in.srain.demos.vector.BSDialog.java Source code

Introduction

Here is the source code for in.srain.demos.vector.BSDialog.java

Source

package in.srain.demos.vector;/*
                              * 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.
                              */

import android.content.Context;
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.design.widget.BottomSheetBehavior;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.view.MotionEventCompat;
import android.support.v7.app.AppCompatDialog;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;

/**
 * Base class for {@link android.app.Dialog}s styled as a bottom sheet.
 */
public class BSDialog extends AppCompatDialog {

    public BSDialog(@NonNull Context context) {
        this(context, 0);
    }

    public BSDialog(@NonNull Context context, @StyleRes int theme) {
        super(context, getThemeResId(context, theme));
    }

    protected BSDialog(@NonNull Context context, boolean cancelable, OnCancelListener cancelListener) {
        super(context, cancelable, cancelListener);
    }

    @Override
    public void setContentView(@LayoutRes int layoutResId) {
        super.setContentView(wrapInBottomSheet(layoutResId, null, null));
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().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));
    }

    private View wrapInBottomSheet(int layoutResId, View view, ViewGroup.LayoutParams params) {
        final CoordinatorLayout coordinator = (CoordinatorLayout) View.inflate(getContext(),
                R.layout.design_bottom_sheet_dialog, null);
        if (layoutResId != 0 && view == null) {
            view = getLayoutInflater().inflate(layoutResId, coordinator, false);
        }
        FrameLayout bottomSheet = (FrameLayout) coordinator.findViewById(R.id.design_bottom_sheet);
        BottomSheetBehavior b = BottomSheetBehavior.from(bottomSheet);
        b.setBottomSheetCallback(mBottomSheetCallback);
        b.setPeekHeight(900);

        if (params == null) {
            bottomSheet.addView(view);
        } else {
            bottomSheet.addView(view, params);
        }
        // We treat the CoordinatorLayout as outside the dialog though it is technically inside
        if (shouldWindowCloseOnTouchOutside()) {
            final View finalView = view;
            coordinator.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    if (isShowing() && MotionEventCompat.getActionMasked(event) == MotionEvent.ACTION_UP
                            && !coordinator.isPointInChildBounds(finalView, (int) event.getX(),
                                    (int) event.getY())) {
                        cancel();
                        return true;
                    }
                    return false;
                }
            });
        }
        return coordinator;
    }

    private boolean shouldWindowCloseOnTouchOutside() {
        if (Build.VERSION.SDK_INT < 11) {
            return true;
        }
        TypedValue value = new TypedValue();
        //noinspection SimplifiableIfStatement
        if (getContext().getTheme().resolveAttribute(android.R.attr.windowCloseOnTouchOutside, value, true)) {
            return value.data != 0;
        }
        return false;
    }

    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) {
                dismiss();
            }
        }

        @Override
        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
        }
    };

}