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Merge "[PB5] Store state in a more convenient manner"

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This commit is contained in:
Jean Chalard 2013-04-25 02:44:46 +00:00 committed by Android (Google) Code Review
commit e91387e281
2 changed files with 47 additions and 11 deletions
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39
java/src/com/android/inputmethod/dictionarypack/DictionaryListInterfaceState.java
View file

@ -16,9 +16,46 @@
package com.android.inputmethod.dictionarypack;
import com.android.inputmethod.latin.CollectionUtils;
import java.util.HashMap;
/**
* Helper class to maintain the interface state of word list preferences.
*
* This is necessary because the views are created on-demand by calling code. There are many
* situations where views are renewed with little relation with user interaction. For example,
* when scrolling, the view is reused so it doesn't keep its state, which means we need to keep
* it separately. Also whenever the underlying dictionary list undergoes a change (for example,
* update the metadata, or finish downloading) the whole list has to be thrown out and recreated
* in case some dictionaries appeared, disappeared, changed states etc.
*/
public class DictionaryListInterfaceState {
public String mLastClickedId = null;
private static class State {
public boolean mOpen = false;
public int mStatus = MetadataDbHelper.STATUS_UNKNOWN;
}
private HashMap<String, State> mWordlistToState = CollectionUtils.newHashMap();
public boolean isOpen(final String wordlistId) {
final State state = mWordlistToState.get(wordlistId);
if (null == state) return false;
return state.mOpen;
}
public void setOpen(final String wordlistId, final int status) {
final State newState;
final State state = mWordlistToState.get(wordlistId);
newState = null == state ? new State() : state;
newState.mOpen = true;
newState.mStatus = status;
mWordlistToState.put(wordlistId, newState);
}
public void closeAll() {
for (final State state : mWordlistToState.values()) {
state.mOpen = false;
}
}
}

19
java/src/com/android/inputmethod/dictionarypack/WordListPreference.java
View file

@ -194,9 +194,7 @@ public final class WordListPreference extends Preference {
((ViewGroup)view).setLayoutTransition(null);
final Button button = (Button)view.findViewById(R.id.wordlist_button);
button.setText(getButtonLabel(mStatus));
// String identity match. This is an ==, not an .equals, on purpose.
button.setVisibility(mWordlistId == mInterfaceState.mLastClickedId
? View.VISIBLE : View.INVISIBLE);
button.setVisibility(mInterfaceState.isOpen(mWordlistId) ? View.VISIBLE : View.INVISIBLE);
button.setOnClickListener(mActionButtonClickHandler);
view.setOnClickListener(mPreferenceClickHandler);
}
@ -210,15 +208,16 @@ public final class WordListPreference extends Preference {
if (!(parent instanceof ListView)) return;
final ListView listView = (ListView)parent;
final int indexToOpen;
if (mInterfaceState.mLastClickedId == mWordlistId) {
// This button was being shown. Clear last state to record that there isn't a
// displayed button any more, and note that we don't want to open any button.
mInterfaceState.mLastClickedId = null;
// Close all first, we'll open back any item that needs to be open.
mInterfaceState.closeAll();
if (mInterfaceState.isOpen(mWordlistId)) {
// This button being shown. Take note that we don't want to open any button in the
// loop below.
indexToOpen = -1;
} else {
// This button was not being shown. Mark it as the latest selected button, and
// remember the index of this child as the one to open in the following loop.
mInterfaceState.mLastClickedId = mWordlistId;
// This button was not being shown. Open it, and remember the index of this
// child as the one to open in the following loop.
mInterfaceState.setOpen(mWordlistId, mStatus);
indexToOpen = listView.indexOfChild(v);
}
final int lastDisplayedIndex =