Add an is input method composing property to TextEdit and TextInput.

Allows input handling to be disabled or changed while an input method
is active.  This might be used to allow mouse events through to the element
or in conjunction with the cursor position to determine whether a click
occurred on the preedit text.

Change-Id: I35e148691920579c1d7c6f27b7e805d9551beadd
Task-number: QTBUG-17835
Reviewed-by: Martin Jones

2 files changed, 76 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp b/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp
index 2c3ec7c..b8f9b77 100644
--- a/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp
+++ b/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp
@@ -140,6 +140,7 @@ private slots:
 
     void preeditMicroFocus();
     void inputContextMouseHandler();
+    void inputMethodComposing();
 
 private:
     void simulateKey(QDeclarativeView *, int key);
@@ -2079,6 +2080,43 @@ void tst_qdeclarativetextedit::inputContextMouseHandler()
     ic.eventType = QEvent::None;
 }
 
+void tst_qdeclarativetextedit::inputMethodComposing()
+{
+    QString text = "supercalifragisiticexpialidocious!";
+
+    QGraphicsScene scene;
+    QGraphicsView view(&scene);
+    MyInputContext ic;
+    view.setInputContext(&ic);
+    QDeclarativeTextEdit edit;
+    edit.setWidth(200);
+    edit.setText(text.mid(0, 12));
+    edit.setCursorPosition(12);
+    edit.setPos(0, 0);
+    edit.setFocus(true);
+    scene.addItem(&edit);
+    view.show();
+    QApplication::setActiveWindow(&view);
+    QTest::qWaitForWindowShown(&view);
+    QTRY_COMPARE(QApplication::activeWindow(), static_cast<QWidget *>(&view));
+
+    QSignalSpy spy(&edit, SIGNAL(inputMethodComposingChanged()));
+
+    QCOMPARE(edit.isInputMethodComposing(), false);
+
+    ic.sendEvent(QInputMethodEvent(text.mid(3), QList<QInputMethodEvent::Attribute>()));
+    QCOMPARE(edit.isInputMethodComposing(), true);
+    QCOMPARE(spy.count(), 1);
+
+    ic.sendEvent(QInputMethodEvent(text.mid(12), QList<QInputMethodEvent::Attribute>()));
+    QCOMPARE(edit.isInputMethodComposing(), true);
+    QCOMPARE(spy.count(), 1);
+
+    ic.sendEvent(QInputMethodEvent());
+    QCOMPARE(edit.isInputMethodComposing(), false);
+    QCOMPARE(spy.count(), 2);
+}
+
 QTEST_MAIN(tst_qdeclarativetextedit)
 
 #include "tst_qdeclarativetextedit.moc"
diff --git a/tests/auto/declarative/qdeclarativetextinput/tst_qdeclarativetextinput.cpp b/tests/auto/declarative/qdeclarativetextinput/tst_qdeclarativetextinput.cpp
index 6cb57a2..489f8dc 100644
--- a/tests/auto/declarative/qdeclarativetextinput/tst_qdeclarativetextinput.cpp
+++ b/tests/auto/declarative/qdeclarativetextinput/tst_qdeclarativetextinput.cpp
@@ -128,6 +128,7 @@ private slots:
     void preeditAutoScroll();
     void preeditMicroFocus();
     void inputContextMouseHandler();
+    void inputMethodComposing();
 
 private:
     void simulateKey(QDeclarativeView *, int key);
@@ -2074,6 +2075,43 @@ void tst_qdeclarativetextinput::inputContextMouseHandler()
     ic.eventType = QEvent::None;
 }
 
+void tst_qdeclarativetextinput::inputMethodComposing()
+{
+    QString text = "supercalifragisiticexpialidocious!";
+
+    QGraphicsScene scene;
+    QGraphicsView view(&scene);
+    MyInputContext ic;
+    view.setInputContext(&ic);
+    QDeclarativeTextInput input;
+    input.setWidth(200);
+    input.setText(text.mid(0, 12));
+    input.setCursorPosition(12);
+    input.setPos(0, 0);
+    input.setFocus(true);
+    scene.addItem(&input);
+    view.show();
+    QApplication::setActiveWindow(&view);
+    QTest::qWaitForWindowShown(&view);
+    QTRY_COMPARE(QApplication::activeWindow(), static_cast<QWidget *>(&view));
+
+    QSignalSpy spy(&input, SIGNAL(inputMethodComposingChanged()));
+
+    QCOMPARE(input.isInputMethodComposing(), false);
+
+    ic.sendEvent(QInputMethodEvent(text.mid(3), QList<QInputMethodEvent::Attribute>()));
+    QCOMPARE(input.isInputMethodComposing(), true);
+    QCOMPARE(spy.count(), 1);
+
+    ic.sendEvent(QInputMethodEvent(text.mid(12), QList<QInputMethodEvent::Attribute>()));
+    QCOMPARE(input.isInputMethodComposing(), true);
+    QCOMPARE(spy.count(), 1);
+
+    ic.sendEvent(QInputMethodEvent());
+    QCOMPARE(input.isInputMethodComposing(), false);
+    QCOMPARE(spy.count(), 2);
+}
+
 QTEST_MAIN(tst_qdeclarativetextinput)
 
 #include "tst_qdeclarativetextinput.moc"