1 files changed, 90 insertions, 0 deletions
diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/RefPatternBox.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/RefPatternBox.java
new file mode 100644
index 0000000000..0cf5d48881
--- /dev/null
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/RefPatternBox.java
@@ -0,0 +1,90 @@
+// Copyright (C) 2011 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.client.admin;
+
+import com.google.gwt.dom.client.Document;
+import com.google.gwt.event.dom.client.KeyPressEvent;
+import com.google.gwt.event.dom.client.KeyPressHandler;
+import com.google.gwt.text.shared.Parser;
+import com.google.gwt.text.shared.Renderer;
+import com.google.gwt.user.client.ui.ValueBox;
+import com.google.gwtexpui.globalkey.client.GlobalKey;
+
+import java.io.IOException;
+import java.text.ParseException;
+
+public class RefPatternBox extends ValueBox<String> {
+  private static final Renderer<String> RENDERER = new Renderer<String>() {
+    public String render(String ref) {
+      return ref;
+    }
+
+    public void render(String ref, Appendable dst) throws IOException {
+      dst.append(render(ref));
+    }
+  };
+
+  private static final Parser<String> PARSER = new Parser<String>() {
+    public String parse(CharSequence text) throws ParseException {
+      String ref = text.toString();
+
+      if (ref.isEmpty()) {
+        throw new ParseException(Util.C.refErrorEmpty(), 0);
+      }
+
+      if (ref.charAt(0) == '/') {
+        throw new ParseException(Util.C.refErrorBeginSlash(), 0);
+      }
+
+      if (ref.charAt(0) == '^') {
+        if (!ref.startsWith("^refs/")) {
+          ref = "^refs/heads/" + ref.substring(1);
+        }
+      } else if (!ref.startsWith("refs/")) {
+        ref = "refs/heads/" + ref;
+      }
+
+      for (int i = 0; i < ref.length(); i++) {
+        final char c = ref.charAt(i);
+
+        if (c == '/' && 0 < i && ref.charAt(i - 1) == '/') {
+          throw new ParseException(Util.C.refErrorDoubleSlash(), i);
+        }
+
+        if (c == ' ') {
+          throw new ParseException(Util.C.refErrorNoSpace(), i);
+        }
+
+        if (c < ' ') {
+          throw new ParseException(Util.C.refErrorPrintable(), i);
+        }
+      }
+      return ref;
+    }
+  };
+
+  public RefPatternBox() {
+    super(Document.get().createTextInputElement(), RENDERER, PARSER);
+    addKeyPressHandler(GlobalKey.STOP_PROPAGATION);
+    addKeyPressHandler(new KeyPressHandler() {
+      @Override
+      public void onKeyPress(KeyPressEvent event) {
+        if (event.getCharCode() == ' ') {
+          event.preventDefault();
+        }
+      }
+    });
+  }
+}