ru.ifmo.android_2016.irc.drawee.DraweeTextView.java Source code

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Here is the source code for ru.ifmo.android_2016.irc.drawee.DraweeTextView.java

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package ru.ifmo.android_2016.irc.drawee;/*
                                        * Copyright (C) 2016 Bilibili
                                        *
                                        * 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.annotation.TargetApi;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.v4.graphics.ColorUtils;
import android.text.Spanned;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.widget.TextView;

import com.facebook.drawee.drawable.ForwardingDrawable;
import com.facebook.imagepipeline.animated.base.AnimatableDrawable;

import ru.ifmo.android_2016.irc.R;
import ru.ifmo.android_2016.irc.client.MessageText;

/**
 * Like {@link com.facebook.drawee.view.DraweeView} that displays drawables  but surrounded with text.
 *
 * @author yrom
 */
public class DraweeTextView extends TextView {
    private MessageText msg;

    public DraweeTextView(Context context) {
        super(context);
    }

    public DraweeTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public DraweeTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @SuppressWarnings("unused")
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public DraweeTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    private boolean mHasDraweeInText;

    @Override
    public void setText(CharSequence text, BufferType type) {
        if (mHasDraweeInText) {
            onDetach(); // detach all old images
            mHasDraweeInText = false;
        }
        if (text instanceof Spanned) {
            // find DraweeSpan in text
            DraweeSpan[] spans = ((Spanned) text).getSpans(0, text.length(), DraweeSpan.class);
            mHasDraweeInText = spans.length > 0;
        }
        super.setText(text, type);
    }

    @SuppressWarnings("deprecation")
    public void setMessage(MessageText message) {
        setBackgroundColor(Color.TRANSPARENT);

        TypedValue typedValue = new TypedValue();
        Resources.Theme theme = getContext().getTheme();
        theme.resolveAttribute(R.attr.background, typedValue, true);
        int color = typedValue.data;

        if (message.isMentioned()) {
            setBackgroundColor(ColorUtils.blendARGB(color, Color.RED, 0.6f));
        }
        if (message.isWhisper()) {
            setBackgroundColor(ColorUtils.blendARGB(color, Color.GREEN, 0.6f));
        }
        if (message.isTwitchNotify()) {
            setBackgroundColor(ColorUtils.blendARGB(color, getResources().getColor(R.color.colorTwitch), 0.6f));
            setText(message.getText());
        } else {
            setText(message.getSpanned());
        }

        this.msg = message;
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        onAttach();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        onDetach();
    }

    @Override
    public void onStartTemporaryDetach() {
        super.onStartTemporaryDetach();
        onDetach();
    }

    @Override
    public void onFinishTemporaryDetach() {
        super.onFinishTemporaryDetach();
        onAttach();
    }

    @Override
    public void invalidateDrawable(@NonNull Drawable dr) {
        if (mHasDraweeInText) {
            /* invalidate the whole view in this case because it's very
             * hard to know what the bounds of drawables actually is.
             */
            invalidate();
        } else {
            super.invalidateDrawable(dr);
        }
    }

    @Override
    protected boolean verifyDrawable(@NonNull Drawable who) {
        return super.verifyDrawable(who) || mHasDraweeInText
                // only schedule animation on AnimatableDrawable
                && (who instanceof ForwardingDrawable && who.getCurrent() instanceof AnimatableDrawable);
    }

    /**
     * Attach DraweeSpans in text
     */
    final void onAttach() {
        DraweeSpan[] images = getImages();
        for (DraweeSpan image : images) {
            image.onAttach(this);
        }
    }

    private DraweeSpan[] getImages() {
        if (mHasDraweeInText && length() > 0)
            return ((Spanned) getText()).getSpans(0, length(), DraweeSpan.class);
        return new DraweeSpan[0]; //TODO: pool empty typed array
    }

    /**
     * Detach all of the DraweeSpans in text
     */
    final void onDetach() {
        DraweeSpan[] images = getImages();
        for (DraweeSpan image : images) {
            Drawable drawable = image.getDrawable();
            // reset callback first
            if (drawable != null) {
                unscheduleDrawable(drawable);
            }
            image.onDetach();
        }
    }

    public MessageText getMessage() {
        return msg;
    }
}