1 files changed, 105 insertions, 0 deletions
diff --git a/Source/WebCore/editing/gtk/SelectionControllerGtk.cpp b/Source/WebCore/editing/gtk/SelectionControllerGtk.cpp
new file mode 100644
index 0000000..19097b2
--- /dev/null
+++ b/Source/WebCore/editing/gtk/SelectionControllerGtk.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2009 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+ 
+#include "config.h"
+#include "SelectionController.h"
+
+#include "AccessibilityObjectWrapperAtk.h"
+#include "AXObjectCache.h"
+#include "Frame.h"
+#include "RefPtr.h"
+
+#include <gtk/gtk.h>
+
+namespace WebCore {
+
+static void emitTextSelectionChange(AccessibilityObject* object, VisibleSelection selection, int offset)
+{
+    AtkObject* axObject = object->wrapper();
+    if (!axObject || !ATK_IS_TEXT(axObject))
+        return;
+
+    g_signal_emit_by_name(axObject, "text-caret-moved", offset);
+    if (selection.isRange())
+        g_signal_emit_by_name(axObject, "text-selection-changed");
+}
+
+static void maybeEmitTextFocusChange(PassRefPtr<AccessibilityObject> prpObject)
+{
+    // This static variable is needed to keep track of the old object
+    // as per previous calls to this function, in order to properly
+    // decide whether to emit some signals or not.
+    DEFINE_STATIC_LOCAL(RefPtr<AccessibilityObject>, oldObject, ());
+
+    RefPtr<AccessibilityObject> object = prpObject;
+
+    // Ensure the oldObject belongs to the same document that the
+    // current object so further comparisons make sense. Otherwise,
+    // just reset oldObject to 0 so it won't be taken into account in
+    // the immediately following call to this function.
+    if (object && oldObject && oldObject->document() != object->document())
+        oldObject = 0;
+
+    AtkObject* axObject = object ? object->wrapper() : 0;
+    AtkObject* oldAxObject = oldObject ? oldObject->wrapper() : 0;
+
+    if (axObject != oldAxObject) {
+        if (oldAxObject && ATK_IS_TEXT(oldAxObject)) {
+            g_signal_emit_by_name(oldAxObject, "focus-event", false);
+            g_signal_emit_by_name(oldAxObject, "state-change", "focused", false);
+        }
+        if (axObject && ATK_IS_TEXT(axObject)) {
+            g_signal_emit_by_name(axObject, "focus-event", true);
+            g_signal_emit_by_name(axObject, "state-change", "focused", true);
+        }
+    }
+
+    // Update pointer to last focused object.
+    oldObject = object;
+}
+
+
+void SelectionController::notifyAccessibilityForSelectionChange()
+{
+    if (!AXObjectCache::accessibilityEnabled())
+        return;
+
+    // Reset lastFocuseNode and return for no valid selections.
+    if (!m_selection.start().isNotNull() || !m_selection.end().isNotNull())
+        return;
+
+    RenderObject* focusedNode = m_selection.end().node()->renderer();
+    AccessibilityObject* accessibilityObject = m_frame->document()->axObjectCache()->getOrCreate(focusedNode);
+
+    // Need to check this as getOrCreate could return 0,
+    if (!accessibilityObject)
+        return;
+
+    int offset;
+    // Always report the events w.r.t. the non-linked unignored parent. (i.e. ignoreLinks == true).
+    RefPtr<AccessibilityObject> object = objectAndOffsetUnignored(accessibilityObject, offset, true);
+    if (!object)
+        return;
+
+    // Emit relatedsignals.
+    emitTextSelectionChange(object.get(), m_selection, offset);
+    maybeEmitTextFocusChange(object.release());
+}
+
+} // namespace WebCore