Separate getTaskViewAt usage
getTaskViewAt is used in two different contexts with different
assumptions:
1. In the context of iterating over the all TaskViews, where
the valid tasks indices are know.
2. In the context of requesting some TaskView by index, where
the caller expects null when the input index is invalid.
The nullability status of the method differs in these contexts
and therefore getTaskViewAt usage can be separated into two
different methods.
Bug: 205828770
Test: m LauncherGoResLib
Change-Id: I42c04c115c309f1849f9dfbb05c74b9b080acf13
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index ddd2a82..aba0944 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -107,6 +107,7 @@
import android.widget.OverScroller;
import android.widget.Toast;
+import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.UiThread;
import androidx.core.graphics.ColorUtils;
@@ -181,6 +182,7 @@
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
+import java.util.Objects;
import java.util.function.Consumer;
/**
@@ -822,7 +824,7 @@
@Override
public void onTaskIconChanged(String pkg, UserHandle user) {
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView tv = getTaskViewAt(i);
+ TaskView tv = requireTaskViewAt(i);
Task task = tv.getTask();
if (task != null && task.key != null && pkg.equals(task.key.getPackageName())
&& task.key.userId == user.getIdentifier()) {
@@ -1104,7 +1106,7 @@
}
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
int[] taskIds = taskView.getTaskIds();
if (taskIds[0] == taskId || taskIds[1] == taskId) {
return taskView;
@@ -1181,7 +1183,7 @@
if (showAsGrid()) {
int taskCount = getTaskViewCount();
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
if (isTaskViewVisible(taskView) && taskView.offerTouchToChildren(ev)) {
// Keep consuming events to pass to delegate
return true;
@@ -1418,7 +1420,7 @@
if (runningTaskId != -1) {
targetPage = indexOfChild(newRunningTaskView);
} else if (getTaskViewCount() > 0) {
- targetPage = indexOfChild(getTaskViewAt(0));
+ targetPage = indexOfChild(requireTaskViewAt(0));
}
} else if (currentTaskId != -1) {
currentTaskView = getTaskViewByTaskId(currentTaskId);
@@ -1452,7 +1454,7 @@
private void removeTasksViewsAndClearAllButton() {
for (int i = getTaskViewCount() - 1; i >= 0; i--) {
- removeView(getTaskViewAt(i));
+ removeView(requireTaskViewAt(i));
}
if (indexOfChild(mClearAllButton) != -1) {
removeView(mClearAllButton);
@@ -1498,7 +1500,7 @@
public void resetTaskVisuals() {
for (int i = getTaskViewCount() - 1; i >= 0; i--) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
if (mIgnoreResetTaskId != taskView.getTaskIds()[0]) {
taskView.resetViewTransforms();
taskView.setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
@@ -1529,7 +1531,7 @@
mFullscreenProgress = fullscreenProgress;
int taskCount = getTaskViewCount();
for (int i = 0; i < taskCount; i++) {
- getTaskViewAt(i).setFullscreenProgress(mFullscreenProgress);
+ requireTaskViewAt(i).setFullscreenProgress(mFullscreenProgress);
}
mClearAllButton.setFullscreenProgress(fullscreenProgress);
@@ -1656,7 +1658,7 @@
float accumulatedTranslationX = 0;
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
taskView.updateTaskSize();
taskView.getPrimaryNonGridTranslationProperty().set(taskView, accumulatedTranslationX);
taskView.getSecondaryNonGridTranslationProperty().set(taskView, 0f);
@@ -1802,7 +1804,7 @@
// Update the task data for the in/visible children
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
Task task = taskView.getTask();
int index = indexOfChild(taskView);
boolean visible;
@@ -1945,7 +1947,7 @@
}
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
if (taskView.getTaskViewId() == taskViewId) {
return taskView;
}
@@ -2043,7 +2045,7 @@
int runningIndex = getCurrentPage();
AnimatorSet as = new AnimatorSet();
for (int i = 0; i < getTaskViewCount(); i++) {
- View taskView = getTaskViewAt(i);
+ View taskView = requireTaskViewAt(i);
if (runningIndex == i && taskView.getAlpha() != 0) {
continue;
}
@@ -2054,7 +2056,7 @@
private void updateChildTaskOrientations() {
for (int i = 0; i < getTaskViewCount(); i++) {
- getTaskViewAt(i).setOrientationState(mOrientationState);
+ requireTaskViewAt(i).setOrientationState(mOrientationState);
}
TaskMenuView tv = (TaskMenuView) getTopOpenViewWithType(mActivity, TYPE_TASK_MENU);
if (tv != null) {
@@ -2259,7 +2261,7 @@
mTaskIconScaledDown = isScaledDown;
int taskCount = getTaskViewCount();
for (int i = 0; i < taskCount; i++) {
- getTaskViewAt(i).setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
+ requireTaskViewAt(i).setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
}
}
}
@@ -2275,7 +2277,7 @@
mTaskIconScaledDown = false;
int taskCount = getTaskViewCount();
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
taskView.setIconScaleAnimStartProgress(0f);
taskView.animateIconScaleAndDimIntoView();
}
@@ -2347,7 +2349,7 @@
mTopRowIdSet.clear();
}
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
int taskWidthAndSpacing = taskView.getLayoutParams().width + mPageSpacing;
// Evenly distribute tasks between rows unless rearranging due to task dismissal, in
// which case keep tasks in their respective rows. For the running task, don't join
@@ -2412,7 +2414,7 @@
if (j == focusedTaskIndex) {
continue;
}
- widthOffset += getTaskViewAt(j).getLayoutParams().width + mPageSpacing;
+ widthOffset += requireTaskViewAt(j).getLayoutParams().width + mPageSpacing;
}
float currentTaskTranslationX = mIsRtl ? widthOffset : -widthOffset;
@@ -2431,7 +2433,7 @@
if (j == focusedTaskIndex) {
continue;
}
- widthOffset += getTaskViewAt(j).getLayoutParams().width + mPageSpacing;
+ widthOffset += requireTaskViewAt(j).getLayoutParams().width + mPageSpacing;
}
float currentTaskTranslationX = mIsRtl ? widthOffset : -widthOffset;
@@ -2509,7 +2511,7 @@
}
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
taskView.setGridTranslationX(gridTranslations[i] - snappedTaskGridTranslationX
+ snappedTaskNonGridScrollAdjustment);
}
@@ -2550,7 +2552,7 @@
mGridProgress = gridProgress;
for (int i = 0; i < taskCount; i++) {
- getTaskViewAt(i).setGridProgress(gridProgress);
+ requireTaskViewAt(i).setGridProgress(gridProgress);
}
mClearAllButton.setGridProgress(gridProgress);
}
@@ -2715,7 +2717,7 @@
mTopRowIdSet.size() > 0 && mTopRowIdSet.size() >= (taskCount - 1) / 2f;
// Pick the next focused task from the preferred row.
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
if (taskView == dismissedTaskView) {
continue;
}
@@ -2818,7 +2820,7 @@
+ (taskCount - 1) * halfAdditionalDismissTranslationOffset,
END_DISMISS_TRANSLATION_INTERPOLATION_OFFSET, 1);
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
anim.setFloat(taskView, TaskView.GRID_END_TRANSLATION_X, longGridRowWidthDiff,
clampToProgress(LINEAR, dismissTranslationInterpolationEnd, 1));
dismissTranslationInterpolationEnd = Utilities.boundToRange(
@@ -3138,7 +3140,7 @@
// Rebalance tasks in the grid
int highestVisibleTaskIndex = getHighestVisibleTaskIndex();
if (highestVisibleTaskIndex < Integer.MAX_VALUE) {
- TaskView taskView = getTaskViewAt(highestVisibleTaskIndex);
+ TaskView taskView = requireTaskViewAt(highestVisibleTaskIndex);
boolean shouldRebalance;
int screenStart = mOrientationHandler.getPrimaryScroll(
@@ -3235,7 +3237,7 @@
IntArray topArray = new IntArray(mTopRowIdSet.size());
int taskViewCount = getTaskViewCount();
for (int i = 0; i < taskViewCount; i++) {
- int taskViewId = getTaskViewAt(i).getTaskViewId();
+ int taskViewId = requireTaskViewAt(i).getTaskViewId();
if (mTopRowIdSet.contains(taskViewId)) {
topArray.add(taskViewId);
}
@@ -3254,7 +3256,7 @@
IntArray bottomArray = new IntArray(bottomRowIdArraySize);
int taskViewCount = getTaskViewCount();
for (int i = 0; i < taskViewCount; i++) {
- int taskViewId = getTaskViewAt(i).getTaskViewId();
+ int taskViewId = requireTaskViewAt(i).getTaskViewId();
if (!mTopRowIdSet.contains(taskViewId) && taskViewId != mFocusedTaskViewId) {
bottomArray.add(taskViewId);
}
@@ -3324,7 +3326,7 @@
int count = getTaskViewCount();
for (int i = 0; i < count; i++) {
- addDismissedTaskAnimations(getTaskViewAt(i), duration, anim);
+ addDismissedTaskAnimations(requireTaskViewAt(i), duration, anim);
}
mPendingAnimation = anim;
@@ -3447,7 +3449,7 @@
mContentAlpha = alpha;
int runningTaskId = getTaskIdsForRunningTaskView()[0];
for (int i = getTaskViewCount() - 1; i >= 0; i--) {
- TaskView child = getTaskViewAt(i);
+ TaskView child = requireTaskViewAt(i);
int[] childTaskIds = child.getTaskIds();
if (!mRunningTaskTileHidden ||
(childTaskIds[0] != runningTaskId && childTaskIds[1] != runningTaskId)) {
@@ -3548,6 +3550,14 @@
return child instanceof TaskView ? (TaskView) child : null;
}
+ /**
+ * A version of {@link #getTaskViewAt} when the caller is sure about the input index.
+ */
+ @NonNull
+ private TaskView requireTaskViewAt(int index) {
+ return Objects.requireNonNull(getTaskViewAt(index));
+ }
+
public void setOnEmptyMessageUpdatedListener(OnEmptyMessageUpdatedListener listener) {
mOnEmptyMessageUpdatedListener = listener;
}
@@ -3764,7 +3774,7 @@
protected void setTaskViewsResistanceTranslation(float translation) {
mTaskViewsSecondaryTranslation = translation;
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView task = getTaskViewAt(i);
+ TaskView task = requireTaskViewAt(i);
task.getTaskResistanceTranslationProperty().set(task, translation / getScaleY());
}
runActionOnRemoteHandles(
@@ -3774,14 +3784,14 @@
private void updateTaskViewsSnapshotRadius() {
for (int i = 0; i < getTaskViewCount(); i++) {
- getTaskViewAt(i).updateSnapshotRadius();
+ requireTaskViewAt(i).updateSnapshotRadius();
}
}
protected void setTaskViewsPrimarySplitTranslation(float translation) {
mTaskViewsPrimarySplitTranslation = translation;
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView task = getTaskViewAt(i);
+ TaskView task = requireTaskViewAt(i);
task.getPrimarySplitTranslationProperty().set(task, translation);
}
}
@@ -3789,7 +3799,7 @@
protected void setTaskViewsSecondarySplitTranslation(float translation) {
mTaskViewsSecondarySplitTranslation = translation;
for (int i = 0; i < getTaskViewCount(); i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
if (taskView == mSplitHiddenTaskView) {
continue;
}
@@ -3803,7 +3813,7 @@
public void applySplitPrimaryScrollOffset() {
if (isSplitPlaceholderFirstInGrid()) {
for (int i = 0; i < getTaskViewCount(); i++) {
- getTaskViewAt(i).setSplitScrollOffsetPrimary(mSplitPlaceholderSize);
+ requireTaskViewAt(i).setSplitScrollOffsetPrimary(mSplitPlaceholderSize);
}
} else if (isSplitPlaceholderLastInGrid()) {
mClearAllButton.setSplitSelectScrollOffsetPrimary(-mSplitPlaceholderSize);
@@ -3845,7 +3855,7 @@
*/
public void resetSplitPrimaryScrollOffset() {
for (int i = 0; i < getTaskViewCount(); i++) {
- getTaskViewAt(i).setSplitScrollOffsetPrimary(0);
+ requireTaskViewAt(i).setSplitScrollOffsetPrimary(0);
}
mClearAllButton.setSplitSelectScrollOffsetPrimary(0);
}
@@ -4072,8 +4082,8 @@
mTaskViewDeadZoneRect.setEmpty();
int count = getTaskViewCount();
if (count > 0) {
- final View taskView = getTaskViewAt(0);
- getTaskViewAt(count - 1).getHitRect(mTaskViewDeadZoneRect);
+ final View taskView = requireTaskViewAt(0);
+ requireTaskViewAt(count - 1).getHitRect(mTaskViewDeadZoneRect);
mTaskViewDeadZoneRect.union(taskView.getLeft(), taskView.getTop(), taskView.getRight(),
taskView.getBottom());
}
@@ -4555,7 +4565,7 @@
final int taskCount = getTaskViewCount();
for (int i = 0; i < taskCount; i++) {
- TaskView taskView = getTaskViewAt(i);
+ TaskView taskView = requireTaskViewAt(i);
float scrollDiff = taskView.getScrollAdjustment(showAsFullscreen, showAsGrid);
int pageScroll = newPageScrolls[i] + (int) scrollDiff;
if ((mIsRtl && pageScroll < clearAllScroll + clearAllWidth)
@@ -4714,7 +4724,7 @@
int overlayEnabledPage = mOverlayEnabled ? getNextPage() : -1;
int taskCount = getTaskViewCount();
for (int i = 0; i < taskCount; i++) {
- getTaskViewAt(i).setOverlayEnabled(i == overlayEnabledPage);
+ requireTaskViewAt(i).setOverlayEnabled(i == overlayEnabledPage);
}
}
@@ -4868,7 +4878,7 @@
mColorTint = tintAmount;
for (int i = 0; i < getTaskViewCount(); i++) {
- getTaskViewAt(i).setColorTint(mColorTint, mTintingColor);
+ requireTaskViewAt(i).setColorTint(mColorTint, mTintingColor);
}
Drawable scrimBg = mActivity.getScrimView().getBackground();