/*
 * This is the source code of Telegram for Android v. 3.x.x.
 * It is licensed under GNU GPL v. 2 or later.
 * You should have received a copy of the license in this archive (see LICENSE).
 *
 * Copyright Nikolai Kudashov, 2013-2017.
 */

package org.telegram.ui.ActionBar;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;

import org.telegram.messenger.AndroidUtilities;
import org.telegram.messenger.FileLog;
import org.telegram.messenger.LocaleController;
import org.telegram.messenger.R;
import org.telegram.ui.Components.LayoutHelper;
import org.telegram.ui.Components.LineProgressView;
import org.telegram.ui.Components.RadialProgressView;

public class AlertDialog extends Dialog implements Drawable.Callback {

    private View customView;
    private TextView titleTextView;
    private TextView subtitleTextView;
    private TextView messageTextView;
    private FrameLayout progressViewContainer;
    private TextView progressViewTextView;
    private ScrollView contentScrollView;
    private LinearLayout scrollContainer;
    private ViewTreeObserver.OnScrollChangedListener onScrollChangedListener;
    private BitmapDrawable shadow[] = new BitmapDrawable[2];
    private boolean shadowVisibility[] = new boolean[2];
    private AnimatorSet shadowAnimation[] = new AnimatorSet[2];

    private int lastScreenWidth;

    private OnClickListener onClickListener;
    private OnDismissListener onDismissListener;

    private CharSequence[] items;
    private int[] itemIcons;
    private CharSequence title;
    private CharSequence subtitle;
    private CharSequence message;
    private int topResId;
    private int topBackgroundColor;
    private int progressViewStyle;
    private int currentProgress;

    private ImageView topImageView;
    private CharSequence positiveButtonText;
    private OnClickListener positiveButtonListener;
    private CharSequence negativeButtonText;
    private OnClickListener negativeButtonListener;
    private CharSequence neutralButtonText;
    private OnClickListener neutralButtonListener;
    private FrameLayout buttonsLayout;
    private LineProgressView lineProgressView;
    private TextView lineProgressViewPercent;

    private Drawable shadowDrawable;
    private Rect backgroundPaddings;

    public static class AlertDialogCell extends FrameLayout {

        private TextView textView;
        private ImageView imageView;

        public AlertDialogCell(Context context) {
            super(context);

            setBackgroundDrawable(Theme.createSelectorDrawable(Theme.getColor(Theme.key_dialogButtonSelector), 2));
            setPadding(AndroidUtilities.dp(23), 0, AndroidUtilities.dp(23), 0);

            imageView = new ImageView(context);
            imageView.setScaleType(ImageView.ScaleType.CENTER);
            imageView.setColorFilter(new PorterDuffColorFilter(Theme.getColor(Theme.key_dialogIcon), PorterDuff.Mode.MULTIPLY));
            addView(imageView, LayoutHelper.createFrame(24, 24, Gravity.CENTER_VERTICAL | (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT)));

            textView = new TextView(context);
            textView.setLines(1);
            textView.setSingleLine(true);
            textView.setGravity(Gravity.CENTER_HORIZONTAL);
            textView.setEllipsize(TextUtils.TruncateAt.END);
            textView.setTextColor(Theme.getColor(Theme.key_dialogTextBlack));
            textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);
            addView(textView, LayoutHelper.createFrame(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.CENTER_VERTICAL));
        }

        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(AndroidUtilities.dp(48), MeasureSpec.EXACTLY));
        }

        public void setTextColor(int color) {
            textView.setTextColor(color);
        }

        public void setGravity(int gravity) {
            textView.setGravity(gravity);
        }

        public void setTextAndIcon(CharSequence text, int icon) {
            textView.setText(text);
            if (icon != 0) {
                imageView.setImageResource(icon);
                imageView.setVisibility(VISIBLE);
                textView.setPadding(LocaleController.isRTL ? 0 : AndroidUtilities.dp(56), 0, LocaleController.isRTL ? AndroidUtilities.dp(56) : 0, 0);
            } else {
                imageView.setVisibility(INVISIBLE);
                textView.setPadding(0, 0, 0, 0);
            }
        }
    }

    public AlertDialog(Context context, int progressStyle) {
        super(context, R.style.TransparentDialog);

        backgroundPaddings = new Rect();
        shadowDrawable = context.getResources().getDrawable(R.drawable.popup_fixed_alert).mutate();
        shadowDrawable.setColorFilter(new PorterDuffColorFilter(Theme.getColor(Theme.key_dialogBackground), PorterDuff.Mode.MULTIPLY));
        shadowDrawable.getPadding(backgroundPaddings);

        progressViewStyle = progressStyle;
    }

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

        LinearLayout containerView = new LinearLayout(getContext()) {

            private boolean inLayout;

            @Override
            protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
                inLayout = true;
                int width = MeasureSpec.getSize(widthMeasureSpec);
                int height = MeasureSpec.getSize(heightMeasureSpec);
                int maxContentHeight;
                int availableHeight = maxContentHeight = height - getPaddingTop() - getPaddingBottom();
                int availableWidth = width - getPaddingLeft() - getPaddingRight();

                int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(availableWidth - AndroidUtilities.dp(48), MeasureSpec.EXACTLY);
                int childFullWidthMeasureSpec = MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.EXACTLY);
                LayoutParams layoutParams;

                if (buttonsLayout != null) {
                    int count = buttonsLayout.getChildCount();
                    for (int a = 0; a < count; a++) {
                        TextView button = (TextView) buttonsLayout.getChildAt(a);
                        button.setMaxWidth(AndroidUtilities.dp((availableWidth - AndroidUtilities.dp(24)) / 2));
                    }
                    buttonsLayout.measure(childFullWidthMeasureSpec, heightMeasureSpec);
                    layoutParams = (LayoutParams) buttonsLayout.getLayoutParams();
                    availableHeight -= buttonsLayout.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;
                }
                if (titleTextView != null) {
                    titleTextView.measure(childWidthMeasureSpec, heightMeasureSpec);
                    layoutParams = (LayoutParams) titleTextView.getLayoutParams();
                    availableHeight -= titleTextView.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;
                }
                if (subtitleTextView != null) {
                    subtitleTextView.measure(childWidthMeasureSpec, heightMeasureSpec);
                    layoutParams = (LayoutParams) subtitleTextView.getLayoutParams();
                    availableHeight -= subtitleTextView.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;
                }
                if (topImageView != null) {
                    topImageView.measure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(AndroidUtilities.dp(132), MeasureSpec.EXACTLY));
                    availableHeight -= topImageView.getMeasuredHeight() - AndroidUtilities.dp(8);
                }
                if (progressViewStyle == 0) {
                    layoutParams = (LayoutParams) contentScrollView.getLayoutParams();

                    if (customView != null) {
                        layoutParams.topMargin = titleTextView == null && messageTextView.getVisibility() == GONE && items == null ? AndroidUtilities.dp(16) : 0;
                        layoutParams.bottomMargin = buttonsLayout == null ? AndroidUtilities.dp(8) : 0;
                    } else if (items != null) {
                        layoutParams.topMargin = titleTextView == null && messageTextView.getVisibility() == GONE ? AndroidUtilities.dp(8) : 0;
                        layoutParams.bottomMargin = AndroidUtilities.dp(8);
                    } else if (messageTextView.getVisibility() == VISIBLE) {
                        layoutParams.topMargin = titleTextView == null ? AndroidUtilities.dp(19) : 0;
                        layoutParams.bottomMargin = AndroidUtilities.dp(20);
                    }

                    availableHeight -= layoutParams.bottomMargin + layoutParams.topMargin;
                    contentScrollView.measure(childFullWidthMeasureSpec, MeasureSpec.makeMeasureSpec(availableHeight, MeasureSpec.AT_MOST));
                    availableHeight -= contentScrollView.getMeasuredHeight();
                } else {
                    if (progressViewContainer != null) {
                        progressViewContainer.measure(childWidthMeasureSpec, MeasureSpec.makeMeasureSpec(availableHeight, MeasureSpec.AT_MOST));
                        layoutParams = (LayoutParams) progressViewContainer.getLayoutParams();
                        availableHeight -= progressViewContainer.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;
                    } else if (messageTextView != null) {
                        messageTextView.measure(childWidthMeasureSpec, MeasureSpec.makeMeasureSpec(availableHeight, MeasureSpec.AT_MOST));
                        if (messageTextView.getVisibility() != GONE) {
                            layoutParams = (LayoutParams) messageTextView.getLayoutParams();
                            availableHeight -= messageTextView.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;
                        }
                    }
                    if (lineProgressView != null) {
                        lineProgressView.measure(childWidthMeasureSpec, MeasureSpec.makeMeasureSpec(AndroidUtilities.dp(4), MeasureSpec.EXACTLY));
                        layoutParams = (LayoutParams) lineProgressView.getLayoutParams();
                        availableHeight -= lineProgressView.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;

                        lineProgressViewPercent.measure(childWidthMeasureSpec, MeasureSpec.makeMeasureSpec(availableHeight, MeasureSpec.AT_MOST));
                        layoutParams = (LayoutParams) lineProgressViewPercent.getLayoutParams();
                        availableHeight -= lineProgressViewPercent.getMeasuredHeight() + layoutParams.bottomMargin + layoutParams.topMargin;
                    }
                }

                setMeasuredDimension(width, maxContentHeight - availableHeight + getPaddingTop() + getPaddingBottom());
                inLayout = false;

                if (lastScreenWidth != AndroidUtilities.displaySize.x) {
                    AndroidUtilities.runOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            lastScreenWidth = AndroidUtilities.displaySize.x;
                            final int calculatedWidth = AndroidUtilities.displaySize.x - AndroidUtilities.dp(56);
                            int maxWidth;
                            if (AndroidUtilities.isTablet()) {
                                if (AndroidUtilities.isSmallTablet()) {
                                    maxWidth = AndroidUtilities.dp(446);
                                } else {
                                    maxWidth = AndroidUtilities.dp(496);
                                }
                            } else {
                                maxWidth = AndroidUtilities.dp(356);
                            }

                            Window window = getWindow();
                            WindowManager.LayoutParams params = new WindowManager.LayoutParams();
                            params.copyFrom(window.getAttributes());
                            params.width = Math.min(maxWidth, calculatedWidth) + backgroundPaddings.left + backgroundPaddings.right;
                            window.setAttributes(params);
                        }
                    });
                }
            }

            @Override
            protected void onLayout(boolean changed, int l, int t, int r, int b) {
                super.onLayout(changed, l, t, r, b);
                if (contentScrollView != null) {
                    if (onScrollChangedListener == null) {
                        onScrollChangedListener = new ViewTreeObserver.OnScrollChangedListener() {
                            @Override
                            public void onScrollChanged() {
                                runShadowAnimation(0, titleTextView != null && contentScrollView.getScrollY() > scrollContainer.getTop());
                                runShadowAnimation(1, buttonsLayout != null && contentScrollView.getScrollY() + contentScrollView.getHeight() < scrollContainer.getBottom());
                                contentScrollView.invalidate();
                            }
                        };
                        contentScrollView.getViewTreeObserver().addOnScrollChangedListener(onScrollChangedListener);
                    }
                    onScrollChangedListener.onScrollChanged();
                }
            }

            @Override
            public void requestLayout() {
                if (inLayout) {
                    return;
                }
                super.requestLayout();
            }

            @Override
            public boolean hasOverlappingRendering() {
                return false;
            }
        };
        containerView.setOrientation(LinearLayout.VERTICAL);
        containerView.setBackgroundDrawable(shadowDrawable);
        containerView.setFitsSystemWindows(Build.VERSION.SDK_INT >= 21);
        setContentView(containerView);

        final boolean hasButtons = positiveButtonText != null || negativeButtonText != null || neutralButtonText != null;

        if (topResId != 0) {
            topImageView = new ImageView(getContext());
            topImageView.setImageResource(topResId);
            topImageView.setScaleType(ImageView.ScaleType.CENTER);
            topImageView.setBackgroundDrawable(getContext().getResources().getDrawable(R.drawable.popup_fixed_top));
            topImageView.getBackground().setColorFilter(new PorterDuffColorFilter(topBackgroundColor, PorterDuff.Mode.MULTIPLY));
            topImageView.setPadding(0, 0, 0, 0);
            containerView.addView(topImageView, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, 132, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP, -8, -8, 0, 0));
        }

        if (title != null) {
            titleTextView = new TextView(getContext());
            titleTextView.setText(title);
            titleTextView.setTextColor(Theme.getColor(Theme.key_dialogTextBlack));
            titleTextView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 20);
            titleTextView.setTypeface(AndroidUtilities.getTypeface("fonts/rmedium.ttf"));
            titleTextView.setGravity((LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP);
            containerView.addView(titleTextView, LayoutHelper.createLinear(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP, 24, 19, 24, (subtitle != null ? 2 : (items != null ? 14 : 10))));
        }

        if (subtitle != null) {
            subtitleTextView = new TextView(getContext());
            subtitleTextView.setText(subtitle);
            subtitleTextView.setTextColor(Theme.getColor(Theme.key_dialogIcon));
            subtitleTextView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
            subtitleTextView.setGravity((LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP);
            containerView.addView(subtitleTextView, LayoutHelper.createLinear(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP, 24, 0, 24, items != null ? 14 : 10));
        }

        if (progressViewStyle == 0) {
            shadow[0] = (BitmapDrawable) getContext().getResources().getDrawable(R.drawable.header_shadow).mutate();
            shadow[1] = (BitmapDrawable) getContext().getResources().getDrawable(R.drawable.header_shadow_reverse).mutate();
            shadow[0].setAlpha(0);
            shadow[1].setAlpha(0);
            shadow[0].setCallback(this);
            shadow[1].setCallback(this);

            contentScrollView = new ScrollView(getContext()) {
                @Override
                protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
                    boolean result = super.drawChild(canvas, child, drawingTime);
                    if (shadow[0].getPaint().getAlpha() != 0) {
                        shadow[0].setBounds(0, getScrollY(), getMeasuredWidth(), getScrollY() + AndroidUtilities.dp(3));
                        shadow[0].draw(canvas);
                    }
                    if (shadow[1].getPaint().getAlpha() != 0) {
                        shadow[1].setBounds(0, getScrollY() + getMeasuredHeight() - AndroidUtilities.dp(3), getMeasuredWidth(), getScrollY() + getMeasuredHeight());
                        shadow[1].draw(canvas);
                    }
                    return result;
                }
            };
            contentScrollView.setVerticalScrollBarEnabled(false);
            AndroidUtilities.setScrollViewEdgeEffectColor(contentScrollView, Theme.getColor(Theme.key_dialogScrollGlow));
            containerView.addView(contentScrollView, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, LayoutHelper.WRAP_CONTENT, 0, 0, 0, 0));

            scrollContainer = new LinearLayout(getContext());
            scrollContainer.setOrientation(LinearLayout.VERTICAL);
            contentScrollView.addView(scrollContainer, new ScrollView.LayoutParams(LayoutHelper.MATCH_PARENT, LayoutHelper.WRAP_CONTENT));
        }

        messageTextView = new TextView(getContext());
        messageTextView.setTextColor(Theme.getColor(Theme.key_dialogTextBlack));
        messageTextView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16);
        messageTextView.setGravity((LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP);
        if (progressViewStyle == 1) {
            progressViewContainer = new FrameLayout(getContext());
            containerView.addView(progressViewContainer, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, 44, Gravity.LEFT | Gravity.TOP, 23, title == null ? 24 : 0, 23, 24));

            RadialProgressView progressView = new RadialProgressView(getContext());
            progressView.setProgressColor(Theme.getColor(Theme.key_dialogProgressCircle));
            progressViewContainer.addView(progressView, LayoutHelper.createFrame(44, 44, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP));

            messageTextView.setLines(1);
            messageTextView.setSingleLine(true);
            messageTextView.setEllipsize(TextUtils.TruncateAt.END);
            progressViewContainer.addView(messageTextView, LayoutHelper.createFrame(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.CENTER_VERTICAL, (LocaleController.isRTL ? 0 : 62), 0, (LocaleController.isRTL ? 62 : 0), 0));
        } else if (progressViewStyle == 2) {
            containerView.addView(messageTextView, LayoutHelper.createLinear(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP, 24, title == null ? 19 : 0, 24, 20));

            lineProgressView = new LineProgressView(getContext());
            lineProgressView.setProgress(currentProgress / 100.0f, false);
            lineProgressView.setProgressColor(Theme.getColor(Theme.key_dialogLineProgress));
            lineProgressView.setBackColor(Theme.getColor(Theme.key_dialogLineProgressBackground));
            containerView.addView(lineProgressView, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, 4, Gravity.LEFT | Gravity.CENTER_VERTICAL, 24, 0, 24, 0));

            lineProgressViewPercent = new TextView(getContext());
            lineProgressViewPercent.setTypeface(AndroidUtilities.getTypeface("fonts/rmedium.ttf"));
            lineProgressViewPercent.setGravity((LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP);
            lineProgressViewPercent.setTextColor(Theme.getColor(Theme.key_dialogTextGray2));
            lineProgressViewPercent.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
            containerView.addView(lineProgressViewPercent, LayoutHelper.createLinear(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP, 23, 4, 23, 24));
            updateLineProgressTextView();
        } else {
            scrollContainer.addView(messageTextView, LayoutHelper.createLinear(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, (LocaleController.isRTL ? Gravity.RIGHT : Gravity.LEFT) | Gravity.TOP, 24, 0, 24, customView != null || items != null ? 20 : 0));
        }
        if (!TextUtils.isEmpty(message)) {
            messageTextView.setText(message);
            messageTextView.setVisibility(View.VISIBLE);
        } else {
            messageTextView.setVisibility(View.GONE);
        }

        if (items != null) {
            FrameLayout rowLayout = null;
            int lastRowLayoutNum = 0;
            for (int a = 0; a < items.length; a++) {
                if (items[a] == null) {
                    continue;
                }
                AlertDialogCell cell = new AlertDialogCell(getContext());
                cell.setTextAndIcon(items[a], itemIcons != null ? itemIcons[a] : 0);
                scrollContainer.addView(cell, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, 48));
                cell.setTag(a);
                cell.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (onClickListener != null) {
                            onClickListener.onClick(AlertDialog.this, (Integer) v.getTag());
                        }
                        dismiss();
                    }
                });
            }
        }
        if (customView != null) {
            if (customView.getParent() != null) {
                ViewGroup viewGroup = (ViewGroup) customView.getParent();
                viewGroup.removeView(customView);
            }
            scrollContainer.addView(customView, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, LayoutHelper.WRAP_CONTENT));
        }
        if (hasButtons) {
            buttonsLayout = new FrameLayout(getContext()) {
                @Override
                protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
                    int count = getChildCount();
                    View positiveButton = null;
                    int width = right - left;
                    for (int a = 0; a < count; a++) {
                        View child = getChildAt(a);
                        if ((Integer) child.getTag() == Dialog.BUTTON_POSITIVE) {
                            positiveButton = child;
                            child.layout(width - getPaddingRight() - child.getMeasuredWidth(), getPaddingTop(), width - getPaddingRight() + child.getMeasuredWidth(), getPaddingTop() + child.getMeasuredHeight());
                        } else if ((Integer) child.getTag() == Dialog.BUTTON_NEGATIVE) {
                            int x = width - getPaddingRight() - child.getMeasuredWidth();
                            if (positiveButton != null) {
                                x -= positiveButton.getMeasuredWidth() + AndroidUtilities.dp(8);
                            }
                            child.layout(x, getPaddingTop(), x + child.getMeasuredWidth(), getPaddingTop() + child.getMeasuredHeight());
                        } else {
                            child.layout(getPaddingLeft(), getPaddingTop(), getPaddingLeft() + child.getMeasuredWidth(), getPaddingTop() + child.getMeasuredHeight());
                        }
                    }
                }
            };
            buttonsLayout.setPadding(AndroidUtilities.dp(8), AndroidUtilities.dp(8), AndroidUtilities.dp(8), AndroidUtilities.dp(8));
            containerView.addView(buttonsLayout, LayoutHelper.createLinear(LayoutHelper.MATCH_PARENT, 52));

            if (positiveButtonText != null) {
                TextView textView = new TextView(getContext()) {
                    @Override
                    public void setEnabled(boolean enabled) {
                        super.setEnabled(enabled);
                        setAlpha(enabled ? 1.0f : 0.5f);
                    }
                };
                textView.setMinWidth(AndroidUtilities.dp(64));
                textView.setTag(Dialog.BUTTON_POSITIVE);
                textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
                textView.setTextColor(Theme.getColor(Theme.key_dialogButton));
                textView.setGravity(Gravity.CENTER);
                textView.setTypeface(AndroidUtilities.getTypeface("fonts/rmedium.ttf"));
//                textView.setLines(1);
//                textView.setSingleLine(true); //TODO
                textView.setText(positiveButtonText.toString().toUpperCase());
                textView.setBackgroundDrawable(Theme.getRoundRectSelectorDrawable());
                textView.setPadding(AndroidUtilities.dp(10), 0, AndroidUtilities.dp(10), 0);
                buttonsLayout.addView(textView, LayoutHelper.createFrame(LayoutHelper.WRAP_CONTENT, 36, Gravity.TOP | Gravity.RIGHT));
                textView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (positiveButtonListener != null) {
                            positiveButtonListener.onClick(AlertDialog.this, Dialog.BUTTON_POSITIVE);
                        }
                        dismiss();
                    }
                });
            }

            if (negativeButtonText != null) {
                TextView textView = new TextView(getContext()) {
                    @Override
                    public void setEnabled(boolean enabled) {
                        super.setEnabled(enabled);
                        setAlpha(enabled ? 1.0f : 0.5f);
                    }
                };
                textView.setMinWidth(AndroidUtilities.dp(64));
                textView.setTag(Dialog.BUTTON_NEGATIVE);
                textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
                textView.setTextColor(Theme.getColor(Theme.key_dialogButton));
                textView.setGravity(Gravity.CENTER);
                textView.setTypeface(AndroidUtilities.getTypeface("fonts/rmedium.ttf"));
//                textView.setLines(1);
//                textView.setSingleLine(true);
                textView.setText(negativeButtonText.toString().toUpperCase());
                textView.setBackgroundDrawable(Theme.getRoundRectSelectorDrawable());
                textView.setPadding(AndroidUtilities.dp(10), 0, AndroidUtilities.dp(10), 0);
                buttonsLayout.addView(textView, LayoutHelper.createFrame(LayoutHelper.WRAP_CONTENT, 36, Gravity.TOP | Gravity.RIGHT));
                textView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (negativeButtonListener != null) {
                            negativeButtonListener.onClick(AlertDialog.this, Dialog.BUTTON_NEGATIVE);
                        }
                        cancel();
                    }
                });
            }

            if (neutralButtonText != null) {
                TextView textView = new TextView(getContext()) {
                    @Override
                    public void setEnabled(boolean enabled) {
                        super.setEnabled(enabled);
                        setAlpha(enabled ? 1.0f : 0.5f);
                    }
                };
                textView.setMinWidth(AndroidUtilities.dp(64));
                textView.setTag(Dialog.BUTTON_NEUTRAL);
                textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
                textView.setTextColor(Theme.getColor(Theme.key_dialogButton));
                textView.setGravity(Gravity.CENTER);
                textView.setTypeface(AndroidUtilities.getTypeface("fonts/rmedium.ttf"));
//                textView.setLines(1);
//                textView.setSingleLine(true);
                textView.setText(neutralButtonText.toString().toUpperCase());
                textView.setBackgroundDrawable(Theme.getRoundRectSelectorDrawable());
                textView.setPadding(AndroidUtilities.dp(10), 0, AndroidUtilities.dp(10), 0);
                buttonsLayout.addView(textView, LayoutHelper.createFrame(LayoutHelper.WRAP_CONTENT, 36, Gravity.TOP | Gravity.LEFT));
                textView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (neutralButtonListener != null) {
                            neutralButtonListener.onClick(AlertDialog.this, Dialog.BUTTON_NEGATIVE);
                        }
                        dismiss();
                    }
                });
            }
        }

        lastScreenWidth = AndroidUtilities.displaySize.x;
        final int calculatedWidth = AndroidUtilities.displaySize.x - AndroidUtilities.dp(48);
        int maxWidth;
        if (AndroidUtilities.isTablet()) {
            if (AndroidUtilities.isSmallTablet()) {
                maxWidth = AndroidUtilities.dp(446);
            } else {
                maxWidth = AndroidUtilities.dp(496);
            }
        } else {
            maxWidth = AndroidUtilities.dp(356);
        }

        Window window = getWindow();
        WindowManager.LayoutParams params = new WindowManager.LayoutParams();
        params.copyFrom(window.getAttributes());
        params.dimAmount = 0.6f;
        params.width = Math.min(maxWidth, calculatedWidth) + backgroundPaddings.left + backgroundPaddings.right;
        params.flags |= WindowManager.LayoutParams.FLAG_DIM_BEHIND;
        if (customView == null || !canTextInput(customView)) {
            params.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
        }
        window.setAttributes(params);
    }

    private void runShadowAnimation(final int num, final boolean show) {
        if (show && !shadowVisibility[num] || !show && shadowVisibility[num]) {
            shadowVisibility[num] = show;
            if (shadowAnimation[num] != null) {
                shadowAnimation[num].cancel();
            }
            shadowAnimation[num] = new AnimatorSet();
            if (shadow[num] != null) {
                shadowAnimation[num].playTogether(ObjectAnimator.ofInt(shadow[num], "alpha", show ? 255 : 0));
            }
            shadowAnimation[num].setDuration(150);
            shadowAnimation[num].addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    if (shadowAnimation[num] != null && shadowAnimation[num].equals(animation)) {
                        shadowAnimation[num] = null;
                    }
                }

                @Override
                public void onAnimationCancel(Animator animation) {
                    if (shadowAnimation[num] != null && shadowAnimation[num].equals(animation)) {
                        shadowAnimation[num] = null;
                    }
                }
            });
            try {
                shadowAnimation[num].start();
            } catch (Exception e) {
                FileLog.e(e);
            }

        }
    }

    public void setProgressStyle(int style) {
        progressViewStyle = style;
    }

    public void setProgress(int progress) {
        currentProgress = progress;
        if (lineProgressView != null) {
            lineProgressView.setProgress(progress / 100.0f, true);
            updateLineProgressTextView();
        }
    }

    private void updateLineProgressTextView() {
        lineProgressViewPercent.setText(String.format("%d%%", currentProgress));
    }

    private boolean canTextInput(View v) {
        if (v.onCheckIsTextEditor()) {
            return true;
        }
        if (!(v instanceof ViewGroup)) {
            return false;
        }
        ViewGroup vg = (ViewGroup) v;
        int i = vg.getChildCount();
        while (i > 0) {
            i--;
            v = vg.getChildAt(i);
            if (canTextInput(v)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public void dismiss() {
        super.dismiss();
    }

    @Override
    public void setCanceledOnTouchOutside(boolean cancel) {
        super.setCanceledOnTouchOutside(cancel);
    }

    public void setMessage(CharSequence text) {
        message = text;
        if (messageTextView != null) {
            if (!TextUtils.isEmpty(message)) {
                messageTextView.setText(message);
                messageTextView.setVisibility(View.VISIBLE);
            } else {
                messageTextView.setVisibility(View.GONE);
            }
        }
    }

    public void setButton(int type, CharSequence text, final OnClickListener listener) {
        switch (type) {
            case BUTTON_NEUTRAL:
                neutralButtonText = text;
                neutralButtonListener = listener;
                break;
            case BUTTON_NEGATIVE:
                negativeButtonText = text;
                negativeButtonListener = listener;
                break;
            case BUTTON_POSITIVE:
                positiveButtonText = text;
                positiveButtonListener = listener;
                break;
        }
    }

    public View getButton(int type) {
        return buttonsLayout.findViewWithTag(type);
    }

    @Override
    public void invalidateDrawable(Drawable who) {
        contentScrollView.invalidate();
        scrollContainer.invalidate();
    }

    @Override
    public void scheduleDrawable(Drawable who, Runnable what, long when) {
        if (contentScrollView != null) {
            contentScrollView.postDelayed(what, when);
        }
    }

    @Override
    public void unscheduleDrawable(Drawable who, Runnable what) {
        if (contentScrollView != null) {
            contentScrollView.removeCallbacks(what);
        }
    }

    public static class Builder {

        private AlertDialog alertDialog;

        public Builder(Context context) {
            alertDialog = new AlertDialog(context, 0);
        }

        public Builder(Context context, int progressViewStyle) {
            alertDialog = new AlertDialog(context, progressViewStyle);
        }

        public Context getContext() {
            return alertDialog.getContext();
        }

        public Builder setItems(CharSequence[] items, final OnClickListener onClickListener) {
            alertDialog.items = items;
            alertDialog.onClickListener = onClickListener;
            return this;
        }

        public Builder setItems(CharSequence[] items, int[] icons, final OnClickListener onClickListener) {
            alertDialog.items = items;
            alertDialog.itemIcons = icons;
            alertDialog.onClickListener = onClickListener;
            return this;
        }

        public Builder setView(View view) {
            alertDialog.customView = view;
            return this;
        }

        public Builder setTitle(CharSequence title) {
            alertDialog.title = title;
            return this;
        }

        public Builder setSubtitle(CharSequence subtitle) {
            alertDialog.subtitle = subtitle;
            return this;
        }

        public Builder setTopImage(int resId, int backgroundColor) {
            alertDialog.topResId = resId;
            alertDialog.topBackgroundColor = backgroundColor;
            return this;
        }

        public Builder setMessage(CharSequence message) {
            alertDialog.message = message;
            return this;
        }

        public Builder setPositiveButton(CharSequence text, final OnClickListener listener) {
            alertDialog.positiveButtonText = text;
            alertDialog.positiveButtonListener = listener;
            return this;
        }

        public Builder setNegativeButton(CharSequence text, final OnClickListener listener) {
            alertDialog.negativeButtonText = text;
            alertDialog.negativeButtonListener = listener;
            return this;
        }

        public Builder setNeutralButton(CharSequence text, final OnClickListener listener) {
            alertDialog.neutralButtonText = text;
            alertDialog.neutralButtonListener = listener;
            return this;
        }

        public AlertDialog create() {
            return alertDialog;
        }

        public AlertDialog show() {
            alertDialog.show();
            return alertDialog;
        }

        public Builder setOnDismissListener(OnDismissListener onDismissListener) {
            alertDialog.setOnDismissListener(onDismissListener);
            return this;
        }
    }
}