From 285ce9a19f2dd16f0aca650b52ac25daf6656b09 Mon Sep 17 00:00:00 2001
From: Alessandro Portale <aportale@trolltech.com>
Date: Thu, 14 May 2009 21:28:30 +0200
Subject: Connecting to focusChanged in order to ask the freshly focussed
 widget for its actions.

---
 src/gui/widgets/qsoftkeystack.cpp | 26 ++++++++++++++++++++++++++
 src/gui/widgets/qsoftkeystack.h   |  4 ++++
 2 files changed, 30 insertions(+)

diff --git a/src/gui/widgets/qsoftkeystack.cpp b/src/gui/widgets/qsoftkeystack.cpp
index 687b236..61f7b64 100644
--- a/src/gui/widgets/qsoftkeystack.cpp
+++ b/src/gui/widgets/qsoftkeystack.cpp
@@ -41,6 +41,8 @@
 
 #include "qsoftkeystack.h"
 #include "qsoftkeystack_p.h"
+#include "qapplication.h"
+#include "qmainwindow.h"
 
 QSoftKeyStackPrivate::QSoftKeyStackPrivate()
 {
@@ -76,6 +78,7 @@ void QSoftKeyStackPrivate::pop()
 QSoftKeyStack::QSoftKeyStack(QWidget *parent)
     : QObject(*new QSoftKeyStackPrivate, parent)
 {
+    connect(qApp, SIGNAL(focusChanged(QWidget*, QWidget*)), SLOT(handleFocusChanged(QWidget*, QWidget*)));
 }
 
 QSoftKeyStack::~QSoftKeyStack()
@@ -100,3 +103,26 @@ void QSoftKeyStack::pop()
     d->pop();
 }
 
+void QSoftKeyStack::handleFocusChanged(QWidget *old, QWidget *now)
+{
+    if (!now)
+        return;
+    bool nowInOurMainWindow = false;
+    const QMainWindow *ourMainWindow = qobject_cast<const QMainWindow*>(parent());
+    Q_ASSERT(ourMainWindow);
+
+    // "ourMainWindow" in parent chain of "now"? Isn't there a helper in Qt for this?
+    QWidget *nowParent = now;
+    while (nowParent = nowParent->parentWidget()) {
+        if (nowParent == ourMainWindow) {
+            nowInOurMainWindow = true;
+            break;
+        }
+    }
+
+    if (!nowInOurMainWindow)
+        return;
+
+    QList<QAction*> actions = now->actions();
+    // Do something with these actions.
+}
diff --git a/src/gui/widgets/qsoftkeystack.h b/src/gui/widgets/qsoftkeystack.h
index ca06072..d126b32 100644
--- a/src/gui/widgets/qsoftkeystack.h
+++ b/src/gui/widgets/qsoftkeystack.h
@@ -57,6 +57,7 @@ class QSoftKeyAction;
 
 class Q_GUI_EXPORT QSoftKeyStack : public QObject
 {
+    Q_OBJECT
 public:
     QSoftKeyStack(QWidget *parent);
     ~QSoftKeyStack();
@@ -67,6 +68,9 @@ public:
 
     void handleSoftKeyPress(int command);
 
+private Q_SLOTS:
+    void handleFocusChanged(QWidget *old, QWidget *now);
+
 private:
     Q_DECLARE_PRIVATE(QSoftKeyStack)
     Q_DISABLE_COPY(QSoftKeyStack)
-- 
cgit v0.12