diff options
Diffstat (limited to 'src/com/android/settings/SettingsPreferenceFragment.java')
| -rw-r--r-- | src/com/android/settings/SettingsPreferenceFragment.java | 239 |
1 files changed, 217 insertions, 22 deletions
diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java index 0a382b5..e87f676 100644 --- a/src/com/android/settings/SettingsPreferenceFragment.java +++ b/src/com/android/settings/SettingsPreferenceFragment.java @@ -16,25 +16,32 @@ package com.android.settings; +import android.app.Activity; import android.app.Dialog; import android.app.DialogFragment; import android.app.Fragment; import android.content.ContentResolver; import android.content.Context; import android.content.DialogInterface; -import android.content.Intent; import android.content.pm.PackageManager; -import android.net.Uri; +import android.database.DataSetObserver; +import android.graphics.drawable.Drawable; import android.os.Bundle; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceFragment; +import android.preference.PreferenceGroupAdapter; import android.text.TextUtils; import android.util.Log; +import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; +import android.view.View; +import android.view.ViewGroup; import android.widget.Button; +import android.widget.ListAdapter; +import android.widget.ListView; /** * Base class for Settings fragments, with some helper functions and dialog management. @@ -44,6 +51,9 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di private static final String TAG = "SettingsPreferenceFragment"; private static final int MENU_HELP = Menu.FIRST + 100; + private static final int DELAY_HIGHLIGHT_DURATION_MILLIS = 600; + + private static final String SAVE_HIGHLIGHTED_KEY = "android:preference_highlighted"; private SettingsDialogFragment mDialogFragment; @@ -52,10 +62,34 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di // Cache the content resolver for async callbacks private ContentResolver mContentResolver; + private String mPreferenceKey; + private boolean mPreferenceHighlighted = false; + private Drawable mHighlightDrawable; + + private ListAdapter mCurrentRootAdapter; + private boolean mIsDataSetObserverRegistered = false; + private DataSetObserver mDataSetObserver = new DataSetObserver() { + @Override + public void onChanged() { + highlightPreferenceIfNeeded(); + } + + @Override + public void onInvalidated() { + highlightPreferenceIfNeeded(); + } + }; + + private ViewGroup mPinnedHeaderFrameLayout; + @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); + if (icicle != null) { + mPreferenceHighlighted = icicle.getBoolean(SAVE_HIGHLIGHTED_KEY); + } + // Prepare help url and enable menu if necessary int helpResource = getHelpResource(); if (helpResource != 0) { @@ -64,6 +98,31 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di } @Override + public View onCreateView(LayoutInflater inflater, ViewGroup container, + Bundle savedInstanceState) { + final View root = super.onCreateView(inflater, container, savedInstanceState); + mPinnedHeaderFrameLayout = (ViewGroup) root.findViewById(R.id.pinned_header); + return root; + } + + public void setPinnedHeaderView(View pinnedHeader) { + mPinnedHeaderFrameLayout.addView(pinnedHeader); + mPinnedHeaderFrameLayout.setVisibility(View.VISIBLE); + } + + public void clearPinnedHeaderView() { + mPinnedHeaderFrameLayout.removeAllViews(); + mPinnedHeaderFrameLayout.setVisibility(View.GONE); + } + + @Override + public void onSaveInstanceState(Bundle outState) { + super.onSaveInstanceState(outState); + + outState.putBoolean(SAVE_HIGHLIGHTED_KEY, mPreferenceHighlighted); + } + + @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (!TextUtils.isEmpty(mHelpUrl)) { @@ -71,6 +130,137 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di } } + @Override + public void onResume() { + super.onResume(); + + final Bundle args = getArguments(); + if (args != null) { + mPreferenceKey = args.getString(SettingsActivity.EXTRA_FRAGMENT_ARG_KEY); + highlightPreferenceIfNeeded(); + } + } + + @Override + protected void onBindPreferences() { + registerObserverIfNeeded(); + } + + @Override + protected void onUnbindPreferences() { + unregisterObserverIfNeeded(); + } + + @Override + public void onStop() { + super.onStop(); + + unregisterObserverIfNeeded(); + } + + public void registerObserverIfNeeded() { + if (!mIsDataSetObserverRegistered) { + if (mCurrentRootAdapter != null) { + mCurrentRootAdapter.unregisterDataSetObserver(mDataSetObserver); + } + mCurrentRootAdapter = getPreferenceScreen().getRootAdapter(); + mCurrentRootAdapter.registerDataSetObserver(mDataSetObserver); + mIsDataSetObserverRegistered = true; + } + } + + public void unregisterObserverIfNeeded() { + if (mIsDataSetObserverRegistered) { + if (mCurrentRootAdapter != null) { + mCurrentRootAdapter.unregisterDataSetObserver(mDataSetObserver); + mCurrentRootAdapter = null; + } + mIsDataSetObserverRegistered = false; + } + } + + public void highlightPreferenceIfNeeded() { + if (isAdded() && !mPreferenceHighlighted &&!TextUtils.isEmpty(mPreferenceKey)) { + highlightPreference(mPreferenceKey); + } + } + + private Drawable getHighlightDrawable() { + if (mHighlightDrawable == null) { + mHighlightDrawable = getActivity().getDrawable(R.drawable.preference_highlight); + } + return mHighlightDrawable; + } + + /** + * Return a valid ListView position or -1 if none is found + */ + private int canUseListViewForHighLighting(String key) { + if (!hasListView()) { + return -1; + } + + ListView listView = getListView(); + ListAdapter adapter = listView.getAdapter(); + + if (adapter != null && adapter instanceof PreferenceGroupAdapter) { + return findListPositionFromKey(adapter, key); + } + + return -1; + } + + private void highlightPreference(String key) { + final Drawable highlight = getHighlightDrawable(); + + final int position = canUseListViewForHighLighting(key); + if (position >= 0) { + mPreferenceHighlighted = true; + + final ListView listView = getListView(); + final ListAdapter adapter = listView.getAdapter(); + + ((PreferenceGroupAdapter) adapter).setHighlightedDrawable(highlight); + ((PreferenceGroupAdapter) adapter).setHighlighted(position); + + listView.post(new Runnable() { + @Override + public void run() { + listView.setSelection(position); + listView.postDelayed(new Runnable() { + @Override + public void run() { + final int index = position - listView.getFirstVisiblePosition(); + if (index >= 0 && index < listView.getChildCount()) { + final View v = listView.getChildAt(index); + final int centerX = v.getWidth() / 2; + final int centerY = v.getHeight() / 2; + highlight.setHotspot(centerX, centerY); + v.setPressed(true); + v.setPressed(false); + } + } + }, DELAY_HIGHLIGHT_DURATION_MILLIS); + } + }); + } + } + + private int findListPositionFromKey(ListAdapter adapter, String key) { + final int count = adapter.getCount(); + for (int n = 0; n < count; n++) { + final Object item = adapter.getItem(n); + if (item instanceof Preference) { + Preference preference = (Preference) item; + final String preferenceKey = preference.getKey(); + if (preferenceKey != null && preferenceKey.equals(key)) { + return n; + } + } + } + return -1; + } + protected void removePreference(String key) { Preference pref = findPreference(key); if (pref != null) { @@ -147,7 +337,7 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di Log.e(TAG, "Old dialog fragment not null!"); } mDialogFragment = new SettingsDialogFragment(this, dialogId); - mDialogFragment.show(getActivity().getFragmentManager(), Integer.toString(dialogId)); + mDialogFragment.show(getChildFragmentManager(), Integer.toString(dialogId)); } public Dialog onCreateDialog(int dialogId) { @@ -236,17 +426,18 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di public Dialog onCreateDialog(Bundle savedInstanceState) { if (savedInstanceState != null) { mDialogId = savedInstanceState.getInt(KEY_DIALOG_ID, 0); + mParentFragment = getParentFragment(); int mParentFragmentId = savedInstanceState.getInt(KEY_PARENT_FRAGMENT_ID, -1); - if (mParentFragmentId > -1) { + if (mParentFragment == null) { mParentFragment = getFragmentManager().findFragmentById(mParentFragmentId); - if (!(mParentFragment instanceof DialogCreatable)) { - throw new IllegalArgumentException( - (mParentFragment != null - ? mParentFragment.getClass().getName() - : mParentFragmentId) - + " must implement " - + DialogCreatable.class.getName()); - } + } + if (!(mParentFragment instanceof DialogCreatable)) { + throw new IllegalArgumentException( + (mParentFragment != null + ? mParentFragment.getClass().getName() + : mParentFragmentId) + + " must implement " + + DialogCreatable.class.getName()); } // This dialog fragment could be created from non-SettingsPreferenceFragment if (mParentFragment instanceof SettingsPreferenceFragment) { @@ -303,19 +494,23 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di getActivity().onBackPressed(); } - public boolean startFragment( - Fragment caller, String fragmentClass, int requestCode, Bundle extras) { - if (getActivity() instanceof PreferenceActivity) { - PreferenceActivity preferenceActivity = (PreferenceActivity)getActivity(); - preferenceActivity.startPreferencePanel(fragmentClass, extras, - R.string.lock_settings_picker_title, null, caller, requestCode); + public boolean startFragment(Fragment caller, String fragmentClass, int titleRes, + int requestCode, Bundle extras) { + final Activity activity = getActivity(); + if (activity instanceof SettingsActivity) { + SettingsActivity sa = (SettingsActivity) activity; + sa.startPreferencePanel(fragmentClass, extras, titleRes, null, caller, requestCode); + return true; + } else if (activity instanceof PreferenceActivity) { + PreferenceActivity sa = (PreferenceActivity) activity; + sa.startPreferencePanel(fragmentClass, extras, titleRes, null, caller, requestCode); return true; } else { - Log.w(TAG, "Parent isn't PreferenceActivity, thus there's no way to launch the " - + "given Fragment (name: " + fragmentClass + ", requestCode: " + requestCode - + ")"); + Log.w(TAG, + "Parent isn't SettingsActivity nor PreferenceActivity, thus there's no way to " + + "launch the given Fragment (name: " + fragmentClass + + ", requestCode: " + requestCode + ")"); return false; } } - } |