Add webkit to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 97 insertions, 0 deletions

diff --git a/webkit/port/platform/StateTrackingString.h b/webkit/port/platform/StateTrackingString.h
new file mode 100644
index 0000000..9c71dec
--- /dev/null
+++ b/webkit/port/platform/StateTrackingString.h
@@ -0,0 +1,97 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef StateTrackingString_h
+#define StateTrackingString_h
+
+#include "config.h"
+#include "String.h"
+
+#include "webkit/glue/webkit_glue.h"
+
+namespace WebCore {
+
+// This string class emulates the necessary calls that the form code makes
+// and notifies the embedder if the value changes. We do not derive from
+// String so that if we don't implement some function that a WebKit merge uses,
+// the build will break instead of us silently missing that set.
+class StateTrackingString {
+public:
+    StateTrackingString(Node* parentNode) : m_parentNode(parentNode) {
+        Notify();
+    }
+    ~StateTrackingString() {
+      // It would be nice to notify here, but when the string is going away,
+      // that means the input element is going away, and we can't get at its
+      // information.
+    }
+
+    void operator=(const StateTrackingString& other) {
+        // Don't copy m_parentNode. StateTrackingString should keep its
+        // parent node in its life time. The other's parent node may be 
+        // deleted.
+        m_string = other.m_string;
+    }
+      
+    void operator=(const char* other) {
+        m_string = other;
+        Notify();
+    }
+    void operator=(const String& other) {
+        m_string = other;
+        Notify();
+    }
+
+    // Things that don't need interception.
+    bool isNull() const {
+        return m_string.isNull();
+    }
+    unsigned length() const {
+        return m_string.length();
+    }
+
+    // It can be magically converted to a string reference when passed to other
+    // functions.
+    operator const String&() const { return m_string; }
+
+private:
+    void Notify() const {
+      webkit_glue::NotifyFormStateChanged(m_parentNode->ownerDocument());
+    }
+
+    // The node that owns this value.
+    Node* m_parentNode;
+
+    // Actual data of this string.
+    String m_string;
+};
+
+}  // namespace WebCore
+
+#endif  // StateTrackingString_h