webapps/addtohomescreen/AddToHomescreenDialogView.java

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.chrome.browser.webapps.addtohomescreen;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.drawable.Icon;
import android.os.Build;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RatingBar;
import android.widget.TextView;

import androidx.annotation.VisibleForTesting;

import org.chromium.base.ContextUtils;
import org.chromium.chrome.R;
import org.chromium.chrome.browser.banners.AppBannerManager;
import org.chromium.ui.modaldialog.DialogDismissalCause;
import org.chromium.ui.modaldialog.ModalDialogManager;
import org.chromium.ui.modaldialog.ModalDialogProperties;
import org.chromium.ui.modelutil.PropertyModel;

/**
 * Displays the "Add to Homescreen" dialog, which contains a (possibly editable) title, icon, and
 * possibly an origin.
 *
 * When the constructor is called, the dialog is shown immediately. A spinner is displayed if any
 * data is not yet fetched, and accepting the dialog is disabled until all data is available and in
 * its place on the screen.
 */
class AddToHomescreenDialogView implements View.OnClickListener, ModalDialogProperties.Controller {
    private PropertyModel mDialogModel;
    private ModalDialogManager mModalDialogManager;
    @VisibleForTesting
    protected AddToHomescreenViewDelegate mDelegate;

    private View mParentView;
    /**
     * {@link #mShortcutTitleInput} and the {@link #mAppLayout} are mutually exclusive, depending on
     * whether the home screen item is a bookmark shortcut or a web/native app.
     */
    private EditText mShortcutTitleInput;
    private LinearLayout mAppLayout;
    private TextView mAppNameView;
    private TextView mAppOriginView;
    private RatingBar mAppRatingBar;
    private ImageView mPlayLogoView;

    private View mProgressBarView;
    private ImageView mIconView;

    private boolean mCanSubmit;

    AddToHomescreenDialogView(Context context, ModalDialogManager modalDialogManager,
            AppBannerManager.InstallStringPair installStrings,
            AddToHomescreenViewDelegate delegate) {
        assert delegate != null;

        mModalDialogManager = modalDialogManager;
        mDelegate = delegate;
        mParentView = LayoutInflater.from(context).inflate(R.layout.add_to_homescreen_dialog, null);

        mProgressBarView = mParentView.findViewById(R.id.spinny);
        mIconView = (ImageView) mParentView.findViewById(R.id.icon);
        mShortcutTitleInput = mParentView.findViewById(R.id.text);
        mAppLayout = (LinearLayout) mParentView.findViewById(R.id.app_info);

        mAppNameView = (TextView) mAppLayout.findViewById(R.id.name);
        mAppOriginView = (TextView) mAppLayout.findViewById(R.id.origin);
        mAppRatingBar = (RatingBar) mAppLayout.findViewById(R.id.control_rating);
        mPlayLogoView = (ImageView) mParentView.findViewById(R.id.play_logo);

        mAppNameView.setOnClickListener(this);
        mIconView.setOnClickListener(this);

        mParentView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
            @Override
            public void onLayoutChange(View v, int left, int top, int right, int bottom,
                    int oldLeft, int oldTop, int oldRight, int oldBottom) {
                if (mProgressBarView.getMeasuredHeight() == mShortcutTitleInput.getMeasuredHeight()
                        && mShortcutTitleInput.getBackground() != null) {
                    // Force the text field to align better with the icon by accounting for the
                    // padding introduced by the background drawable.
                    mShortcutTitleInput.getLayoutParams().height =
                            mProgressBarView.getMeasuredHeight()
                            + mShortcutTitleInput.getPaddingBottom();
                    v.requestLayout();
                    v.removeOnLayoutChangeListener(this);
                }
            }
        });

        // The "Add" button should be disabled if the dialog's text field is empty.
        mShortcutTitleInput.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {}

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            @Override
            public void afterTextChanged(Editable editableText) {
                updateInstallButton();
            }
        });

        Resources resources = context.getResources();
        mDialogModel =
                new PropertyModel.Builder(ModalDialogProperties.ALL_KEYS)
                        .with(ModalDialogProperties.CONTROLLER, this)
                        .with(ModalDialogProperties.TITLE, resources, installStrings.titleTextId)
                        .with(ModalDialogProperties.POSITIVE_BUTTON_TEXT, resources,
                                installStrings.buttonTextId)
                        .with(ModalDialogProperties.POSITIVE_BUTTON_DISABLED, true)
                        .with(ModalDialogProperties.NEGATIVE_BUTTON_TEXT, resources,
                                R.string.cancel)
                        .with(ModalDialogProperties.CUSTOM_VIEW, mParentView)
                        .with(ModalDialogProperties.CANCEL_ON_TOUCH_OUTSIDE, true)
                        .build();
        mModalDialogManager.showDialog(mDialogModel, ModalDialogManager.ModalDialogType.APP);
    }

    void setTitle(String title) {
        mAppNameView.setText(title);
        mShortcutTitleInput.setText(title);
    }

    void setUrl(String url) {
        mAppOriginView.setText(url);
    }

    void setIcon(Bitmap icon, boolean isAdaptive) {
        if (isAdaptive && Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            setAdaptiveIcon(icon);
        } else {
            assert !isAdaptive : "Adaptive icons should not be provided pre-Android O.";
            mIconView.setImageBitmap(icon);
        }
        mProgressBarView.setVisibility(View.GONE);
        mIconView.setVisibility(View.VISIBLE);
    }

    @TargetApi(Build.VERSION_CODES.O)
    private void setAdaptiveIcon(Bitmap icon) {
        mIconView.setImageIcon(Icon.createWithAdaptiveBitmap(icon));
    }

    void setType(@AppType int type) {
        assert (type >= AppType.NATIVE && type <= AppType.SHORTCUT);

        mShortcutTitleInput.setVisibility(type == AppType.SHORTCUT ? View.VISIBLE : View.GONE);
        mAppLayout.setVisibility(type != AppType.SHORTCUT ? View.VISIBLE : View.GONE);
        mAppOriginView.setVisibility(type == AppType.WEBAPK ? View.VISIBLE : View.GONE);
        mAppRatingBar.setVisibility(type == AppType.NATIVE ? View.VISIBLE : View.GONE);
        mPlayLogoView.setVisibility(type == AppType.NATIVE ? View.VISIBLE : View.GONE);
    }

    void setNativeInstallButtonText(String installButtonText) {
        mDialogModel.set(ModalDialogProperties.POSITIVE_BUTTON_TEXT, installButtonText);
        mDialogModel.set(ModalDialogProperties.POSITIVE_BUTTON_CONTENT_DESCRIPTION,
                ContextUtils.getApplicationContext().getString(
                        R.string.app_banner_view_native_app_install_accessibility,
                        installButtonText));
    }

    void setNativeAppRating(float rating) {
        mAppRatingBar.setRating(rating);
        mPlayLogoView.setImageResource(R.drawable.google_play);
    }

    void setCanSubmit(boolean canSubmit) {
        mCanSubmit = canSubmit;
        updateInstallButton();
    }

    private void updateInstallButton() {
        boolean missingTitle = mShortcutTitleInput.getVisibility() == View.VISIBLE
                && TextUtils.isEmpty(mShortcutTitleInput.getText());
        mDialogModel.set(
                ModalDialogProperties.POSITIVE_BUTTON_DISABLED, !mCanSubmit || missingTitle);
    }

    /**
     * From {@link View.OnClickListener}. Called when the views that have this class registered as
     * their {@link View.OnClickListener} are clicked.
     *
     * @param v The view that was clicked.
     */
    @Override
    public void onClick(View v) {
        if ((v == mAppNameView || v == mIconView)) {
            if (mDelegate.onAppDetailsRequested()) {
                mModalDialogManager.dismissDialog(
                        mDialogModel, DialogDismissalCause.ACTION_ON_CONTENT);
            }
        }
    }

    /**
     * From {@link  ModalDialogProperties.Controller}. Called when a dialog button is clicked.
     *
     * @param model The dialog model that is associated with this click event.
     * @param buttonType The type of the button.
     */
    @Override
    public void onClick(PropertyModel model, int buttonType) {
        int dismissalCause = DialogDismissalCause.NEGATIVE_BUTTON_CLICKED;
        if (buttonType == ModalDialogProperties.ButtonType.POSITIVE) {
            mDelegate.onAddToHomescreen(mShortcutTitleInput.getText().toString());
            dismissalCause = DialogDismissalCause.POSITIVE_BUTTON_CLICKED;
        }
        mModalDialogManager.dismissDialog(mDialogModel, dismissalCause);
    }

    @Override
    public void onDismiss(PropertyModel model, int dismissalCause) {
        if (dismissalCause == DialogDismissalCause.POSITIVE_BUTTON_CLICKED) return;

        mDelegate.onViewDismissed();
    }

    @VisibleForTesting
    View getParentViewForTest() {
        return mParentView;
    }
}