Пример #1
0
bool EditorClient::executePendingEditorCommands(Frame* frame, bool allowTextInsertion)
{
    Vector<Editor::Command> commands;
    for (size_t i = 0; i < m_pendingEditorCommands.size(); i++) {
        Editor::Command command = frame->editor()->command(m_pendingEditorCommands.at(i).utf8().data());
        if (command.isTextInsertion() && !allowTextInsertion)
            return false;

        commands.append(command);
    }

    bool success = true;
    for (size_t i = 0; i < commands.size(); i++) {
        if (!commands.at(i).execute()) {
            success = false;
            break;
        }
    }

    m_pendingEditorCommands.clear();

    // If we successfully completed all editor commands, then
    // this signals a canceling of the composition.
    if (success)
        clearPendingComposition();

    return success;
}
bool EditorClient::shouldEndEditing(WebCore::Range*)
{
    clearPendingComposition();

    notImplemented();
    return true;
}
Пример #3
0
bool EditorClient::shouldEndEditing(WebCore::Range* range)
{
    clearPendingComposition();

    gboolean accept = TRUE;
    GRefPtr<WebKitDOMRange> kitRange(adoptGRef(kit(range)));
    g_signal_emit_by_name(m_webView, "should-end-editing", kitRange.get(), &accept);
    return accept;
}
Пример #4
0
void EditorClient::handleInputMethodKeydown(KeyboardEvent* event)
{
    Frame* targetFrame = core(m_webView)->focusController()->focusedOrMainFrame();
    if (!targetFrame || !targetFrame->editor()->canEdit())
        return;

    WebKitWebViewPrivate* priv = m_webView->priv;

    m_preventNextCompositionCommit = false;

    // Some IM contexts (e.g. 'simple') will act as if they filter every
    // keystroke and just issue a 'commit' signal during handling. In situations
    // where the 'commit' signal happens during filtering and there is no active
    // composition, act as if the keystroke was not filtered. The one exception to
    // this is when the keyval parameter of the GdkKeyEvent is 0, which is often
    // a key event sent by the IM context for committing the current composition.

    // Here is a typical sequence of events for the 'simple' context:
    // 1. GDK key press event -> webkit_web_view_key_press_event
    // 2. Keydown event -> EditorClient::handleInputMethodKeydown
    //     gtk_im_context_filter_keypress returns true, but there is a pending
    //     composition so event->preventDefault is not called (below).
    // 3. Keydown event bubbles through the DOM
    // 4. Keydown event -> EditorClient::handleKeyboardEvent
    //     No action taken.
    // 4. GDK key release event -> webkit_web_view_key_release_event
    // 5. gtk_im_context_filter_keypress is called on the release event.
    //     Simple does not filter most key releases, so the event continues.
    // 6. Keypress event bubbles through the DOM.
    // 7. Keypress event -> EditorClient::handleKeyboardEvent
    //     pending composition is inserted.
    // 8. Keyup event bubbles through the DOM.
    // 9. Keyup event -> EditorClient::handleKeyboardEvent
    //     No action taken.

    // There are two situations where we do filter the keystroke:
    // 1. The IMContext instructed us to filter and we have no pending composition.
    // 2. The IMContext did not instruct us to filter, but the keystroke caused a
    //    composition in progress to finish. It seems that sometimes SCIM will finish
    //    a composition and not mark the keystroke as filtered.
    m_treatContextCommitAsKeyEvent = (!targetFrame->editor()->hasComposition())
                                     && event->keyEvent()->gdkEventKey()->keyval;
    clearPendingComposition();
    if ((gtk_im_context_filter_keypress(priv->imContext.get(), event->keyEvent()->gdkEventKey()) && !m_pendingComposition)
            || (!m_treatContextCommitAsKeyEvent && !targetFrame->editor()->hasComposition()))
        event->preventDefault();

    m_treatContextCommitAsKeyEvent = false;
}
Пример #5
0
void EditorClient::handleKeyboardEvent(KeyboardEvent* event)
{
    Node* node = event->target()->toNode();
    ASSERT(node);
    Frame* frame = node->document()->frame();
    ASSERT(frame);

    const PlatformKeyboardEvent* platformEvent = event->keyEvent();
    if (!platformEvent)
        return;

    KeyBindingTranslator::EventType type = event->type() == eventNames().keydownEvent ?
                                           KeyBindingTranslator::KeyDown : KeyBindingTranslator::KeyPress;
    m_keyBindingTranslator.getEditorCommandsForKeyEvent(platformEvent->gdkEventKey(), type, m_pendingEditorCommands);
    if (m_pendingEditorCommands.size() > 0) {

        // During RawKeyDown events if an editor command will insert text, defer
        // the insertion until the keypress event. We want keydown to bubble up
        // through the DOM first.
        if (platformEvent->type() == PlatformKeyboardEvent::RawKeyDown) {
            if (executePendingEditorCommands(frame, false))
                event->setDefaultHandled();

            return;
        }

        // Only allow text insertion commands if the current node is editable.
        if (executePendingEditorCommands(frame, frame->editor()->canEdit())) {
            event->setDefaultHandled();
            return;
        }
    }

    // Don't allow text insertion for nodes that cannot edit.
    if (!frame->editor()->canEdit())
        return;

    // This is just a normal text insertion, so wait to execute the insertion
    // until a keypress event happens. This will ensure that the insertion will not
    // be reflected in the contents of the field until the keyup DOM event.
    if (event->type() == eventNames().keypressEvent) {

        // If we have a pending composition at this point, it happened while
        // filtering a keypress, so we treat it as a normal text insertion.
        // This will also ensure that if the keypress event handler changed the
        // currently focused node, the text is still inserted into the original
        // node (insertText() has this logic, but confirmComposition() does not).
        if (m_pendingComposition) {
            frame->editor()->insertText(String::fromUTF8(m_pendingComposition.get()), event);
            clearPendingComposition();
            event->setDefaultHandled();

        } else {
            // Don't insert null or control characters as they can result in unexpected behaviour
            if (event->charCode() < ' ')
                return;

            // Don't insert anything if a modifier is pressed
            if (platformEvent->ctrlKey() || platformEvent->altKey())
                return;

            if (frame->editor()->insertText(platformEvent->text(), event))
                event->setDefaultHandled();
        }
    }
}