1 files changed, 107 insertions, 0 deletions
diff --git a/src/com/android/browser/preferences/WebViewPreview.java b/src/com/android/browser/preferences/WebViewPreview.java
new file mode 100644
index 0000000..15dc83a
--- /dev/null
+++ b/src/com/android/browser/preferences/WebViewPreview.java
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+/*
+ * 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.android.browser.preferences;
+
+import com.android.browser.BrowserSettings;
+import com.android.browser.R;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.content.res.Resources;
+import android.preference.Preference;
+import android.preference.PreferenceManager;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+
+public class WebViewPreview extends Preference implements OnSharedPreferenceChangeListener {
+
+    // 80 char line width limit? Rules are made to be broken.
+    static final String HTML_FORMAT = "<html><head><style type=\"text/css\">p { margin: 2px auto;}</style><body><p style=\"font-size: .4em\">%s</p><p style=\"font-size: .7em\">%s</p><p style=\"font-size: 1em\">%s</p><p style=\"font-size: 1.3em\">%s</p><p style=\"font-size: 1.6em\">%s</p></body></html>";
+
+    String HTML;
+    private View mRoot;
+    private WebView mWebView;
+
+    public WebViewPreview(
+            Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        init(context);
+    }
+
+    public WebViewPreview(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context);
+    }
+
+    public WebViewPreview(Context context) {
+        super(context);
+        init(context);
+    }
+
+    void init(Context context) {
+        Resources res = context.getResources();
+        Object[] visualNames = res.getStringArray(R.array.pref_text_size_choices);
+        HTML = String.format(HTML_FORMAT, visualNames);
+    }
+
+    void updatePreview() {
+        if (mWebView == null) return;
+
+        BrowserSettings.getInstance().syncSharedPreferences(getContext(),
+                PreferenceManager.getDefaultSharedPreferences(getContext()));
+        WebSettings ws = mWebView.getSettings();
+        BrowserSettings bs = BrowserSettings.getInstance();
+        ws.setMinimumFontSize(bs.getMinimumFontSize());
+        ws.setTextSize(bs.getTextSize());
+        mWebView.loadData(HTML, "text/html", "utf-8");
+    }
+
+    @Override
+    public View getView(View convertView, ViewGroup parent) {
+        if (mWebView == null) {
+            LayoutInflater inflater = LayoutInflater.from(getContext());
+            mRoot = inflater.inflate(R.layout.webview_preview, parent, false);
+            mWebView = (WebView) mRoot.findViewById(R.id.webview);
+        }
+        updatePreview();
+        return mRoot;
+    }
+
+    @Override
+    protected void onAttachedToHierarchy(PreferenceManager preferenceManager) {
+        super.onAttachedToHierarchy(preferenceManager);
+        getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    protected void onPrepareForRemoval() {
+        getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
+        super.onPrepareForRemoval();
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(
+            SharedPreferences sharedPreferences, String key) {
+        updatePreview();
+    }
+
+}