1 files changed, 64 insertions, 0 deletions
diff --git a/src/com/android/browser/BrowserHomepagePreference.java b/src/com/android/browser/BrowserHomepagePreference.java
new file mode 100644
index 00000000..d4708c30
--- /dev/null
+++ b/src/com/android/browser/BrowserHomepagePreference.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2008 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.android.browser;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.preference.EditTextPreference;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.text.util.Regex;
+import android.util.AttributeSet;
+
+public class BrowserHomepagePreference extends EditTextPreference implements
+        TextWatcher {
+
+    public BrowserHomepagePreference(Context context, AttributeSet attrs,
+            int defStyle) {
+        super(context, attrs, defStyle);
+        getEditText().addTextChangedListener(this);
+    }
+
+    public BrowserHomepagePreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        getEditText().addTextChangedListener(this);
+    }
+
+    public BrowserHomepagePreference(Context context) {
+        super(context);
+        getEditText().addTextChangedListener(this);
+    }
+
+    public void afterTextChanged(Editable s) {
+        AlertDialog dialog = (AlertDialog) getDialog();
+        // This callback is called before the dialog has been fully constructed
+        if (dialog != null) {
+            String url = s.toString();
+            dialog.getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(
+                    url.length() == 0 || url.equals("about:blank") ||
+                    Regex.WEB_URL_PATTERN.matcher(url).matches());
+        }
+    }
+
+    public void beforeTextChanged(CharSequence s, int start, int count,
+            int after) {
+    }
+
+    public void onTextChanged(CharSequence s, int start, int before, int count) {
+    }
+}