {
-}
-
-void ProgressManagerPrivate::init()
-{
+    cleanup();
 }
 
 void ProgressManagerPrivate::cancelTasks(const QString &type)

src/plugins/coreplugin/progressmanager/progressmanager_mac.mm

@@ -29,6 +29,14 @@
 
 #include "progressmanager_p.h"
 
+void Core::Internal::ProgressManagerPrivate::init()
+{
+}
+
+void Core::Internal::ProgressManagerPrivate::cleanup()
+{
+}
+
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 #import <AppKit/NSDockTile.h>
 #import <AppKit/NSApplication.h>

src/plugins/coreplugin/progressmanager/progressmanager_p.h

@@ -48,6 +48,7 @@ public:
     ProgressManagerPrivate(QObject *parent = 0);
     ~ProgressManagerPrivate();
     void init();
+    void cleanup();
 
     FutureProgress *addTask(const QFuture<void> &future, const QString &title, const QString &type,
                             ProgressFlags flags);

src/plugins/coreplugin/progressmanager/progressmanager_win.cpp

@@ -27,8 +27,91 @@
 **
 **************************************************************************/
 
+#include <QtCore/QVariant>
+#include <QtGui/QMainWindow>
+
+#include <coreplugin/icore.h>
+
 #include "progressmanager_p.h"
 
+// for windows progress bar
+#include <shobjidl.h>
+
+// Windows 7 SDK required
+#ifdef __ITaskbarList3_INTERFACE_DEFINED__
+
+namespace {
+    int total = 0;
+    ITaskbarList3* pITask = 0;
+}
+
+void Core::Internal::ProgressManagerPrivate::init()
+{
+    CoInitialize(NULL);
+    HRESULT hRes = CoCreateInstance(CLSID_TaskbarList,
+                                    NULL,CLSCTX_INPROC_SERVER,
+                                    IID_ITaskbarList3,(LPVOID*) &pITask);
+     if (FAILED(hRes))
+     {
+         pITask = 0;
+         CoUninitialize();
+         return;
+     }
+
+     pITask->HrInit();
+     return;
+}
+
+void Core::Internal::ProgressManagerPrivate::cleanup()
+{
+    if (pITask) {
+    pITask->Release();
+    pITask = NULL;
+    CoUninitialize();
+    }
+}
+
+
+void Core::Internal::ProgressManagerPrivate::setApplicationLabel(const QString &text)
+{
+    Q_UNUSED(text)
+}
+
+void Core::Internal::ProgressManagerPrivate::setApplicationProgressRange(int min, int max)
+{
+    total = max-min;
+}
+
+void Core::Internal::ProgressManagerPrivate::setApplicationProgressValue(int value)
+{
+    if (pITask) {
+        WId winId = Core::ICore::instance()->mainWindow()->winId();
+        pITask->SetProgressValue(winId, value, total);
+    }
+}
+
+void Core::Internal::ProgressManagerPrivate::setApplicationProgressVisible(bool visible)
+{
+    if (!pITask)
+        return;
+
+    WId winId = Core::ICore::instance()->mainWindow()->winId();
+    if (visible)
+        pITask->SetProgressState(winId, TBPF_NORMAL);
+    else
+        pITask->SetProgressState(winId, TBPF_NOPROGRESS);
+}
+
+#else
+
+void Core::Internal::ProgressManagerPrivate::init()
+{
+}
+
+void Core::Internal::ProgressManagerPrivate::cleanup()
+{
+}
+
 void Core::Internal::ProgressManagerPrivate::setApplicationLabel(const QString &text)
 {
     Q_UNUSED(text)
@@ -49,3 +132,6 @@ void Core::Internal::ProgressManagerPrivate::setApplicationProgressVisible(bool
 {
     Q_UNUSED(visible)
 }
+
+
+#endif // __ITaskbarList2_INTERFACE_DEFINED__

src/plugins/coreplugin/progressmanager/progressmanager_x11.cpp

@@ -29,6 +29,14 @@
 
 #include "progressmanager_p.h"
 
+void Core::Internal::ProgressManagerPrivate::init()
+{
+}
+
+void Core::Internal::ProgressManagerPrivate::cleanup()
+{
+}
+
 void Core::Internal::ProgressManagerPrivate::setApplicationLabel(const QString &text)
 {
     Q_UNUSED(text)