Split OverviewState for IconRecents Go

Split common functionality in OverviewState so that it can be reused in
both implementations for IconRecents Go and non-Go.

Bug: 114136250
Test: Manual test NexusLauncher, Launcher3GoWithQuickstep
Test: Manual test IconRecentsGo (gets to recents screen w/o crashing)
Change-Id: Ibff5d3573b3b22dcdfda1b0662d4dd219d2e382f

1 files changed, 153 insertions, 0 deletions

diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/OverviewState.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/OverviewState.java
new file mode 100644
index 000000000..de6f7a759
--- /dev/null
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/OverviewState.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2017 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 com.android.launcher3.uioverrides;
+
+import static com.android.launcher3.AbstractFloatingView.TYPE_QUICKSTEP_PREVIEW;
+import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
+import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
+import static com.android.launcher3.states.RotationHelper.REQUEST_ROTATE;
+
+import android.graphics.Rect;
+import android.view.View;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.R;
+import com.android.launcher3.Workspace;
+import com.android.launcher3.allapps.DiscoveryBounce;
+import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
+import com.android.quickstep.RecentsModel;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
+
+/**
+ * Definition for overview state
+ */
+public class OverviewState extends LauncherState {
+
+    protected static final Rect sTempRect = new Rect();
+
+    private static final int STATE_FLAGS = FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED
+            | FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_UI | FLAG_DISABLE_ACCESSIBILITY;
+
+    public OverviewState(int id) {
+        this(id, OVERVIEW_TRANSITION_MS, STATE_FLAGS);
+    }
+
+    protected OverviewState(int id, int transitionDuration, int stateFlags) {
+        super(id, ContainerType.TASKSWITCHER, transitionDuration, stateFlags);
+    }
+
+    @Override
+    public float[] getWorkspaceScaleAndTranslation(Launcher launcher) {
+        RecentsView recentsView = launcher.getOverviewPanel();
+        Workspace workspace = launcher.getWorkspace();
+        View workspacePage = workspace.getPageAt(workspace.getCurrentPage());
+        float workspacePageWidth = workspacePage != null && workspacePage.getWidth() != 0
+                ? workspacePage.getWidth() : launcher.getDeviceProfile().availableWidthPx;
+        recentsView.getTaskSize(sTempRect);
+        float scale = (float) sTempRect.width() / workspacePageWidth;
+        float parallaxFactor = 0.5f;
+        return new float[]{scale, 0, -getDefaultSwipeHeight(launcher) * parallaxFactor};
+    }
+
+    @Override
+    public float[] getOverviewScaleAndTranslationYFactor(Launcher launcher) {
+        return new float[] {1f, 0f};
+    }
+
+    @Override
+    public void onStateEnabled(Launcher launcher) {
+        RecentsView rv = launcher.getOverviewPanel();
+        rv.setOverviewStateEnabled(true);
+        if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
+            AbstractFloatingView.closeAllOpenViews(launcher);
+        } else {
+            AbstractFloatingView.closeAllOpenViewsExcept(launcher, TYPE_QUICKSTEP_PREVIEW);
+        }
+    }
+
+    @Override
+    public void onStateDisabled(Launcher launcher) {
+        RecentsView rv = launcher.getOverviewPanel();
+        rv.setOverviewStateEnabled(false);
+        RecentsModel.INSTANCE.get(launcher).resetAssistCache();
+    }
+
+    @Override
+    public void onStateTransitionEnd(Launcher launcher) {
+        launcher.getRotationHelper().setCurrentStateRequest(REQUEST_ROTATE);
+        DiscoveryBounce.showForOverviewIfNeeded(launcher);
+    }
+
+    public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
+        return new PageAlphaProvider(DEACCEL_2) {
+            @Override
+            public float getPageAlpha(int pageIndex) {
+                return 0;
+            }
+        };
+    }
+
+    @Override
+    public int getVisibleElements(Launcher launcher) {
+        if (launcher.getDeviceProfile().isVerticalBarLayout()) {
+            return VERTICAL_SWIPE_INDICATOR;
+        } else {
+            return HOTSEAT_SEARCH_BOX | VERTICAL_SWIPE_INDICATOR |
+                    (launcher.getAppsView().getFloatingHeaderView().hasVisibleContent()
+                            ? ALL_APPS_HEADER_EXTRA : HOTSEAT_ICONS);
+        }
+    }
+
+    @Override
+    public float getWorkspaceScrimAlpha(Launcher launcher) {
+        return 0.5f;
+    }
+
+    @Override
+    public float getVerticalProgress(Launcher launcher) {
+        if ((getVisibleElements(launcher) & ALL_APPS_HEADER_EXTRA) == 0) {
+            // We have no all apps content, so we're still at the fully down progress.
+            return super.getVerticalProgress(launcher);
+        }
+        return 1 - (getDefaultSwipeHeight(launcher)
+                / launcher.getAllAppsController().getShiftRange());
+    }
+
+    @Override
+    public String getDescription(Launcher launcher) {
+        return launcher.getString(R.string.accessibility_desc_recent_apps);
+    }
+
+    public static float getDefaultSwipeHeight(Launcher launcher) {
+        DeviceProfile dp = launcher.getDeviceProfile();
+        return dp.allAppsCellHeightPx - dp.allAppsIconTextSizePx;
+    }
+
+    @Override
+    public void onBackPressed(Launcher launcher) {
+        TaskView taskView = launcher.<RecentsView>getOverviewPanel().getRunningTaskView();
+        if (taskView != null) {
+            taskView.launchTask(true);
+        } else {
+            super.onBackPressed(launcher);
+        }
+    }
+}