Preferences: Cleanup

Change-Id: I8973c8c043755ed01e1bb6107b09bb0eb734e66a

1 files changed, 202 insertions, 10 deletions

diff --git a/src/com/cyanogenmod/trebuchet/preference/Preferences.java b/src/com/cyanogenmod/trebuchet/preference/Preferences.java
index d4013a25c..abb692115 100644
--- a/src/com/cyanogenmod/trebuchet/preference/Preferences.java
+++ b/src/com/cyanogenmod/trebuchet/preference/Preferences.java
@@ -18,47 +18,239 @@ package com.cyanogenmod.trebuchet.preference;
 
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.content.res.Resources;
 import android.os.Bundle;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
+import android.preference.PreferenceFragment;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ImageView;
+import android.widget.ListAdapter;
+import android.widget.TextView;
 
+import com.cyanogenmod.trebuchet.LauncherApplication;
 import com.cyanogenmod.trebuchet.R;
 
+import java.util.List;
+
 public class Preferences extends PreferenceActivity
         implements SharedPreferences.OnSharedPreferenceChangeListener {
 
     private static final String TAG = "Trebuchet.Preferences";
 
-    private SharedPreferences mPrefs;
+    private SharedPreferences mPreferences;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        addPreferencesFromResource(R.xml.preferences);
-
-        mPrefs = getSharedPreferences(PreferencesProvider.PREFERENCES_KEY,
+        mPreferences = getSharedPreferences(PreferencesProvider.PREFERENCES_KEY,
                 Context.MODE_PRIVATE);
-
-        Preference version = findPreference("application_version");
-        version.setTitle(getString(R.string.application_name) + " " + getString(R.string.application_version));
     }
 
     @Override
     protected void onResume() {
         super.onResume();
-        mPrefs.registerOnSharedPreferenceChangeListener(this);
+        mPreferences.registerOnSharedPreferenceChangeListener(this);
     }
 
     @Override
     protected void onPause() {
-        mPrefs.unregisterOnSharedPreferenceChangeListener(this);
         super.onPause();
+        mPreferences.unregisterOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onBuildHeaders(List<Header> target) {
+        loadHeadersFromResource(R.xml.preferences_headers, target);
+        updateHeaders(target);
     }
 
+    private void updateHeaders(List<Header> headers) {
+        int i = 0;
+        while (i < headers.size()) {
+            Header header = headers.get(i);
+
+            // Version preference
+            if (header.id == R.id.preferences_application_version) {
+                header.title = getString(R.string.application_name) + " " + getString(R.string.application_version);
+            }
+
+            // Remove dock header on tablets
+            if (LauncherApplication.isScreenLarge() && header.id == R.id.preferences_dock_section) {
+                headers.remove(header);
+            }
+
+            // Increment if not removed
+            if (headers.get(i) == header) {
+                i++;
+            }
+        }
+    }
+
+    @Override
+    public void setListAdapter(ListAdapter adapter) {
+        if (adapter == null) {
+            super.setListAdapter(null);
+        } else {
+            super.setListAdapter(new HeaderAdapter(this, getHeaders()));
+        }
+    }
+
+    @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-        SharedPreferences.Editor editor = mPrefs.edit();
+        SharedPreferences.Editor editor = mPreferences.edit();
         editor.putBoolean(PreferencesProvider.PREFERENCES_CHANGED, true);
         editor.commit();
     }
 
+    public static class HomescreenFragment extends PreferenceFragment {
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            addPreferencesFromResource(R.xml.preferences_homescreen);
+        }
+    }
+
+    public static class DrawerFragment extends PreferenceFragment {
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            addPreferencesFromResource(R.xml.preferences_drawer);
+        }
+    }
+
+    public static class DockFragment extends PreferenceFragment {
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            addPreferencesFromResource(R.xml.preferences_dock);
+        }
+    }
+
+    public static class GeneralFragment extends PreferenceFragment {
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+
+            addPreferencesFromResource(R.xml.preferences_general);
+        }
+    }
+
+    private static class HeaderAdapter extends ArrayAdapter<Header> {
+        private static final int HEADER_TYPE_NORMAL = 0;
+        private static final int HEADER_TYPE_CATEGORY = 1;
+
+        private static final int HEADER_TYPE_COUNT = HEADER_TYPE_CATEGORY + 1;
+
+        private static class HeaderViewHolder {
+            ImageView icon;
+            TextView title;
+            TextView summary;
+        }
+
+        private LayoutInflater mInflater;
+
+        static int getHeaderType(Header header) {
+            if (header.id == R.id.preferences_application_section) {
+                return HEADER_TYPE_CATEGORY;
+            } else {
+                return HEADER_TYPE_NORMAL;
+            }
+        }
+
+        @Override
+        public int getItemViewType(int position) {
+            Header header = getItem(position);
+            return getHeaderType(header);
+        }
+
+        @Override
+        public boolean areAllItemsEnabled() {
+            return false; // because of categories
+        }
+
+        @Override
+        public boolean isEnabled(int position) {
+            return getItemViewType(position) != HEADER_TYPE_CATEGORY;
+        }
+
+        @Override
+        public int getViewTypeCount() {
+            return HEADER_TYPE_COUNT;
+        }
+
+        @Override
+        public boolean hasStableIds() {
+            return true;
+        }
+
+        public HeaderAdapter(Context context, List<Header> objects) {
+            super(context, 0, objects);
+
+            mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            HeaderViewHolder holder;
+            Header header = getItem(position);
+            int headerType = getHeaderType(header);
+            View view = null;
+
+            if (convertView == null) {
+                holder = new HeaderViewHolder();
+                switch (headerType) {
+                    case HEADER_TYPE_CATEGORY:
+                        view = new TextView(getContext(), null,
+                                android.R.attr.listSeparatorTextViewStyle);
+                        holder.title = (TextView) view;
+                        break;
+
+                    case HEADER_TYPE_NORMAL:
+                        view = mInflater.inflate(
+                                R.layout.preference_header_item, parent,
+                                false);
+                        holder.icon = (ImageView) view.findViewById(R.id.icon);
+                        holder.title = (TextView)
+                                view.findViewById(com.android.internal.R.id.title);
+                        holder.summary = (TextView)
+                                view.findViewById(com.android.internal.R.id.summary);
+                        break;
+                }
+                view.setTag(holder);
+            } else {
+                view = convertView;
+                holder = (HeaderViewHolder) view.getTag();
+            }
+
+            // All view fields must be updated every time, because the view may be recycled
+            switch (headerType) {
+                case HEADER_TYPE_CATEGORY:
+                    holder.title.setText(header.getTitle(getContext().getResources()));
+                    break;
+
+                case HEADER_TYPE_NORMAL:
+                    holder.icon.setImageResource(header.iconRes);
+                    holder.title.setText(header.getTitle(getContext().getResources()));
+                    CharSequence summary = header.getSummary(getContext().getResources());
+                    if (!TextUtils.isEmpty(summary)) {
+                        holder.summary.setVisibility(View.VISIBLE);
+                        holder.summary.setText(summary);
+                    } else {
+                        holder.summary.setVisibility(View.GONE);
+                    }
+                    break;
+            }
+
+            return view;
+        }
+    }
 }