diff options
Diffstat (limited to 'OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/widget/ExpandableListFragment.java')
| -rw-r--r-- | OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/widget/ExpandableListFragment.java | 530 |
1 files changed, 0 insertions, 530 deletions
diff --git a/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/widget/ExpandableListFragment.java b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/widget/ExpandableListFragment.java deleted file mode 100644 index 54022342f..000000000 --- a/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/widget/ExpandableListFragment.java +++ /dev/null @@ -1,530 +0,0 @@ -/* - * 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 org.sufficientlysecure.keychain.ui.widget; - -import android.content.Context; -import android.os.Bundle; -import android.os.Handler; -import android.support.v4.app.Fragment; -import android.view.ContextMenu; -import android.view.ContextMenu.ContextMenuInfo; -import android.view.Gravity; -import android.view.LayoutInflater; -import android.view.View; -import android.view.View.OnCreateContextMenuListener; -import android.view.ViewGroup; -import android.view.animation.AnimationUtils; -import android.widget.AdapterView; -import android.widget.ExpandableListAdapter; -import android.widget.ExpandableListView; -import android.widget.FrameLayout; -import android.widget.LinearLayout; -import android.widget.ListAdapter; -import android.widget.ProgressBar; -import android.widget.TextView; - -/** - * @author Khoa Tran - * - * @see android.support.v4.app.ListFragment - * @see android.app.ExpandableListActivity - * - * ExpandableListFragment for Android < 3.0 - * - * from - * http://stackoverflow.com/questions/6051050/expandablelistfragment-with-loadermanager-for- - * compatibility-package - * - */ -public class ExpandableListFragment extends Fragment implements OnCreateContextMenuListener, - ExpandableListView.OnChildClickListener, ExpandableListView.OnGroupCollapseListener, - ExpandableListView.OnGroupExpandListener { - - static final int INTERNAL_EMPTY_ID = 0x00ff0001; - static final int INTERNAL_PROGRESS_CONTAINER_ID = 0x00ff0002; - static final int INTERNAL_LIST_CONTAINER_ID = 0x00ff0003; - - final private Handler mHandler = new Handler(); - - final private Runnable mRequestFocus = new Runnable() { - public void run() { - mExpandableList.focusableViewAvailable(mExpandableList); - } - }; - - final private AdapterView.OnItemClickListener mOnClickListener = new AdapterView.OnItemClickListener() { - public void onItemClick(AdapterView<?> parent, View v, int position, long id) { - onListItemClick((ExpandableListView) parent, v, position, id); - } - }; - - ExpandableListAdapter mAdapter; - ExpandableListView mExpandableList; - boolean mFinishedStart = false; - View mEmptyView; - TextView mStandardEmptyView; - View mProgressContainer; - View mExpandableListContainer; - CharSequence mEmptyText; - boolean mExpandableListShown; - - public ExpandableListFragment() { - } - - /** - * Provide default implementation to return a simple list view. Subclasses can override to - * replace with their own layout. If doing so, the returned view hierarchy <em>must</em> have a - * ListView whose id is {@link android.R.id#list android.R.id.list} and can optionally have a - * sibling view id {@link android.R.id#empty android.R.id.empty} that is to be shown when the - * list is empty. - * - * <p> - * If you are overriding this method with your own custom content, consider including the - * standard layout {@link android.R.layout#list_content} in your layout file, so that you - * continue to retain all of the standard behavior of ListFragment. In particular, this is - * currently the only way to have the built-in indeterminant progress state be shown. - */ - @Override - public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { - final Context context = getActivity(); - - FrameLayout root = new FrameLayout(context); - - // ------------------------------------------------------------------ - - LinearLayout pframe = new LinearLayout(context); - pframe.setId(INTERNAL_PROGRESS_CONTAINER_ID); - pframe.setOrientation(LinearLayout.VERTICAL); - pframe.setVisibility(View.GONE); - pframe.setGravity(Gravity.CENTER); - - ProgressBar progress = new ProgressBar(context, null, android.R.attr.progressBarStyleLarge); - pframe.addView(progress, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, - ViewGroup.LayoutParams.WRAP_CONTENT)); - - root.addView(pframe, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, - ViewGroup.LayoutParams.MATCH_PARENT)); - - // ------------------------------------------------------------------ - - FrameLayout lframe = new FrameLayout(context); - lframe.setId(INTERNAL_LIST_CONTAINER_ID); - - TextView tv = new TextView(getActivity()); - tv.setId(INTERNAL_EMPTY_ID); - tv.setGravity(Gravity.CENTER); - lframe.addView(tv, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, - ViewGroup.LayoutParams.MATCH_PARENT)); - - ExpandableListView lv = new ExpandableListView(getActivity()); - lv.setId(android.R.id.list); - lv.setDrawSelectorOnTop(false); - lframe.addView(lv, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, - ViewGroup.LayoutParams.MATCH_PARENT)); - - root.addView(lframe, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, - ViewGroup.LayoutParams.MATCH_PARENT)); - - // ------------------------------------------------------------------ - - root.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, - ViewGroup.LayoutParams.MATCH_PARENT)); - - return root; - } - - /** - * Attach to list view once the view hierarchy has been created. - */ - @Override - public void onViewCreated(View view, Bundle savedInstanceState) { - super.onViewCreated(view, savedInstanceState); - ensureList(); - } - - /** - * Detach from list view. - */ - @Override - public void onDestroyView() { - mHandler.removeCallbacks(mRequestFocus); - mExpandableList = null; - mExpandableListShown = false; - mEmptyView = mProgressContainer = mExpandableListContainer = null; - mStandardEmptyView = null; - super.onDestroyView(); - } - - /** - * This method will be called when an item in the list is selected. Subclasses should override. - * Subclasses can call getListView().getItemAtPosition(position) if they need to access the data - * associated with the selected item. - * - * @param l - * The ListView where the click happened - * @param v - * The view that was clicked within the ListView - * @param position - * The position of the view in the list - * @param id - * The row id of the item that was clicked - */ - public void onListItemClick(ExpandableListView l, View v, int position, long id) { - } - - /** - * Provide the cursor for the list view. - */ - public void setListAdapter(ExpandableListAdapter adapter) { - boolean hadAdapter = mAdapter != null; - mAdapter = adapter; - if (mExpandableList != null) { - mExpandableList.setAdapter(adapter); - if (!mExpandableListShown && !hadAdapter) { - // The list was hidden, and previously didn't have an - // adapter. It is now time to show it. - setListShown(true, getView().getWindowToken() != null); - } - } - } - - /** - * Set the currently selected list item to the specified position with the adapter's data - * - * @param position - */ - public void setSelection(int position) { - ensureList(); - mExpandableList.setSelection(position); - } - - /** - * Get the position of the currently selected list item. - */ - public int getSelectedItemPosition() { - ensureList(); - return mExpandableList.getSelectedItemPosition(); - } - - /** - * Get the cursor row ID of the currently selected list item. - */ - public long getSelectedItemId() { - ensureList(); - return mExpandableList.getSelectedItemId(); - } - - /** - * Get the activity's list view widget. - */ - public ExpandableListView getListView() { - ensureList(); - return mExpandableList; - } - - /** - * The default content for a ListFragment has a TextView that can be shown when the list is - * empty. If you would like to have it shown, call this method to supply the text it should use. - */ - public void setEmptyText(CharSequence text) { - ensureList(); - if (mStandardEmptyView == null) { - throw new IllegalStateException("Can't be used with a custom content view"); - } - mStandardEmptyView.setText(text); - if (mEmptyText == null) { - mExpandableList.setEmptyView(mStandardEmptyView); - } - mEmptyText = text; - } - - /** - * Control whether the list is being displayed. You can make it not displayed if you are waiting - * for the initial data to show in it. During this time an indeterminant progress indicator will - * be shown instead. - * - * <p> - * Applications do not normally need to use this themselves. The default behavior of - * ListFragment is to start with the list not being shown, only showing it once an adapter is - * given with {@link #setListAdapter(ListAdapter)}. If the list at that point had not been - * shown, when it does get shown it will be do without the user ever seeing the hidden state. - * - * @param shown - * If true, the list view is shown; if false, the progress indicator. The initial - * value is true. - */ - public void setListShown(boolean shown) { - setListShown(shown, true); - } - - /** - * Like {@link #setListShown(boolean)}, but no animation is used when transitioning from the - * previous state. - */ - public void setListShownNoAnimation(boolean shown) { - setListShown(shown, false); - } - - /** - * Control whether the list is being displayed. You can make it not displayed if you are waiting - * for the initial data to show in it. During this time an indeterminant progress indicator will - * be shown instead. - * - * @param shown - * If true, the list view is shown; if false, the progress indicator. The initial - * value is true. - * @param animate - * If true, an animation will be used to transition to the new state. - */ - private void setListShown(boolean shown, boolean animate) { - ensureList(); - if (mProgressContainer == null) { - throw new IllegalStateException("Can't be used with a custom content view"); - } - if (mExpandableListShown == shown) { - return; - } - mExpandableListShown = shown; - if (shown) { - if (animate) { - mProgressContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), - android.R.anim.fade_out)); - mExpandableListContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), - android.R.anim.fade_in)); - } else { - mProgressContainer.clearAnimation(); - mExpandableListContainer.clearAnimation(); - } - mProgressContainer.setVisibility(View.GONE); - mExpandableListContainer.setVisibility(View.VISIBLE); - } else { - if (animate) { - mProgressContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), - android.R.anim.fade_in)); - mExpandableListContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), - android.R.anim.fade_out)); - } else { - mProgressContainer.clearAnimation(); - mExpandableListContainer.clearAnimation(); - } - mProgressContainer.setVisibility(View.VISIBLE); - mExpandableListContainer.setVisibility(View.GONE); - } - } - - /** - * Get the ListAdapter associated with this activity's ListView. - */ - public ExpandableListAdapter getListAdapter() { - return mAdapter; - } - - private void ensureList() { - if (mExpandableList != null) { - return; - } - View root = getView(); - if (root == null) { - throw new IllegalStateException("Content view not yet created"); - } - if (root instanceof ExpandableListView) { - mExpandableList = (ExpandableListView) root; - } else { - mStandardEmptyView = (TextView) root.findViewById(INTERNAL_EMPTY_ID); - if (mStandardEmptyView == null) { - mEmptyView = root.findViewById(android.R.id.empty); - } else { - mStandardEmptyView.setVisibility(View.GONE); - } - mProgressContainer = root.findViewById(INTERNAL_PROGRESS_CONTAINER_ID); - mExpandableListContainer = root.findViewById(INTERNAL_LIST_CONTAINER_ID); - View rawExpandableListView = root.findViewById(android.R.id.list); - if (!(rawExpandableListView instanceof ExpandableListView)) { - if (rawExpandableListView == null) { - throw new RuntimeException( - "Your content must have a ListView whose id attribute is " - + "'android.R.id.list'"); - } - throw new RuntimeException( - "Content has view with id attribute 'android.R.id.list' " - + "that is not a ListView class"); - } - mExpandableList = (ExpandableListView) rawExpandableListView; - if (mEmptyView != null) { - mExpandableList.setEmptyView(mEmptyView); - } else if (mEmptyText != null) { - mStandardEmptyView.setText(mEmptyText); - mExpandableList.setEmptyView(mStandardEmptyView); - } - } - mExpandableListShown = true; - mExpandableList.setOnItemClickListener(mOnClickListener); - if (mAdapter != null) { - ExpandableListAdapter adapter = mAdapter; - mAdapter = null; - setListAdapter(adapter); - } else { - // We are starting without an adapter, so assume we won't - // have our data right away and start with the progress indicator. - if (mProgressContainer != null) { - setListShown(false, false); - } - } - mHandler.post(mRequestFocus); - } - - /** - * Override this to populate the context menu when an item is long pressed. menuInfo will - * contain an {@link android.widget.ExpandableListView.ExpandableListContextMenuInfo} whose - * packedPosition is a packed position that should be used with - * {@link ExpandableListView#getPackedPositionType(long)} and the other similar methods. - * <p> - * {@inheritDoc} - */ - @Override - public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { - } - - /** - * Override this for receiving callbacks when a child has been clicked. - * <p> - * {@inheritDoc} - */ - public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, - int childPosition, long id) { - return false; - } - - /** - * Override this for receiving callbacks when a group has been collapsed. - */ - public void onGroupCollapse(int groupPosition) { - } - - /** - * Override this for receiving callbacks when a group has been expanded. - */ - public void onGroupExpand(int groupPosition) { - } - - // /** - // * Ensures the expandable list view has been created before Activity restores all - // * of the view states. - // * - // *@see Activity#onRestoreInstanceState(Bundle) - // */ - // @Override - // protected void onRestoreInstanceState(Bundle state) { - // ensureList(); - // super.onRestoreInstanceState(state); - // } - - /** - * Updates the screen state (current list and other views) when the content changes. - * - * @see Activity#onContentChanged() - */ - - public void onContentChanged() { - // super.onContentChanged(); - View emptyView = getView().findViewById(android.R.id.empty); - mExpandableList = (ExpandableListView) getView().findViewById(android.R.id.list); - if (mExpandableList == null) { - throw new RuntimeException( - "Your content must have a ExpandableListView whose id attribute is " - + "'android.R.id.list'"); - } - if (emptyView != null) { - mExpandableList.setEmptyView(emptyView); - } - mExpandableList.setOnChildClickListener(this); - mExpandableList.setOnGroupExpandListener(this); - mExpandableList.setOnGroupCollapseListener(this); - - if (mFinishedStart) { - setListAdapter(mAdapter); - } - mFinishedStart = true; - } - - /** - * Get the activity's expandable list view widget. This can be used to get the selection, set - * the selection, and many other useful functions. - * - * @see ExpandableListView - */ - public ExpandableListView getExpandableListView() { - ensureList(); - return mExpandableList; - } - - /** - * Get the ExpandableListAdapter associated with this activity's ExpandableListView. - */ - public ExpandableListAdapter getExpandableListAdapter() { - return mAdapter; - } - - /** - * Gets the ID of the currently selected group or child. - * - * @return The ID of the currently selected group or child. - */ - public long getSelectedId() { - return mExpandableList.getSelectedId(); - } - - /** - * Gets the position (in packed position representation) of the currently selected group or - * child. Use {@link ExpandableListView#getPackedPositionType}, - * {@link ExpandableListView#getPackedPositionGroup}, and - * {@link ExpandableListView#getPackedPositionChild} to unpack the returned packed position. - * - * @return A packed position representation containing the currently selected group or child's - * position and type. - */ - public long getSelectedPosition() { - return mExpandableList.getSelectedPosition(); - } - - /** - * Sets the selection to the specified child. If the child is in a collapsed group, the group - * will only be expanded and child subsequently selected if shouldExpandGroup is set to true, - * otherwise the method will return false. - * - * @param groupPosition - * The position of the group that contains the child. - * @param childPosition - * The position of the child within the group. - * @param shouldExpandGroup - * Whether the child's group should be expanded if it is collapsed. - * @return Whether the selection was successfully set on the child. - */ - public boolean setSelectedChild(int groupPosition, int childPosition, boolean shouldExpandGroup) { - return mExpandableList.setSelectedChild(groupPosition, childPosition, shouldExpandGroup); - } - - /** - * Sets the selection to the specified group. - * - * @param groupPosition - * The position of the group that should be selected. - */ - public void setSelectedGroup(int groupPosition) { - mExpandableList.setSelectedGroup(groupPosition); - } -}
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