/*
* Copyright (C) 2015 Zemin Liu
*
* 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 zemin.notification;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.view.View;
import android.view.animation.Animation;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher;
import java.lang.ref.WeakReference;
/**
*
*/
public class ViewSwitcherWrapper extends ViewWrapper {
private static final String TAG = "zemin.ViewSwitcherWrapper";
public static boolean DBG;
public static final int TRANSITION_TIME = 700;
private Animation mInAnimation;
private Animation mOutAnimation;
private int mInDuration = TRANSITION_TIME;
private int mOutDuration = TRANSITION_TIME;
public ViewSwitcherWrapper(String name) {
super(name);
}
public Animation getInAnimation() {
return mInAnimation;
}
public Animation getOutAnimation() {
return mOutAnimation;
}
public int getInDuration() {
return mInDuration;
}
public int getOutDuration() {
return mOutDuration;
}
public void setInAnimation(Animation animation, int duration) {
mInAnimation = animation;
mInDuration = duration;
updateAnimation();
}
public void setOutAnimation(Animation animation, int duration) {
mOutAnimation = animation;
mOutDuration = duration;
updateAnimation();
}
@Override
public void reset() {
super.reset();
View view = getView();
if (view == null) {
return;
}
ViewSwitcher viewSwitcher = (ViewSwitcher) view;
viewSwitcher.setAnimateFirstView(false);
viewSwitcher.reset();
}
@Override
public void setView(View view) {
super.setView(view);
updateAnimation();
}
@Override
public void setImageDrawable(Drawable drawable, boolean animate) {
View view = getView();
if (view == null) {
return;
}
ImageSwitcher imageSwitcher = (ImageSwitcher) view;
if (animate) {
imageSwitcher.setImageDrawable(drawable);
} else {
ImageView curr = (ImageView) imageSwitcher.getCurrentView();
curr.setImageDrawable(drawable);
}
}
@Override
public void setText(CharSequence text, boolean animate) {
View view = getView();
if (view == null) {
return;
}
TextSwitcher textSwitcher = (TextSwitcher) view;
if (animate) {
textSwitcher.setText(text);
} else {
TextView curr = (TextView) textSwitcher.getCurrentView();
curr.setText(text);
}
//
// waiting for the first layout of SWITCHER to be finished,
// so that we can adjust its size according to its content.
//
// 100 ms
//
schedule(MSG_TEXT_VIEW_ADJUST_HEIGHT, 100);
}
@Override
public void setTextSize(int size) {
View view = getView();
if (view == null) {
return;
}
TextSwitcher textSwitcher = (TextSwitcher) view;
for (int i = 0; i < 2; i++) {
TextView titleView = (TextView) textSwitcher.getChildAt(i);
titleView.setTextSize(size);
}
}
@Override
public void setTextColor(int color) {
View view = getView();
if (view == null) {
return;
}
TextSwitcher textSwitcher = (TextSwitcher) view;
for (int i = 0; i < 2; i++) {
TextView titleView = (TextView) textSwitcher.getChildAt(i);
titleView.setTextColor(color);
}
}
private void updateAnimation() {
View view = getView();
if (view == null) {
return;
}
ViewSwitcher viewSwitcher = (ViewSwitcher) view;
if (viewSwitcher.getInAnimation() != mInAnimation || mInAnimation == null) {
if (mInAnimation == null) {
mInAnimation = AnimationFactory.pushDownIn();
}
if (viewSwitcher instanceof TextSwitcher) {
mInAnimation.setAnimationListener(mTextViewInAnimationListener);
}
mInAnimation.setDuration(mInDuration);
viewSwitcher.setInAnimation(mInAnimation);
}
if (viewSwitcher.getOutAnimation() != mOutAnimation || mOutAnimation == null) {
if (mOutAnimation == null) {
mOutAnimation = AnimationFactory.pushDownOut();
}
mOutAnimation.setDuration(mOutDuration);
viewSwitcher.setOutAnimation(mOutAnimation);
}
}
// TODO: a better way to wrap content of TextView.
private void adjustTextViewHeight() {
View view = getView();
if (view == null) {
return;
}
TextSwitcher textSwitcher = (TextSwitcher) view;
TextView curr = (TextView) textSwitcher.getCurrentView();
TextView next = (TextView) textSwitcher.getNextView();
int currH = curr.getLineCount() * curr.getLineHeight();
int nextH = next.getLineCount() * next.getLineHeight();
if (currH != nextH) {
curr.setHeight(currH);
next.setHeight(currH);
}
}
private final AnimationListener mTextViewInAnimationListener = new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
adjustTextViewHeight();
}
};
// ------------------------------------------------
// handler
private static final int MSG_TEXT_VIEW_ADJUST_HEIGHT = 0;
protected void handleMessage(Message msg) {
switch (msg.what) {
case MSG_TEXT_VIEW_ADJUST_HEIGHT:
adjustTextViewHeight();
break;
}
}
private H mH;
private void cancel(int what) {
final H h = getHandler();
if (what == -1)
h.removeCallbacksAndMessages(null);
else
h.removeMessages(what);
}
private void schedule(int what, int delay) {
final H h = getHandler();
h.removeMessages(what);
h.sendEmptyMessageDelayed(what, delay);
}
private void schedule(int what, int arg1, int arg2, Object obj, int delay) {
final H h = getHandler();
h.removeMessages(what);
h.sendMessageDelayed(h.obtainMessage(what, arg1, arg2, obj), delay);
}
public H getHandler() { if (mH == null) mH = new H(this); return mH; }
private static final class H extends Handler {
private WeakReference<ViewSwitcherWrapper> mView;
H(ViewSwitcherWrapper v) {
super(Looper.getMainLooper());
mView = new WeakReference<ViewSwitcherWrapper>(v);
}
@Override
public void handleMessage(Message msg) {
ViewSwitcherWrapper v = mView.get();
if (v != null) v.handleMessage(msg);
}
}
}
