replicant-packages_apps_Email/src/com/android/email/activity/MessageCommandButtonView.java

122 lines
3.9 KiB
Java

/*
* Copyright (C) 2010 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 com.android.email.activity;
import com.android.email.R;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* A View that is shown at the bottom of {@link MessageViewFragment} and contains buttons such
* as "(move to) newer".
*
* This class is meant to hide layout differences between portrait and landscape, if any.
* e.g. We might combine some of the buttons when we have small real estate.
*/
public class MessageCommandButtonView extends LinearLayout implements View.OnClickListener {
/**
* If false, we don't want to show anything, in which case all fields holding a view
* (e.g. {@link #mMoveToNewerButton}) are null.
*/
private boolean mShowPanel;
private View mMoveToNewerButton;
private View mMoveToOlderButton;
private TextView mMessagePosition;
private Callback mCallback = EmptyCallback.INSTANCE;
public interface Callback {
public void onMoveToNewer();
public void onMoveToOlder();
}
private static class EmptyCallback implements Callback {
public static final Callback INSTANCE = new EmptyCallback();
@Override public void onMoveToNewer() {}
@Override public void onMoveToOlder() {}
}
public MessageCommandButtonView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public MessageCommandButtonView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MessageCommandButtonView(Context context) {
super(context);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mMoveToNewerButton = findViewById(R.id.move_to_newer_button);
if (mMoveToNewerButton == null) {
mShowPanel = false;
return;
}
mShowPanel = true;
mMoveToOlderButton = findViewById(R.id.move_to_older_button);
mMessagePosition = (TextView) findViewById(R.id.message_position);
mMoveToNewerButton.setOnClickListener(this);
mMoveToOlderButton.setOnClickListener(this);
}
public void setCallback(Callback callback) {
mCallback = (callback == null) ? EmptyCallback.INSTANCE : callback;
}
public void enableNavigationButtons(boolean enableMoveToNewer, boolean enableMoveToOlder,
int currentPosition, int countMessages) {
if (!mShowPanel) {
return;
}
mMoveToNewerButton.setEnabled(enableMoveToNewer);
mMoveToOlderButton.setEnabled(enableMoveToOlder);
// Show "POSITION of TOTAL"
final String positionOfCount;
if (countMessages == 0) {
positionOfCount = "";
} else {
positionOfCount = getContext().getResources().getString(R.string.position_of_count,
(currentPosition + 1), countMessages);
}
mMessagePosition.setText(positionOfCount);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.move_to_newer_button:
mCallback.onMoveToNewer();
break;
case R.id.move_to_older_button:
mCallback.onMoveToOlder();
break;
}
}
}