ABP/Android preferences UI

src/org/adblockplus/android/SummarizedPreferences.java

Index: src/org/adblockplus/android/SummarizedPreferences.java
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new file mode 100644
--- /dev/null
+++ b/src/org/adblockplus/android/SummarizedPreferences.java
@@ -0,0 +1,74 @@
+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);
+			}
+		}
+	}
+
+}