ABP/Android preferences UI

src/org/adblockplus/android/SummarizedPreferences.java

+package org.adblockplus.android;
+
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.preference.EditTextPreference;
+import android.preference.ListPreference;
+import android.preference.Preference;
+import android.preference.PreferenceActivity;
+import android.preference.PreferenceGroup;
+import android.preference.PreferenceScreen;
+
+public class SummarizedPreferences extends PreferenceActivity implements OnSharedPreferenceChangeListener
+{
+        @Override
+        public void onResume()
+        {
+                super.onResume();
+                // initialize list summaries

[Felix Dahlke, 2012/09/18 15:32:49]

I don't think this comment is necessary.

+                initSummaries(getPreferenceScreen());
+                getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
+        }
+
+        @Override
+        public void onPause()
+        {
+                super.onPause();
+                getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
+        }
+
+        @Override
+        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key)
+        {
+                Preference pref = findPreference(key);
+                setPrefSummary(pref);
+        }
+
+        protected void setPrefSummary(Preference pref)
+        {
+                if (pref instanceof ListPreference)
+                {
+                        CharSequence summary = ((ListPreference) pref).getEntry();
+                        if (summary != null)
+                        {
+                                pref.setSummary(summary);
+                        }
+                }
+                if (pref instanceof EditTextPreference)
+                {
+                        CharSequence summary = ((EditTextPreference) pref).getText();
+                        if (summary != null)
+                        {
+                                pref.setSummary(summary);
+                        }
+                }
+        }
+
+        protected void initSummaries(PreferenceGroup preference)
+        {
+                for (int i = preference.getPreferenceCount() - 1; i >= 0; i--)
+                {
+                        Preference pref = preference.getPreference(i);
+
+                        if (pref instanceof PreferenceGroup || pref instanceof PreferenceScreen)
+                        {
+                                initSummaries((PreferenceGroup) pref);
+                        }
+                        else
+                        {
+                                setPrefSummary(pref);
+                        }
+                }
+        }
+
+}