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Improve scene lifecycle

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seven332 committed 2015-07-02 16:57:52 +08:00
1 parent 3f6d3ea21c
commit f71883a2b9
15 files changed
+307 -210
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app/src/main/java/com/hippo/scene/SceneManager.java
+111 -51
View File
@@ -17,14 +17,18 @@
package com.hippo.scene;
import android.os.Bundle;
import android.os.Looper;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import com.hippo.util.AssertUtils;
import com.hippo.util.IntIdGenerator;
import com.hippo.util.Log;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.Stack;
public class SceneManager {
@@ -34,7 +38,9 @@ public class SceneManager {
private Stack<Scene> mSceneStack = new Stack<>();
private StageActivity mStageActivity;
private Scene mLegacyScene;
private boolean mLegacySceneSetLock;
private Set<Scene> mLegacySceneSet = new HashSet<>();
private Set<Scene> mPrepareToDieSceneSet = new HashSet<>();
private IntIdGenerator mIdGenerator = IntIdGenerator.create();
@@ -107,6 +113,19 @@ public class SceneManager {
}
}
private void checkLoop() {
if (Looper.myLooper() != Looper.getMainLooper()) {
throw new IllegalStateException("It is not main loop!");
}
}
private void checkPrepareToDie(Scene scene) {
if (mPrepareToDieSceneSet.contains(scene)) {
mPrepareToDieSceneSet.remove(scene);
finishScene(scene);
}
}
Scene createSceneByClass(@NonNull Class sceneClass) {
try {
return (Scene) sceneClass.newInstance();
@@ -123,12 +142,14 @@ public class SceneManager {
// TODO check previousState state
void startScene(@NonNull Class sceneClass, @Nullable Announcer announcer,
@Nullable Curtain curtain) {
checkLoop();
if (!isStageAlive()) {
Log.w(TAG, "Stage is not alive, but attemp to create " + sceneClass.getSimpleName());
return;
throw new IllegalStateException("Stage is not alive, but attemp to create " + sceneClass.getSimpleName());
}
Scene topScene = getTopState();
// check LAUNCH_MODE_SINGLE_TOP
Scene topScene = getTopScene();
if (sceneClass.isInstance(topScene) &&
topScene.getLaunchMode() == Scene.LAUNCH_MODE_SINGLE_TOP) {
topScene.onNewAnnouncer(announcer);
@@ -143,6 +164,8 @@ public class SceneManager {
}
void showDialog(@NonNull SceneDialog dialog, @Nullable Curtain curtain) {
checkLoop();
if (!isStageAlive()) {
Log.w(TAG, "Stage is not alive, but attemp to show dialog " + dialog.toString());
return;
@@ -154,7 +177,7 @@ public class SceneManager {
}
private void startScene(Scene scene, Curtain curtain) {
Scene previousState = getTopState();
Scene previousState = getTopScene();
mSceneStack.push(scene);
if (curtain != null) {
@@ -164,12 +187,12 @@ public class SceneManager {
if (previousState != null) {
previousState.pause();
previousState.setState(Scene.SCENE_STATE_PAUSE);
notifyPause(previousState.getClass());
}
scene.create(null);
scene.setState(Scene.SCENE_STATE_CREATE);
notifyCreate(scene.getClass());
scene.init();
scene.setState(Scene.SCENE_STATE_PREPARE);
scene.create(false);
scene.bind();
// Update fit padding
int fitPaddingBottom = getStageActivity().getFitPaddingBottom();
@@ -183,65 +206,80 @@ public class SceneManager {
// Set state run by curtain
} else {
scene.setState(Scene.SCENE_STATE_RUN);
checkPrepareToDie(scene);
}
}
/**
* End legacy scene close animation at once
* End all legacy scene animation at once
*
* @return True if legacy scene exist and its curtain animation is running
*/
boolean endLegacyScene() {
if (mLegacyScene != null) {
boolean result = mLegacyScene.endCurtainAnimation();
mLegacyScene = null;
return result;
if (!mLegacySceneSet.isEmpty()) {
mLegacySceneSetLock = true;
for (Scene scene : mLegacySceneSet) {
scene.endCurtainAnimation();
}
mLegacySceneSetLock = false;
mLegacySceneSet.clear();
return true;
} else {
return false;
}
return false;
}
void finishScene(@NonNull Scene scene) {
checkLoop();
int index = getSceneIndex(scene);
if (index >= 0 && index < mSceneStack.size()) {
if (scene.canNotBeSaved()) {
// the scene is hopeless
scene.endCurtainAnimation();
return;
}
endLegacyScene();
if (!scene.isRunning()) {
// the scene prepare to die
mPrepareToDieSceneSet.add(scene);
scene.endCurtainAnimation();
return;
}
// Scene state might be SCENE_STATE_RUN, SCENE_STATE_OPEN, SCENE_STATE_PAUSE
if (index == 0) {
// TODO If the cene is under a dialog, the previous may not show
if (index != mSceneStack.size() - 1 || index == 0) {
// It is the last scene, just finish the activity
mSceneStack.remove(index);
scene.destroy();
scene.destroy(true);
scene.setState(Scene.SCENE_STATE_DESTROY);
notifyDestroy(scene.getClass());
scene.die(index == 0);
scene.setState(Scene.SCENE_STATE_DIE);
getStageActivity().finish();
} else {
// TODO check scene state
mSceneStack.remove(index);
Scene previousState = getTopState();
// If Scene is CLOSE
if (previousState != null) {
previousState.resume();
previousState.setState(Scene.SCENE_STATE_RUN);
notifyResume(previousState.getClass());
if (index == 0) {
getStageActivity().finish();
}
} else {
mSceneStack.remove(index);
Scene previousScene = mSceneStack.get(index - 1);
scene.destroy();
scene.setState(Scene.SCENE_STATE_DESTROY);
notifyDestroy(scene.getClass());
previousScene.resume();
previousScene.setState(Scene.SCENE_STATE_RUN);
scene.destroy(true);
Curtain curtain = scene.getCurtain();
if (curtain != null && previousState != null && curtain.isPreviousScene(previousState)) {
if (curtain != null &&
(!curtain.specifyPreviousScene() || curtain.isPreviousScene(previousScene))) {
scene.setState(Scene.SCENE_STATE_CLOSE);
mLegacyScene = scene;
curtain.close(previousState, scene);
// detachFromeStage by curtain
curtain.close(previousScene, scene);
// add the scene to legacy set
mLegacySceneSet.add(scene);
// curtain will kill the scene
} else {
scene.detachFromeStage();
scene.setState(Scene.SCENE_STATE_DESTROY);
scene.die(false);
scene.setState(Scene.SCENE_STATE_DIE);
}
}
} else {
@@ -249,9 +287,28 @@ public class SceneManager {
}
}
void removeLegacyScene(Scene scene) {
if (mLegacyScene == scene) {
mLegacyScene = null;
private void checkSceneState(Scene scene, int expected) {
AssertUtils.assertEquals("The scene state is " + scene.getState() + ", but it should be " + expected,
expected, scene.getState());
}
void openScene(Scene scene) {
checkSceneState(scene, Scene.SCENE_STATE_OPEN);
scene.open();
scene.setState(Scene.SCENE_STATE_RUN);
checkPrepareToDie(scene);
}
void closeScene(Scene scene) {
checkSceneState(scene, Scene.SCENE_STATE_CLOSE);
scene.close();
scene.setState(Scene.SCENE_STATE_DESTROY);
scene.die(false);
scene.setState(Scene.SCENE_STATE_DIE);
// remove the scene from legacy set
if (!mLegacySceneSetLock) {
mLegacySceneSet.remove(scene);
}
}
@@ -266,7 +323,7 @@ public class SceneManager {
}
boolean onBackPressed() {
Scene scene = getTopState();
Scene scene = getTopScene();
if (scene != null) {
scene.onBackPressedInternal();
return true;
@@ -276,7 +333,7 @@ public class SceneManager {
}
}
private Scene getTopState() {
private Scene getTopScene() {
if (!mSceneStack.isEmpty()) {
return mSceneStack.peek();
} else {
@@ -296,10 +353,13 @@ public class SceneManager {
protected void onRestoreInstanceState(@NonNull Bundle savedInstanceState) {
for (Scene scene : mSceneStack) {
// Recreate
scene.rebirth(savedInstanceState);
notifyRebirth(scene.getClass());
scene.create(savedInstanceState);
scene.destroy(false);
scene.setState(Scene.SCENE_STATE_REBIRTH);
scene.rebirth();
scene.setState(Scene.SCENE_STATE_PREPARE);
scene.create(true);
scene.restore();
scene.setState(Scene.SCENE_STATE_RUN);
scene.restoreInstanceState(savedInstanceState);
}
}