| /* |
| * Copyright (C) 2015 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.design.widget; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.support.annotation.LayoutRes; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.StyleRes; |
| import android.support.design.R; |
| import android.support.v4.view.AccessibilityDelegateCompat; |
| import android.support.v4.view.ViewCompat; |
| import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat; |
| import android.support.v7.app.AppCompatDialog; |
| import android.util.TypedValue; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.Window; |
| import android.view.WindowManager; |
| import android.widget.FrameLayout; |
| |
| /** |
| * Base class for {@link android.app.Dialog}s styled as a bottom sheet. |
| */ |
| public class BottomSheetDialog extends AppCompatDialog { |
| |
| private BottomSheetBehavior<FrameLayout> mBehavior; |
| |
| boolean mCancelable = true; |
| private boolean mCanceledOnTouchOutside = true; |
| private boolean mCanceledOnTouchOutsideSet; |
| |
| public BottomSheetDialog(@NonNull Context context) { |
| this(context, 0); |
| } |
| |
| public BottomSheetDialog(@NonNull Context context, @StyleRes int theme) { |
| super(context, getThemeResId(context, theme)); |
| // We hide the title bar for any style configuration. Otherwise, there will be a gap |
| // above the bottom sheet when it is expanded. |
| supportRequestWindowFeature(Window.FEATURE_NO_TITLE); |
| } |
| |
| protected BottomSheetDialog(@NonNull Context context, boolean cancelable, |
| OnCancelListener cancelListener) { |
| super(context, cancelable, cancelListener); |
| supportRequestWindowFeature(Window.FEATURE_NO_TITLE); |
| mCancelable = cancelable; |
| } |
| |
| @Override |
| public void setContentView(@LayoutRes int layoutResId) { |
| super.setContentView(wrapInBottomSheet(layoutResId, null, null)); |
| } |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| Window window = getWindow(); |
| if (window != null) { |
| if (Build.VERSION.SDK_INT >= 21) { |
| window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); |
| window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); |
| } |
| window.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, |
| ViewGroup.LayoutParams.MATCH_PARENT); |
| } |
| } |
| |
| @Override |
| public void setContentView(View view) { |
| super.setContentView(wrapInBottomSheet(0, view, null)); |
| } |
| |
| @Override |
| public void setContentView(View view, ViewGroup.LayoutParams params) { |
| super.setContentView(wrapInBottomSheet(0, view, params)); |
| } |
| |
| @Override |
| public void setCancelable(boolean cancelable) { |
| super.setCancelable(cancelable); |
| if (mCancelable != cancelable) { |
| mCancelable = cancelable; |
| if (mBehavior != null) { |
| mBehavior.setHideable(cancelable); |
| } |
| } |
| } |
| |
| @Override |
| protected void onStart() { |
| super.onStart(); |
| if (mBehavior != null) { |
| mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED); |
| } |
| } |
| |
| @Override |
| public void setCanceledOnTouchOutside(boolean cancel) { |
| super.setCanceledOnTouchOutside(cancel); |
| if (cancel && !mCancelable) { |
| mCancelable = true; |
| } |
| mCanceledOnTouchOutside = cancel; |
| mCanceledOnTouchOutsideSet = true; |
| } |
| |
| private View wrapInBottomSheet(int layoutResId, View view, ViewGroup.LayoutParams params) { |
| final FrameLayout container = (FrameLayout) View.inflate(getContext(), |
| R.layout.design_bottom_sheet_dialog, null); |
| final CoordinatorLayout coordinator = |
| (CoordinatorLayout) container.findViewById(R.id.coordinator); |
| if (layoutResId != 0 && view == null) { |
| view = getLayoutInflater().inflate(layoutResId, coordinator, false); |
| } |
| FrameLayout bottomSheet = (FrameLayout) coordinator.findViewById(R.id.design_bottom_sheet); |
| mBehavior = BottomSheetBehavior.from(bottomSheet); |
| mBehavior.setBottomSheetCallback(mBottomSheetCallback); |
| mBehavior.setHideable(mCancelable); |
| if (params == null) { |
| bottomSheet.addView(view); |
| } else { |
| bottomSheet.addView(view, params); |
| } |
| // We treat the CoordinatorLayout as outside the dialog though it is technically inside |
| coordinator.findViewById(R.id.touch_outside).setOnClickListener(new View.OnClickListener() { |
| @Override |
| public void onClick(View view) { |
| if (mCancelable && isShowing() && shouldWindowCloseOnTouchOutside()) { |
| cancel(); |
| } |
| } |
| }); |
| // Handle accessibility events |
| ViewCompat.setAccessibilityDelegate(bottomSheet, new AccessibilityDelegateCompat() { |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, |
| AccessibilityNodeInfoCompat info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| if (mCancelable) { |
| info.addAction(AccessibilityNodeInfoCompat.ACTION_DISMISS); |
| info.setDismissable(true); |
| } else { |
| info.setDismissable(false); |
| } |
| } |
| |
| @Override |
| public boolean performAccessibilityAction(View host, int action, Bundle args) { |
| if (action == AccessibilityNodeInfoCompat.ACTION_DISMISS && mCancelable) { |
| cancel(); |
| return true; |
| } |
| return super.performAccessibilityAction(host, action, args); |
| } |
| }); |
| bottomSheet.setOnTouchListener(new View.OnTouchListener() { |
| @Override |
| public boolean onTouch(View view, MotionEvent event) { |
| // Consume the event and prevent it from falling through |
| return true; |
| } |
| }); |
| return container; |
| } |
| |
| boolean shouldWindowCloseOnTouchOutside() { |
| if (!mCanceledOnTouchOutsideSet) { |
| if (Build.VERSION.SDK_INT < 11) { |
| mCanceledOnTouchOutside = true; |
| } else { |
| TypedArray a = getContext().obtainStyledAttributes( |
| new int[]{android.R.attr.windowCloseOnTouchOutside}); |
| mCanceledOnTouchOutside = a.getBoolean(0, true); |
| a.recycle(); |
| } |
| mCanceledOnTouchOutsideSet = true; |
| } |
| return mCanceledOnTouchOutside; |
| } |
| |
| private static int getThemeResId(Context context, int themeId) { |
| if (themeId == 0) { |
| // If the provided theme is 0, then retrieve the dialogTheme from our theme |
| TypedValue outValue = new TypedValue(); |
| if (context.getTheme().resolveAttribute( |
| R.attr.bottomSheetDialogTheme, outValue, true)) { |
| themeId = outValue.resourceId; |
| } else { |
| // bottomSheetDialogTheme is not provided; we default to our light theme |
| themeId = R.style.Theme_Design_Light_BottomSheetDialog; |
| } |
| } |
| return themeId; |
| } |
| |
| private BottomSheetBehavior.BottomSheetCallback mBottomSheetCallback |
| = new BottomSheetBehavior.BottomSheetCallback() { |
| @Override |
| public void onStateChanged(@NonNull View bottomSheet, |
| @BottomSheetBehavior.State int newState) { |
| if (newState == BottomSheetBehavior.STATE_HIDDEN) { |
| cancel(); |
| } |
| } |
| |
| @Override |
| public void onSlide(@NonNull View bottomSheet, float slideOffset) { |
| } |
| }; |
| |
| } |