| /* |
| * Copyright (C) 2011 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 android.support.v4.app; |
| |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.support.v4.util.LogWriter; |
| import android.support.v4.view.ViewCompat; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.view.View; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.lang.reflect.Modifier; |
| import java.util.ArrayList; |
| |
| final class BackStackState implements Parcelable { |
| final int[] mOps; |
| final int mTransition; |
| final int mTransitionStyle; |
| final String mName; |
| final int mIndex; |
| final int mBreadCrumbTitleRes; |
| final CharSequence mBreadCrumbTitleText; |
| final int mBreadCrumbShortTitleRes; |
| final CharSequence mBreadCrumbShortTitleText; |
| final ArrayList<String> mSharedElementSourceNames; |
| final ArrayList<String> mSharedElementTargetNames; |
| final boolean mReorderingAllowed; |
| |
| public BackStackState(BackStackRecord bse) { |
| final int numOps = bse.mOps.size(); |
| mOps = new int[numOps * 6]; |
| |
| if (!bse.mAddToBackStack) { |
| throw new IllegalStateException("Not on back stack"); |
| } |
| |
| int pos = 0; |
| for (int opNum = 0; opNum < numOps; opNum++) { |
| final BackStackRecord.Op op = bse.mOps.get(opNum); |
| mOps[pos++] = op.cmd; |
| mOps[pos++] = op.fragment != null ? op.fragment.mIndex : -1; |
| mOps[pos++] = op.enterAnim; |
| mOps[pos++] = op.exitAnim; |
| mOps[pos++] = op.popEnterAnim; |
| mOps[pos++] = op.popExitAnim; |
| } |
| mTransition = bse.mTransition; |
| mTransitionStyle = bse.mTransitionStyle; |
| mName = bse.mName; |
| mIndex = bse.mIndex; |
| mBreadCrumbTitleRes = bse.mBreadCrumbTitleRes; |
| mBreadCrumbTitleText = bse.mBreadCrumbTitleText; |
| mBreadCrumbShortTitleRes = bse.mBreadCrumbShortTitleRes; |
| mBreadCrumbShortTitleText = bse.mBreadCrumbShortTitleText; |
| mSharedElementSourceNames = bse.mSharedElementSourceNames; |
| mSharedElementTargetNames = bse.mSharedElementTargetNames; |
| mReorderingAllowed = bse.mReorderingAllowed; |
| } |
| |
| public BackStackState(Parcel in) { |
| mOps = in.createIntArray(); |
| mTransition = in.readInt(); |
| mTransitionStyle = in.readInt(); |
| mName = in.readString(); |
| mIndex = in.readInt(); |
| mBreadCrumbTitleRes = in.readInt(); |
| mBreadCrumbTitleText = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| mBreadCrumbShortTitleRes = in.readInt(); |
| mBreadCrumbShortTitleText = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| mSharedElementSourceNames = in.createStringArrayList(); |
| mSharedElementTargetNames = in.createStringArrayList(); |
| mReorderingAllowed = in.readInt() != 0; |
| } |
| |
| public BackStackRecord instantiate(FragmentManagerImpl fm) { |
| BackStackRecord bse = new BackStackRecord(fm); |
| int pos = 0; |
| int num = 0; |
| while (pos < mOps.length) { |
| BackStackRecord.Op op = new BackStackRecord.Op(); |
| op.cmd = mOps[pos++]; |
| if (FragmentManagerImpl.DEBUG) Log.v(FragmentManagerImpl.TAG, |
| "Instantiate " + bse + " op #" + num + " base fragment #" + mOps[pos]); |
| int findex = mOps[pos++]; |
| if (findex >= 0) { |
| Fragment f = fm.mActive.get(findex); |
| op.fragment = f; |
| } else { |
| op.fragment = null; |
| } |
| op.enterAnim = mOps[pos++]; |
| op.exitAnim = mOps[pos++]; |
| op.popEnterAnim = mOps[pos++]; |
| op.popExitAnim = mOps[pos++]; |
| bse.mEnterAnim = op.enterAnim; |
| bse.mExitAnim = op.exitAnim; |
| bse.mPopEnterAnim = op.popEnterAnim; |
| bse.mPopExitAnim = op.popExitAnim; |
| bse.addOp(op); |
| num++; |
| } |
| bse.mTransition = mTransition; |
| bse.mTransitionStyle = mTransitionStyle; |
| bse.mName = mName; |
| bse.mIndex = mIndex; |
| bse.mAddToBackStack = true; |
| bse.mBreadCrumbTitleRes = mBreadCrumbTitleRes; |
| bse.mBreadCrumbTitleText = mBreadCrumbTitleText; |
| bse.mBreadCrumbShortTitleRes = mBreadCrumbShortTitleRes; |
| bse.mBreadCrumbShortTitleText = mBreadCrumbShortTitleText; |
| bse.mSharedElementSourceNames = mSharedElementSourceNames; |
| bse.mSharedElementTargetNames = mSharedElementTargetNames; |
| bse.mReorderingAllowed = mReorderingAllowed; |
| bse.bumpBackStackNesting(1); |
| return bse; |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeIntArray(mOps); |
| dest.writeInt(mTransition); |
| dest.writeInt(mTransitionStyle); |
| dest.writeString(mName); |
| dest.writeInt(mIndex); |
| dest.writeInt(mBreadCrumbTitleRes); |
| TextUtils.writeToParcel(mBreadCrumbTitleText, dest, 0); |
| dest.writeInt(mBreadCrumbShortTitleRes); |
| TextUtils.writeToParcel(mBreadCrumbShortTitleText, dest, 0); |
| dest.writeStringList(mSharedElementSourceNames); |
| dest.writeStringList(mSharedElementTargetNames); |
| dest.writeInt(mReorderingAllowed ? 1 : 0); |
| } |
| |
| public static final Parcelable.Creator<BackStackState> CREATOR |
| = new Parcelable.Creator<BackStackState>() { |
| @Override |
| public BackStackState createFromParcel(Parcel in) { |
| return new BackStackState(in); |
| } |
| |
| @Override |
| public BackStackState[] newArray(int size) { |
| return new BackStackState[size]; |
| } |
| }; |
| } |
| |
| /** |
| * Entry of an operation on the fragment back stack. |
| */ |
| final class BackStackRecord extends FragmentTransaction implements |
| FragmentManager.BackStackEntry, FragmentManagerImpl.OpGenerator { |
| static final String TAG = FragmentManagerImpl.TAG; |
| |
| final FragmentManagerImpl mManager; |
| |
| static final int OP_NULL = 0; |
| static final int OP_ADD = 1; |
| static final int OP_REPLACE = 2; |
| static final int OP_REMOVE = 3; |
| static final int OP_HIDE = 4; |
| static final int OP_SHOW = 5; |
| static final int OP_DETACH = 6; |
| static final int OP_ATTACH = 7; |
| static final int OP_SET_PRIMARY_NAV = 8; |
| static final int OP_UNSET_PRIMARY_NAV = 9; |
| |
| static final class Op { |
| int cmd; |
| Fragment fragment; |
| int enterAnim; |
| int exitAnim; |
| int popEnterAnim; |
| int popExitAnim; |
| |
| Op() { |
| } |
| |
| Op(int cmd, Fragment fragment) { |
| this.cmd = cmd; |
| this.fragment = fragment; |
| } |
| } |
| |
| ArrayList<Op> mOps = new ArrayList<>(); |
| int mEnterAnim; |
| int mExitAnim; |
| int mPopEnterAnim; |
| int mPopExitAnim; |
| int mTransition; |
| int mTransitionStyle; |
| boolean mAddToBackStack; |
| boolean mAllowAddToBackStack = true; |
| String mName; |
| boolean mCommitted; |
| int mIndex = -1; |
| |
| int mBreadCrumbTitleRes; |
| CharSequence mBreadCrumbTitleText; |
| int mBreadCrumbShortTitleRes; |
| CharSequence mBreadCrumbShortTitleText; |
| |
| ArrayList<String> mSharedElementSourceNames; |
| ArrayList<String> mSharedElementTargetNames; |
| boolean mReorderingAllowed = false; |
| |
| ArrayList<Runnable> mCommitRunnables; |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(128); |
| sb.append("BackStackEntry{"); |
| sb.append(Integer.toHexString(System.identityHashCode(this))); |
| if (mIndex >= 0) { |
| sb.append(" #"); |
| sb.append(mIndex); |
| } |
| if (mName != null) { |
| sb.append(" "); |
| sb.append(mName); |
| } |
| sb.append("}"); |
| return sb.toString(); |
| } |
| |
| public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { |
| dump(prefix, writer, true); |
| } |
| |
| public void dump(String prefix, PrintWriter writer, boolean full) { |
| if (full) { |
| writer.print(prefix); writer.print("mName="); writer.print(mName); |
| writer.print(" mIndex="); writer.print(mIndex); |
| writer.print(" mCommitted="); writer.println(mCommitted); |
| if (mTransition != FragmentTransaction.TRANSIT_NONE) { |
| writer.print(prefix); writer.print("mTransition=#"); |
| writer.print(Integer.toHexString(mTransition)); |
| writer.print(" mTransitionStyle=#"); |
| writer.println(Integer.toHexString(mTransitionStyle)); |
| } |
| if (mEnterAnim != 0 || mExitAnim !=0) { |
| writer.print(prefix); writer.print("mEnterAnim=#"); |
| writer.print(Integer.toHexString(mEnterAnim)); |
| writer.print(" mExitAnim=#"); |
| writer.println(Integer.toHexString(mExitAnim)); |
| } |
| if (mPopEnterAnim != 0 || mPopExitAnim !=0) { |
| writer.print(prefix); writer.print("mPopEnterAnim=#"); |
| writer.print(Integer.toHexString(mPopEnterAnim)); |
| writer.print(" mPopExitAnim=#"); |
| writer.println(Integer.toHexString(mPopExitAnim)); |
| } |
| if (mBreadCrumbTitleRes != 0 || mBreadCrumbTitleText != null) { |
| writer.print(prefix); writer.print("mBreadCrumbTitleRes=#"); |
| writer.print(Integer.toHexString(mBreadCrumbTitleRes)); |
| writer.print(" mBreadCrumbTitleText="); |
| writer.println(mBreadCrumbTitleText); |
| } |
| if (mBreadCrumbShortTitleRes != 0 || mBreadCrumbShortTitleText != null) { |
| writer.print(prefix); writer.print("mBreadCrumbShortTitleRes=#"); |
| writer.print(Integer.toHexString(mBreadCrumbShortTitleRes)); |
| writer.print(" mBreadCrumbShortTitleText="); |
| writer.println(mBreadCrumbShortTitleText); |
| } |
| } |
| |
| if (!mOps.isEmpty()) { |
| writer.print(prefix); writer.println("Operations:"); |
| String innerPrefix = prefix + " "; |
| final int numOps = mOps.size(); |
| for (int opNum = 0; opNum < numOps; opNum++) { |
| final Op op = mOps.get(opNum); |
| String cmdStr; |
| switch (op.cmd) { |
| case OP_NULL: cmdStr="NULL"; break; |
| case OP_ADD: cmdStr="ADD"; break; |
| case OP_REPLACE: cmdStr="REPLACE"; break; |
| case OP_REMOVE: cmdStr="REMOVE"; break; |
| case OP_HIDE: cmdStr="HIDE"; break; |
| case OP_SHOW: cmdStr="SHOW"; break; |
| case OP_DETACH: cmdStr="DETACH"; break; |
| case OP_ATTACH: cmdStr="ATTACH"; break; |
| case OP_SET_PRIMARY_NAV: cmdStr="SET_PRIMARY_NAV"; break; |
| case OP_UNSET_PRIMARY_NAV: cmdStr="UNSET_PRIMARY_NAV";break; |
| default: cmdStr="cmd=" + op.cmd; break; |
| } |
| writer.print(prefix); writer.print(" Op #"); writer.print(opNum); |
| writer.print(": "); writer.print(cmdStr); |
| writer.print(" "); writer.println(op.fragment); |
| if (full) { |
| if (op.enterAnim != 0 || op.exitAnim != 0) { |
| writer.print(prefix); writer.print("enterAnim=#"); |
| writer.print(Integer.toHexString(op.enterAnim)); |
| writer.print(" exitAnim=#"); |
| writer.println(Integer.toHexString(op.exitAnim)); |
| } |
| if (op.popEnterAnim != 0 || op.popExitAnim != 0) { |
| writer.print(prefix); writer.print("popEnterAnim=#"); |
| writer.print(Integer.toHexString(op.popEnterAnim)); |
| writer.print(" popExitAnim=#"); |
| writer.println(Integer.toHexString(op.popExitAnim)); |
| } |
| } |
| } |
| } |
| } |
| |
| public BackStackRecord(FragmentManagerImpl manager) { |
| mManager = manager; |
| } |
| |
| @Override |
| public int getId() { |
| return mIndex; |
| } |
| |
| @Override |
| public int getBreadCrumbTitleRes() { |
| return mBreadCrumbTitleRes; |
| } |
| |
| @Override |
| public int getBreadCrumbShortTitleRes() { |
| return mBreadCrumbShortTitleRes; |
| } |
| |
| @Override |
| public CharSequence getBreadCrumbTitle() { |
| if (mBreadCrumbTitleRes != 0) { |
| return mManager.mHost.getContext().getText(mBreadCrumbTitleRes); |
| } |
| return mBreadCrumbTitleText; |
| } |
| |
| @Override |
| public CharSequence getBreadCrumbShortTitle() { |
| if (mBreadCrumbShortTitleRes != 0) { |
| return mManager.mHost.getContext().getText(mBreadCrumbShortTitleRes); |
| } |
| return mBreadCrumbShortTitleText; |
| } |
| |
| void addOp(Op op) { |
| mOps.add(op); |
| op.enterAnim = mEnterAnim; |
| op.exitAnim = mExitAnim; |
| op.popEnterAnim = mPopEnterAnim; |
| op.popExitAnim = mPopExitAnim; |
| } |
| |
| @Override |
| public FragmentTransaction add(Fragment fragment, String tag) { |
| doAddOp(0, fragment, tag, OP_ADD); |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction add(int containerViewId, Fragment fragment) { |
| doAddOp(containerViewId, fragment, null, OP_ADD); |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction add(int containerViewId, Fragment fragment, String tag) { |
| doAddOp(containerViewId, fragment, tag, OP_ADD); |
| return this; |
| } |
| |
| private void doAddOp(int containerViewId, Fragment fragment, String tag, int opcmd) { |
| final Class fragmentClass = fragment.getClass(); |
| final int modifiers = fragmentClass.getModifiers(); |
| if (fragmentClass.isAnonymousClass() || !Modifier.isPublic(modifiers) |
| || (fragmentClass.isMemberClass() && !Modifier.isStatic(modifiers))) { |
| throw new IllegalStateException("Fragment " + fragmentClass.getCanonicalName() |
| + " must be a public static class to be properly recreated from" |
| + " instance state."); |
| } |
| |
| fragment.mFragmentManager = mManager; |
| |
| if (tag != null) { |
| if (fragment.mTag != null && !tag.equals(fragment.mTag)) { |
| throw new IllegalStateException("Can't change tag of fragment " |
| + fragment + ": was " + fragment.mTag |
| + " now " + tag); |
| } |
| fragment.mTag = tag; |
| } |
| |
| if (containerViewId != 0) { |
| if (containerViewId == View.NO_ID) { |
| throw new IllegalArgumentException("Can't add fragment " |
| + fragment + " with tag " + tag + " to container view with no id"); |
| } |
| if (fragment.mFragmentId != 0 && fragment.mFragmentId != containerViewId) { |
| throw new IllegalStateException("Can't change container ID of fragment " |
| + fragment + ": was " + fragment.mFragmentId |
| + " now " + containerViewId); |
| } |
| fragment.mContainerId = fragment.mFragmentId = containerViewId; |
| } |
| |
| addOp(new Op(opcmd, fragment)); |
| } |
| |
| @Override |
| public FragmentTransaction replace(int containerViewId, Fragment fragment) { |
| return replace(containerViewId, fragment, null); |
| } |
| |
| @Override |
| public FragmentTransaction replace(int containerViewId, Fragment fragment, String tag) { |
| if (containerViewId == 0) { |
| throw new IllegalArgumentException("Must use non-zero containerViewId"); |
| } |
| |
| doAddOp(containerViewId, fragment, tag, OP_REPLACE); |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction remove(Fragment fragment) { |
| addOp(new Op(OP_REMOVE, fragment)); |
| |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction hide(Fragment fragment) { |
| addOp(new Op(OP_HIDE, fragment)); |
| |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction show(Fragment fragment) { |
| addOp(new Op(OP_SHOW, fragment)); |
| |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction detach(Fragment fragment) { |
| addOp(new Op(OP_DETACH, fragment)); |
| |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction attach(Fragment fragment) { |
| addOp(new Op(OP_ATTACH, fragment)); |
| |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setPrimaryNavigationFragment(Fragment fragment) { |
| addOp(new Op(OP_SET_PRIMARY_NAV, fragment)); |
| |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setCustomAnimations(int enter, int exit) { |
| return setCustomAnimations(enter, exit, 0, 0); |
| } |
| |
| @Override |
| public FragmentTransaction setCustomAnimations(int enter, int exit, |
| int popEnter, int popExit) { |
| mEnterAnim = enter; |
| mExitAnim = exit; |
| mPopEnterAnim = popEnter; |
| mPopExitAnim = popExit; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setTransition(int transition) { |
| mTransition = transition; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction addSharedElement(View sharedElement, String name) { |
| if (FragmentTransition.supportsTransition()) { |
| String transitionName = ViewCompat.getTransitionName(sharedElement); |
| if (transitionName == null) { |
| throw new IllegalArgumentException("Unique transitionNames are required for all" + |
| " sharedElements"); |
| } |
| if (mSharedElementSourceNames == null) { |
| mSharedElementSourceNames = new ArrayList<String>(); |
| mSharedElementTargetNames = new ArrayList<String>(); |
| } else if (mSharedElementTargetNames.contains(name)) { |
| throw new IllegalArgumentException("A shared element with the target name '" |
| + name + "' has already been added to the transaction."); |
| } else if (mSharedElementSourceNames.contains(transitionName)) { |
| throw new IllegalArgumentException("A shared element with the source name '" |
| + transitionName + " has already been added to the transaction."); |
| } |
| |
| mSharedElementSourceNames.add(transitionName); |
| mSharedElementTargetNames.add(name); |
| } |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setTransitionStyle(int styleRes) { |
| mTransitionStyle = styleRes; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction addToBackStack(String name) { |
| if (!mAllowAddToBackStack) { |
| throw new IllegalStateException( |
| "This FragmentTransaction is not allowed to be added to the back stack."); |
| } |
| mAddToBackStack = true; |
| mName = name; |
| return this; |
| } |
| |
| @Override |
| public boolean isAddToBackStackAllowed() { |
| return mAllowAddToBackStack; |
| } |
| |
| @Override |
| public FragmentTransaction disallowAddToBackStack() { |
| if (mAddToBackStack) { |
| throw new IllegalStateException( |
| "This transaction is already being added to the back stack"); |
| } |
| mAllowAddToBackStack = false; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setBreadCrumbTitle(int res) { |
| mBreadCrumbTitleRes = res; |
| mBreadCrumbTitleText = null; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setBreadCrumbTitle(CharSequence text) { |
| mBreadCrumbTitleRes = 0; |
| mBreadCrumbTitleText = text; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setBreadCrumbShortTitle(int res) { |
| mBreadCrumbShortTitleRes = res; |
| mBreadCrumbShortTitleText = null; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setBreadCrumbShortTitle(CharSequence text) { |
| mBreadCrumbShortTitleRes = 0; |
| mBreadCrumbShortTitleText = text; |
| return this; |
| } |
| |
| void bumpBackStackNesting(int amt) { |
| if (!mAddToBackStack) { |
| return; |
| } |
| if (FragmentManagerImpl.DEBUG) Log.v(TAG, "Bump nesting in " + this |
| + " by " + amt); |
| final int numOps = mOps.size(); |
| for (int opNum = 0; opNum < numOps; opNum++) { |
| final Op op = mOps.get(opNum); |
| if (op.fragment != null) { |
| op.fragment.mBackStackNesting += amt; |
| if (FragmentManagerImpl.DEBUG) Log.v(TAG, "Bump nesting of " |
| + op.fragment + " to " + op.fragment.mBackStackNesting); |
| } |
| } |
| } |
| |
| @Override |
| public FragmentTransaction runOnCommit(Runnable runnable) { |
| if (runnable == null) { |
| throw new IllegalArgumentException("runnable cannot be null"); |
| } |
| disallowAddToBackStack(); |
| if (mCommitRunnables == null) { |
| mCommitRunnables = new ArrayList<>(); |
| } |
| mCommitRunnables.add(runnable); |
| return this; |
| } |
| |
| public void runOnCommitRunnables() { |
| if (mCommitRunnables != null) { |
| for (int i = 0, N = mCommitRunnables.size(); i < N; i++) { |
| mCommitRunnables.get(i).run(); |
| } |
| mCommitRunnables = null; |
| } |
| } |
| |
| @Override |
| public int commit() { |
| return commitInternal(false); |
| } |
| |
| @Override |
| public int commitAllowingStateLoss() { |
| return commitInternal(true); |
| } |
| |
| @Override |
| public void commitNow() { |
| disallowAddToBackStack(); |
| mManager.execSingleAction(this, false); |
| } |
| |
| @Override |
| public void commitNowAllowingStateLoss() { |
| disallowAddToBackStack(); |
| mManager.execSingleAction(this, true); |
| } |
| |
| @Override |
| public FragmentTransaction setReorderingAllowed(boolean reorderingAllowed) { |
| mReorderingAllowed = reorderingAllowed; |
| return this; |
| } |
| |
| @Override |
| public FragmentTransaction setAllowOptimization(boolean allowOptimization) { |
| return setReorderingAllowed(allowOptimization); |
| } |
| |
| int commitInternal(boolean allowStateLoss) { |
| if (mCommitted) throw new IllegalStateException("commit already called"); |
| if (FragmentManagerImpl.DEBUG) { |
| Log.v(TAG, "Commit: " + this); |
| LogWriter logw = new LogWriter(TAG); |
| PrintWriter pw = new PrintWriter(logw); |
| dump(" ", null, pw, null); |
| pw.close(); |
| } |
| mCommitted = true; |
| if (mAddToBackStack) { |
| mIndex = mManager.allocBackStackIndex(this); |
| } else { |
| mIndex = -1; |
| } |
| mManager.enqueueAction(this, allowStateLoss); |
| return mIndex; |
| } |
| |
| /** |
| * Implementation of {@link FragmentManagerImpl.OpGenerator}. |
| * This operation is added to the list of pending actions during {@link #commit()}, and |
| * will be executed on the UI thread to run this FragmentTransaction. |
| * |
| * @param records Modified to add this BackStackRecord |
| * @param isRecordPop Modified to add a false (this isn't a pop) |
| * @return true always because the records and isRecordPop will always be changed |
| */ |
| @Override |
| public boolean generateOps(ArrayList<BackStackRecord> records, ArrayList<Boolean> isRecordPop) { |
| if (FragmentManagerImpl.DEBUG) { |
| Log.v(TAG, "Run: " + this); |
| } |
| |
| records.add(this); |
| isRecordPop.add(false); |
| if (mAddToBackStack) { |
| mManager.addBackStackState(this); |
| } |
| return true; |
| } |
| |
| boolean interactsWith(int containerId) { |
| final int numOps = mOps.size(); |
| for (int opNum = 0; opNum < numOps; opNum++) { |
| final Op op = mOps.get(opNum); |
| final int fragContainer = op.fragment != null ? op.fragment.mContainerId : 0; |
| if (fragContainer != 0 && fragContainer == containerId) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| boolean interactsWith(ArrayList<BackStackRecord> records, int startIndex, int endIndex) { |
| if (endIndex == startIndex) { |
| return false; |
| } |
| final int numOps = mOps.size(); |
| int lastContainer = -1; |
| for (int opNum = 0; opNum < numOps; opNum++) { |
| final Op op = mOps.get(opNum); |
| final int container = op.fragment != null ? op.fragment.mContainerId : 0; |
| if (container != 0 && container != lastContainer) { |
| lastContainer = container; |
| for (int i = startIndex; i < endIndex; i++) { |
| BackStackRecord record = records.get(i); |
| final int numThoseOps = record.mOps.size(); |
| for (int thoseOpIndex = 0; thoseOpIndex < numThoseOps; thoseOpIndex++) { |
| final Op thatOp = record.mOps.get(thoseOpIndex); |
| final int thatContainer = thatOp.fragment != null |
| ? thatOp.fragment.mContainerId : 0; |
| if (thatContainer == container) { |
| return true; |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Executes the operations contained within this transaction. The Fragment states will only |
| * be modified if optimizations are not allowed. |
| */ |
| void executeOps() { |
| final int numOps = mOps.size(); |
| for (int opNum = 0; opNum < numOps; opNum++) { |
| final Op op = mOps.get(opNum); |
| final Fragment f = op.fragment; |
| if (f != null) { |
| f.setNextTransition(mTransition, mTransitionStyle); |
| } |
| switch (op.cmd) { |
| case OP_ADD: |
| f.setNextAnim(op.enterAnim); |
| mManager.addFragment(f, false); |
| break; |
| case OP_REMOVE: |
| f.setNextAnim(op.exitAnim); |
| mManager.removeFragment(f); |
| break; |
| case OP_HIDE: |
| f.setNextAnim(op.exitAnim); |
| mManager.hideFragment(f); |
| break; |
| case OP_SHOW: |
| f.setNextAnim(op.enterAnim); |
| mManager.showFragment(f); |
| break; |
| case OP_DETACH: |
| f.setNextAnim(op.exitAnim); |
| mManager.detachFragment(f); |
| break; |
| case OP_ATTACH: |
| f.setNextAnim(op.enterAnim); |
| mManager.attachFragment(f); |
| break; |
| case OP_SET_PRIMARY_NAV: |
| mManager.setPrimaryNavigationFragment(f); |
| break; |
| case OP_UNSET_PRIMARY_NAV: |
| mManager.setPrimaryNavigationFragment(null); |
| break; |
| default: |
| throw new IllegalArgumentException("Unknown cmd: " + op.cmd); |
| } |
| if (!mReorderingAllowed && op.cmd != OP_ADD && f != null) { |
| mManager.moveFragmentToExpectedState(f); |
| } |
| } |
| if (!mReorderingAllowed) { |
| // Added fragments are added at the end to comply with prior behavior. |
| mManager.moveToState(mManager.mCurState, true); |
| } |
| } |
| |
| /** |
| * Reverses the execution of the operations within this transaction. The Fragment states will |
| * only be modified if reordering is not allowed. |
| * |
| * @param moveToState {@code true} if added fragments should be moved to their final state |
| * in ordered transactions |
| */ |
| void executePopOps(boolean moveToState) { |
| for (int opNum = mOps.size() - 1; opNum >= 0; opNum--) { |
| final Op op = mOps.get(opNum); |
| Fragment f = op.fragment; |
| if (f != null) { |
| f.setNextTransition(FragmentManagerImpl.reverseTransit(mTransition), |
| mTransitionStyle); |
| } |
| switch (op.cmd) { |
| case OP_ADD: |
| f.setNextAnim(op.popExitAnim); |
| mManager.removeFragment(f); |
| break; |
| case OP_REMOVE: |
| f.setNextAnim(op.popEnterAnim); |
| mManager.addFragment(f, false); |
| break; |
| case OP_HIDE: |
| f.setNextAnim(op.popEnterAnim); |
| mManager.showFragment(f); |
| break; |
| case OP_SHOW: |
| f.setNextAnim(op.popExitAnim); |
| mManager.hideFragment(f); |
| break; |
| case OP_DETACH: |
| f.setNextAnim(op.popEnterAnim); |
| mManager.attachFragment(f); |
| break; |
| case OP_ATTACH: |
| f.setNextAnim(op.popExitAnim); |
| mManager.detachFragment(f); |
| break; |
| case OP_SET_PRIMARY_NAV: |
| mManager.setPrimaryNavigationFragment(null); |
| break; |
| case OP_UNSET_PRIMARY_NAV: |
| mManager.setPrimaryNavigationFragment(f); |
| break; |
| default: |
| throw new IllegalArgumentException("Unknown cmd: " + op.cmd); |
| } |
| if (!mReorderingAllowed && op.cmd != OP_REMOVE && f != null) { |
| mManager.moveFragmentToExpectedState(f); |
| } |
| } |
| if (!mReorderingAllowed && moveToState) { |
| mManager.moveToState(mManager.mCurState, true); |
| } |
| } |
| |
| /** |
| * Expands all meta-ops into their more primitive equivalents. This must be called prior to |
| * {@link #executeOps()} or any other call that operations on mOps for forward navigation. |
| * It should not be called for pop/reverse navigation operations. |
| * |
| * <p>Removes all OP_REPLACE ops and replaces them with the proper add and remove |
| * operations that are equivalent to the replace.</p> |
| * |
| * <p>Adds OP_UNSET_PRIMARY_NAV ops to match OP_SET_PRIMARY_NAV, OP_REMOVE and OP_DETACH |
| * ops so that we can restore the old primary nav fragment later. Since callers call this |
| * method in a loop before running ops from several transactions at once, the caller should |
| * pass the return value from this method as the oldPrimaryNav parameter for the next call. |
| * The first call in such a loop should pass the value of |
| * {@link FragmentManager#getPrimaryNavigationFragment()}.</p> |
| * |
| * @param added Initialized to the fragments that are in the mManager.mAdded, this |
| * will be modified to contain the fragments that will be in mAdded |
| * after the execution ({@link #executeOps()}. |
| * @param oldPrimaryNav The tracked primary navigation fragment as of the beginning of |
| * this set of ops |
| * @return the new oldPrimaryNav fragment after this record's ops would be run |
| */ |
| @SuppressWarnings("ReferenceEquality") |
| Fragment expandOps(ArrayList<Fragment> added, Fragment oldPrimaryNav) { |
| for (int opNum = 0; opNum < mOps.size(); opNum++) { |
| final Op op = mOps.get(opNum); |
| switch (op.cmd) { |
| case OP_ADD: |
| case OP_ATTACH: |
| added.add(op.fragment); |
| break; |
| case OP_REMOVE: |
| case OP_DETACH: { |
| added.remove(op.fragment); |
| if (op.fragment == oldPrimaryNav) { |
| mOps.add(opNum, new Op(OP_UNSET_PRIMARY_NAV, op.fragment)); |
| opNum++; |
| oldPrimaryNav = null; |
| } |
| } |
| break; |
| case OP_REPLACE: { |
| final Fragment f = op.fragment; |
| final int containerId = f.mContainerId; |
| boolean alreadyAdded = false; |
| for (int i = added.size() - 1; i >= 0; i--) { |
| final Fragment old = added.get(i); |
| if (old.mContainerId == containerId) { |
| if (old == f) { |
| alreadyAdded = true; |
| } else { |
| // This is duplicated from above since we only make |
| // a single pass for expanding ops. Unset any outgoing primary nav. |
| if (old == oldPrimaryNav) { |
| mOps.add(opNum, new Op(OP_UNSET_PRIMARY_NAV, old)); |
| opNum++; |
| oldPrimaryNav = null; |
| } |
| final Op removeOp = new Op(OP_REMOVE, old); |
| removeOp.enterAnim = op.enterAnim; |
| removeOp.popEnterAnim = op.popEnterAnim; |
| removeOp.exitAnim = op.exitAnim; |
| removeOp.popExitAnim = op.popExitAnim; |
| mOps.add(opNum, removeOp); |
| added.remove(old); |
| opNum++; |
| } |
| } |
| } |
| if (alreadyAdded) { |
| mOps.remove(opNum); |
| opNum--; |
| } else { |
| op.cmd = OP_ADD; |
| added.add(f); |
| } |
| } |
| break; |
| case OP_SET_PRIMARY_NAV: { |
| // It's ok if this is null, that means we will restore to no active |
| // primary navigation fragment on a pop. |
| mOps.add(opNum, new Op(OP_UNSET_PRIMARY_NAV, oldPrimaryNav)); |
| opNum++; |
| // Will be set by the OP_SET_PRIMARY_NAV we inserted before when run |
| oldPrimaryNav = op.fragment; |
| } |
| break; |
| } |
| } |
| return oldPrimaryNav; |
| } |
| |
| /** |
| * Removes fragments that are added or removed during a pop operation. |
| * |
| * @param added Initialized to the fragments that are in the mManager.mAdded, this |
| * will be modified to contain the fragments that will be in mAdded |
| * after the execution ({@link #executeOps()}. |
| * @param oldPrimaryNav The tracked primary navigation fragment as of the beginning of |
| * this set of ops |
| * @return the new oldPrimaryNav fragment after this record's ops would be popped |
| */ |
| Fragment trackAddedFragmentsInPop(ArrayList<Fragment> added, Fragment oldPrimaryNav) { |
| for (int opNum = 0; opNum < mOps.size(); opNum++) { |
| final Op op = mOps.get(opNum); |
| switch (op.cmd) { |
| case OP_ADD: |
| case OP_ATTACH: |
| added.remove(op.fragment); |
| break; |
| case OP_REMOVE: |
| case OP_DETACH: |
| added.add(op.fragment); |
| break; |
| case OP_UNSET_PRIMARY_NAV: |
| oldPrimaryNav = op.fragment; |
| break; |
| case OP_SET_PRIMARY_NAV: |
| oldPrimaryNav = null; |
| break; |
| } |
| } |
| return oldPrimaryNav; |
| } |
| |
| boolean isPostponed() { |
| for (int opNum = 0; opNum < mOps.size(); opNum++) { |
| final Op op = mOps.get(opNum); |
| if (isFragmentPostponed(op)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void setOnStartPostponedListener(Fragment.OnStartEnterTransitionListener listener) { |
| for (int opNum = 0; opNum < mOps.size(); opNum++) { |
| final Op op = mOps.get(opNum); |
| if (isFragmentPostponed(op)) { |
| op.fragment.setOnStartEnterTransitionListener(listener); |
| } |
| } |
| } |
| |
| private static boolean isFragmentPostponed(Op op) { |
| final Fragment fragment = op.fragment; |
| return fragment != null && fragment.mAdded && fragment.mView != null && !fragment.mDetached |
| && !fragment.mHidden && fragment.isPostponed(); |
| } |
| |
| @Override |
| public String getName() { |
| return mName; |
| } |
| |
| public int getTransition() { |
| return mTransition; |
| } |
| |
| public int getTransitionStyle() { |
| return mTransitionStyle; |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return mOps.isEmpty(); |
| } |
| } |