382 lines
10 KiB
Java
382 lines
10 KiB
Java
/*
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* Copyright (C) 2014-2015 Hippo Seven
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.scene;
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import android.content.Intent;
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import android.os.Bundle;
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import android.os.Parcelable;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.util.SparseArray;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.ViewParent;
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import android.view.ViewTreeObserver;
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import android.widget.AbsoluteLayout;
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import android.widget.FrameLayout;
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import com.hippo.util.AssertUtils;
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import com.hippo.util.ViewUtils;
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/**
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* {@link com.hippo.scene.Scene} is a {@code Activity} of {@link android.app.Activity}.
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* <p>
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* When start a new {@code Scene}, previous {@code Scene} can stay at screen for
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* a while. Or retain for a while before destroy.
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*/
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public abstract class Scene {
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static final int SCENE_STATE_CREATE = 0;
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static final int SCENE_STATE_RUN = 1;
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static final int SCENE_STATE_DESTROY = 2;
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static final int SCENE_STATE_OPEN = 3;
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static final int SCENE_STATE_CLOSE = 4;
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static final int SCENE_STATE_PAUSE = 5;
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private @Nullable Curtain mCurtain;
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@SuppressWarnings("deprecation")
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private @Nullable AbsoluteLayout mSceneView;
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private int mBackgroundColor = 0xffeeeeee; // TODO Need a better to set background color
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private int mState;
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private static SceneManager sSceneManager;
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private int mFitPaddingBottom = -1;
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static void setSceneManager(SceneManager sceneManager) {
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sSceneManager = sceneManager;
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}
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void setCurtain(@Nullable Curtain curtain) {
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mCurtain = curtain;
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}
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@Nullable Curtain getCurtain() {
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return mCurtain;
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}
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// If there is no StageActivity for SceneManager, yout will get AssertError
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public @NonNull StageActivity getStageActivity() {
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StageActivity stageActivity = sSceneManager.getStageActivity();
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AssertUtils.assertNotNull("StageActivity is null", stageActivity);
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return stageActivity;
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}
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/**
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* You will get null before onCreate and after onDestroy mostly
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*
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* @return Null or nonull
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*/
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public @Nullable ViewGroup getSceneView() {
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return mSceneView;
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}
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public void startScene(@NonNull Class sceneClass) {
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sSceneManager.startScene(sceneClass, null, null);
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}
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public void startScene(@NonNull Class sceneClass, @Nullable Announcer announcer) {
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sSceneManager.startScene(sceneClass, announcer, null);
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}
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public void startScene(@NonNull Class sceneClass, @Nullable Announcer announcer,
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@Nullable Curtain curtain) {
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sSceneManager.startScene(sceneClass, announcer, curtain);
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}
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int getState() {
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return mState;
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}
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void setState(int state) {
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mState = state;
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}
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public final void finish() {
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sSceneManager.finishScene(this);
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}
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void create(@Nullable Bundle savedInstanceState) {
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onCreate(savedInstanceState);
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if (mSceneView == null) {
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//noinspection deprecation
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mSceneView = new AbsoluteLayout(getStageActivity());
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initBackground(mSceneView);
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}
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// Make sure scene view is attach from stage
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attachToStage();
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// Hide it if it is hidden
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if (savedInstanceState != null && savedInstanceState.getBoolean(getIsGoneKey(), false)) {
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mSceneView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
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@Override
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public void onGlobalLayout() {
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ViewUtils.removeOnGlobalLayoutListener(mSceneView.getViewTreeObserver(), this);
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ViewUtils.setVisibility(mSceneView, View.GONE);
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}
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});
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}
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}
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void destroy() {
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onDestroy();
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}
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void open() {
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onOpen();
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}
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void close() {
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onClose();
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}
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void pause() {
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onPause();
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}
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void resume() {
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onResume();
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}
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void out() {
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onOut();
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}
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void getFitPaddingBottom(int b) {
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if (mFitPaddingBottom != b) {
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mFitPaddingBottom = b;
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onGetFitPaddingBottom(b);
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}
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}
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/**
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* return true if it is close or about to close
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*/
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public boolean isFinishing() {
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return mState == SCENE_STATE_CLOSE || mState == SCENE_STATE_DESTROY;
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}
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public void setBackgroundColor(int bgColor) {
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if (mBackgroundColor != bgColor) {
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mBackgroundColor = bgColor;
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View sceneView = getSceneView();
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if (sceneView != null) {
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sceneView.setBackgroundColor(bgColor);
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}
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}
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}
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public int getBackgroundColor() {
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return mBackgroundColor;
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}
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protected void setContentView(int resId) {
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StageActivity sa = getStageActivity();
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//noinspection deprecation
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mSceneView = new AbsoluteLayout(sa);
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initBackground(mSceneView);
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mSceneView.setBackgroundColor(mBackgroundColor);
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sa.getLayoutInflater().inflate(resId, mSceneView);
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}
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protected void setContentView(View view) {
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StageActivity sa = getStageActivity();
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//noinspection deprecation
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mSceneView = new AbsoluteLayout(sa);
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initBackground(mSceneView);
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mSceneView.addView(view, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
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}
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private void initBackground(@NonNull View bg) {
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bg.setBackgroundColor(mBackgroundColor);
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bg.setClickable(true);
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}
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protected void onCreate(@Nullable Bundle savedInstanceState) {
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}
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protected void onDestroy() {
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}
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protected void onOpen() {
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}
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protected void onClose() {
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}
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protected void onPause() {
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}
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protected void onResume() {
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}
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protected void onOut() {
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}
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/**
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* It will be called if nav bar is transparent.
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* @param b the nav bar's height
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*/
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protected void onGetFitPaddingBottom(int b) {
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}
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/**
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* Finds a view that was identified by the id attribute from the XML that
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* was processed in {@link #onCreate}.
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*
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* @param resId the Id
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* @return The view if found or null otherwise.
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*/
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public View findViewById(int resId) {
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View sceneView = getSceneView();
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if (sceneView != null) {
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return sceneView.findViewById(resId);
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} else {
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return null;
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}
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}
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/**
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* Is scene view attached to stage
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*
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* @return if scene view is null, always return false;
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*/
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public boolean isInStage() {
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if (mSceneView == null) {
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return false;
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} else {
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ViewParent parent = mSceneView.getParent();
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if (parent == null) {
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return false;
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} else if (parent == getStageActivity().getStageLayout()) {
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return true;
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} else {
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throw new IllegalStateException("Scene view should only be the child of stage layout");
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}
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}
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}
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// Add scene view to stage layout
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void attachToStage() {
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if (mSceneView != null && !isInStage()) {
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doAttachToStage();
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}
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}
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// Remove scene view from stage layout
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void detachFromeStage() {
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if (mSceneView != null && isInStage()) {
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doDetachFromeStage();
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}
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}
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void doAttachToStage() {
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getStageActivity().attachSceneToStage(this);
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}
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void doDetachFromeStage() {
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getStageActivity().detachSceneFromStage(this);
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}
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public void onBackPressed() {
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if (!endCurtainAnimation() && !sSceneManager.endLegacyScene()) {
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sSceneManager.finishScene(this);
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}
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}
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/**
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* End curtainAnimation if it is running
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*
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* @return True if curtain animation is running
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*/
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boolean endCurtainAnimation() {
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if (mCurtain != null && mCurtain.isInAnimation()) {
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mCurtain.endAnimation();
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return true;
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}
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return false;
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}
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void openFinished() {
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open();
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setState(Scene.SCENE_STATE_RUN);
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}
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void closeFinished() {
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sSceneManager.removeLegacyScene(this);
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close();
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setState(Scene.SCENE_STATE_DESTROY);
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detachFromeStage();
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}
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// It is constant
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private String getStateKey() {
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return "scene:" + Integer.toHexString(hashCode());
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}
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private String getIsGoneKey() {
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return getStateKey() + ":gone";
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}
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void saveInstanceState(Bundle outState) {
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SparseArray<Parcelable> states = new SparseArray<>();
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onSaveInstanceState(states);
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outState.putSparseParcelableArray(getStateKey(), states);
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if (mSceneView != null) {
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outState.putBoolean(getIsGoneKey(), mSceneView.getVisibility() == View.GONE);
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}
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}
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void restoreInstanceState(@NonNull Bundle savedInstanceState) {
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if (mSceneView != null) {
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SparseArray<Parcelable> savedStates
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= savedInstanceState.getSparseParcelableArray(getStateKey());
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if (savedStates != null) {
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onRestoreInstanceState(savedStates);
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}
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}
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}
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protected void onSaveInstanceState(@NonNull SparseArray<Parcelable> outState) {
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if (mSceneView != null) {
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mSceneView.saveHierarchyState(outState);
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}
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}
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protected void onRestoreInstanceState(@NonNull SparseArray<Parcelable> savedStates) {
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if (mSceneView != null) {
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mSceneView.restoreHierarchyState(savedStates);
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}
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}
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public void startActivityForResult(Intent intent, ActivityResultListener listener) {
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getStageActivity().startActivityForResult(intent, listener);
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}
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public interface ActivityResultListener {
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void onGetResult(int resultCode, Intent data);
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}
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}
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