Android Open Source - FPlayAndroid File View

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The source code is released under:
Copyright (c) 2013-2014, Carlos Rafael Gimenes das Neves All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the followin...
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Java Source Code

//
// FPlayAndroid is distributed under the FreeBSD License
////from   w  w w . j ava 2s  .c  om
// Copyright (c) 2013-2014, Carlos Rafael Gimenes das Neves
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation are those
// of the authors and should not be interpreted as representing official policies,
// either expressed or implied, of the FreeBSD Project.
//
// https://github.com/carlosrafaelgn/FPlayAndroid
//
package br.com.carlosrafaelgn.fplay.ui;

import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.SystemClock;
import android.view.Gravity;
import android.view.View;
import android.view.ViewDebug.ExportedProperty;
import android.widget.LinearLayout;

import br.com.carlosrafaelgn.fplay.R;
import br.com.carlosrafaelgn.fplay.list.AlbumArtFetcher;
import br.com.carlosrafaelgn.fplay.list.FileSt;
import br.com.carlosrafaelgn.fplay.ui.drawable.TextIconDrawable;
import br.com.carlosrafaelgn.fplay.util.ReleasableBitmapWrapper;

public final class FileView extends LinearLayout implements View.OnClickListener, View.OnLongClickListener, AlbumArtFetcher.AlbumArtFetcherListener, Handler.Callback {
  private AlbumArtFetcher albumArtFetcher;
  private Handler handler;
  private ReleasableBitmapWrapper albumArt;
  private FileSt file;
  private BgButton btnAdd, btnPlay;
  private String icon, ellipsizedName;
  private boolean buttonsVisible, pendingAlbumArtRequest;
  private final boolean hasButtons, buttonIsCheckbox;
  private int state, width, position, requestId, bitmapLeftPadding, leftPadding;
  
  private static int height, verticalMargin, usableHeight;
  
  public static int getViewHeight() {
    verticalMargin = (UI.isVerticalMarginLarge ? UI._16sp : UI._8sp);
    height = (verticalMargin << 1) + Math.max(UI.defaultControlContentsSize, UI._22spBox);
    usableHeight = height - (UI.isDividerVisible ? UI.strokeSize : 0);
    return height;
  }
  
  public FileView(Context context, AlbumArtFetcher albumArtFetcher, boolean hasButtons, boolean buttonIsCheckbox) {
    super(context);
    this.albumArtFetcher = albumArtFetcher;
    if (albumArtFetcher != null)
      handler = new Handler(Looper.getMainLooper(), this);
    setOnClickListener(this);
    setOnLongClickListener(this);
    setBaselineAligned(false);
    setGravity(Gravity.RIGHT);
    getViewHeight();
    if (hasButtons) {
      LayoutParams p;
      if (!buttonIsCheckbox) {
        btnAdd = new BgButton(context);
        btnAdd.setHideBorders(true);
        p = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
        p.bottomMargin = (UI.isDividerVisible ? UI.strokeSize : 0);
        btnAdd.setLayoutParams(p);
        btnAdd.setIcon(UI.ICON_ADD, true, false);
        btnAdd.setContentDescription(context.getText(R.string.add));
        btnAdd.setOnClickListener(this);
        btnAdd.setTextColor(UI.colorState_text_selected_static);
        addView(btnAdd);
      }
      btnPlay = new BgButton(context);
      btnPlay.setHideBorders(true);
      p = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
      p.leftMargin = UI._8dp;
      p.bottomMargin = (UI.isDividerVisible ? UI.strokeSize : 0);
      btnPlay.setLayoutParams(p);
      if (buttonIsCheckbox) {
        btnPlay.setIcon(UI.ICON_OPTCHK, UI.ICON_OPTUNCHK, false, true, true, false);
        btnPlay.setContentDescription(context.getText(R.string.unselect), context.getText(R.string.select));
        btnPlay.setTextColor(UI.colorState_text_listitem_reactive);
      } else {
        btnPlay.setIcon(UI.ICON_PLAY, true, false);
        btnPlay.setContentDescription(context.getText(R.string.play));
        btnPlay.setTextColor(UI.colorState_text_selected_static);
      }
      btnPlay.setOnClickListener(this);
      addView(btnPlay);
    } else {
      btnAdd = null;
      btnPlay = null;
    }
    this.hasButtons = hasButtons;
    this.buttonIsCheckbox = buttonIsCheckbox;
    buttonsVisible = hasButtons;
    super.setDrawingCacheEnabled(false);
  }
  
  private void processEllipsis() {
    ellipsizedName = UI.ellipsizeText(file.name, UI._22sp, width - leftPadding - (buttonsVisible ? (buttonIsCheckbox ? (UI.defaultControlContentsSize + (UI._8dp << 1)) : ((UI.defaultControlContentsSize << 1) + (UI._8dp << 2))) : 0) - UI._8dp, true);
  }
  
  public void refreshItem() {
    //tiny workaround ;)
    buttonsVisible = !buttonsVisible;
    setItemState(file, position, state);
    invalidate();
  }

  @Override
  public CharSequence getContentDescription() {
    if (file != null) {
      if (buttonIsCheckbox && btnPlay != null && btnPlay.getVisibility() == View.VISIBLE)
        return file.name + ": " + getContext().getText(file.isChecked ? R.string.selected : R.string.unselected);
      return file.name;
    }
    return super.getContentDescription();
  }

  public void setItemState(FileSt file, int position, int state) {
    if (file == null)
      return;
    final int specialType = file.specialType;
    final boolean showButtons = (hasButtons && ((specialType == 0) || (specialType == FileSt.TYPE_ALBUM) || (specialType == FileSt.TYPE_ALBUM_ITEM) || (specialType == FileSt.TYPE_ARTIST)) && (buttonIsCheckbox || ((state & UI.STATE_SELECTED) != 0)));
    final boolean specialTypeChanged = ((this.file != null) && (this.file.specialType != specialType));
    this.position = position;
    if (buttonIsCheckbox && btnPlay != null) {
      if (specialTypeChanged || this.file != file || (this.state & UI.STATE_SELECTED) != (state & UI.STATE_SELECTED))
        //btnPlay.setTextColor((state != 0) ? UI.colorState_text_selected_static : ((specialType == FileSt.TYPE_ALBUM_ITEM) ? UI.colorState_text_highlight_reactive : UI.colorState_text_listitem_reactive));
        btnPlay.setTextColor(((state != 0) || (specialType == FileSt.TYPE_ALBUM_ITEM)) ? UI.colorState_text_selected_static : UI.colorState_text_listitem_reactive);
        //btnPlay.setTextColor((state != 0) ? UI.colorState_text_selected_static : ((specialType == FileSt.TYPE_ALBUM_ITEM) ? UI.colorState_text_reactive : UI.colorState_text_listitem_reactive));
      btnPlay.setChecked(file.isChecked);
    }
    this.state = (this.state & ~(UI.STATE_CURRENT | UI.STATE_SELECTED | UI.STATE_MULTISELECTED)) | state;
    //watch out, DO NOT use equals() in favor of speed!
    if (this.file == file && buttonsVisible == showButtons)
      return;
    this.file = file;
    if (buttonsVisible != showButtons) {
      buttonsVisible = showButtons;
      if (btnAdd != null)
        btnAdd.setVisibility(showButtons ? View.VISIBLE : View.GONE);
      if (btnPlay != null)
        btnPlay.setVisibility(showButtons ? View.VISIBLE : View.GONE);
    }
    if (pendingAlbumArtRequest && albumArtFetcher != null) {
      pendingAlbumArtRequest = false;
      albumArtFetcher.cancelRequest(requestId, this);
    }
    requestId++;
    if (albumArt != null) {
      albumArt.release();
      albumArt = null;
    }
    if (file.isDirectory) {
      ReleasableBitmapWrapper newAlbumArt;
      switch (specialType) {
      case FileSt.TYPE_INTERNAL_STORAGE:
        icon = UI.ICON_SCREEN;
        break;
      case FileSt.TYPE_ALL_FILES:
        icon = UI.ICON_LIST;
        break;
      case FileSt.TYPE_EXTERNAL_STORAGE:
        icon = UI.ICON_SD;
        break;
      case FileSt.TYPE_EXTERNAL_STORAGE_USB:
        icon = UI.ICON_USB;
        break;
      case FileSt.TYPE_FAVORITE:
        icon = UI.ICON_FAVORITE_ON;
        break;
      case FileSt.TYPE_ARTIST_ROOT:
        icon = UI.ICON_MIC;
        break;
      case FileSt.TYPE_ARTIST:
        icon = UI.ICON_MIC;
        newAlbumArt = null;
        if (UI.albumArt && albumArtFetcher != null) {
          if (file.albumArt != null || file.artistIdForAlbumArt != 0) {
            newAlbumArt = albumArtFetcher.getAlbumArt(file, usableHeight, requestId, this);
            pendingAlbumArtRequest = (newAlbumArt == null);
          }
        }
        albumArt = newAlbumArt;
        break;
      case FileSt.TYPE_ALBUM_ROOT:
        icon = UI.ICON_ALBUMART;
        break;
      case FileSt.TYPE_ALBUM:
      case FileSt.TYPE_ALBUM_ITEM:
        icon = UI.ICON_ALBUMART;
        newAlbumArt = null;
        if (UI.albumArt && albumArtFetcher != null && file.albumArt != null) {
          newAlbumArt = albumArtFetcher.getAlbumArt(file, usableHeight, requestId, this);
          pendingAlbumArtRequest = (newAlbumArt == null);
        }
        albumArt = newAlbumArt;
        break;
      default:
        icon = UI.ICON_FOLDER;
        break;
      }
    } else {
      icon = null;
    }
    if (albumArt != null) {
      bitmapLeftPadding = (usableHeight - albumArt.width) >> 1;
      leftPadding = usableHeight + UI._8dp;
    } else {
      bitmapLeftPadding = UI._8dp;
      leftPadding = ((icon != null) ? (UI._8dp + UI.defaultControlContentsSize + UI._8dp) : UI._8dp);
    }
    processEllipsis();
  }

  @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
  @Override
  public void setBackground(Drawable background) {
    super.setBackground(null);
  }
  
  @Override
  @Deprecated
  public void setBackgroundDrawable(Drawable background) {
    super.setBackgroundDrawable(null);
  }
  
  @Override
  public void setBackgroundResource(int resid) {
    super.setBackgroundResource(0);
  }
  
  @Override
  public void setBackgroundColor(int color) {
    super.setBackgroundResource(0);
  }
  
  @Override
  public Drawable getBackground() {
    return null;
  }
  
  @Override
  public void invalidateDrawable(Drawable drawable) {
  }
  
  @Override
  protected boolean verifyDrawable(Drawable drawable) {
    return false;
  }
  
  @Override
  @ExportedProperty(category = "drawing")
  public boolean isOpaque() {
    return false;//(state != 0);
  }
  
  @Override
  protected void drawableStateChanged() {
    super.drawableStateChanged();
    final boolean old = (state == 0);
    state = UI.handleStateChanges(state, isPressed(), isFocused(), this);
    if (buttonIsCheckbox && (state == 0) != old && btnPlay != null)
      //btnPlay.setTextColor((state != 0) ? UI.colorState_text_selected_static : (((file != null) && (file.specialType == FileSt.TYPE_ALBUM_ITEM)) ? UI.colorState_text_highlight_reactive : UI.colorState_text_listitem_reactive));
      btnPlay.setTextColor(((state != 0) || ((file != null) && (file.specialType == FileSt.TYPE_ALBUM_ITEM))) ? UI.colorState_text_selected_static : UI.colorState_text_listitem_reactive);
      //btnPlay.setTextColor((state != 0) ? UI.colorState_text_selected_static : (((file != null) && (file.specialType == FileSt.TYPE_ALBUM_ITEM)) ? UI.colorState_text_reactive : UI.colorState_text_listitem_reactive));
  }
  
  @Override
  protected int getSuggestedMinimumHeight() {
    return height;
  }
  
  @Override
  public int getMinimumHeight() {
    return height;
  }
  
  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    setMeasuredDimension(resolveSize(0, widthMeasureSpec), height);
  }
  
  @Override
  protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    if (width != w) {
      width = w;
      processEllipsis();
    }
  }
  
  //Android Custom Layout - onDraw() never gets called
  //http://stackoverflow.com/questions/13056331/android-custom-layout-ondraw-never-gets-called
  @Override
  protected void dispatchDraw(Canvas canvas) {
    getDrawingRect(UI.rect);
    final boolean albumItem = ((file != null) && (file.specialType == FileSt.TYPE_ALBUM_ITEM));
    if (albumItem && (state == 0))
      canvas.drawColor(UI.color_selected);
    final int st = state | ((state & UI.STATE_SELECTED & ((BgListView)getParent()).extraState) >>> 2);
    UI.drawBgBorderless(canvas, st, true);
    if (albumArt != null && albumArt.bitmap != null)
      canvas.drawBitmap(albumArt.bitmap, bitmapLeftPadding, (usableHeight >> 1) - (albumArt.height >> 1), null);
    else if (icon != null)
      TextIconDrawable.drawIcon(canvas, icon, bitmapLeftPadding, (usableHeight >> 1) - (UI.defaultControlContentsSize >> 1), UI.defaultControlContentsSize, ((st != 0) || albumItem) ? UI.color_text_selected : UI.color_text_listitem_secondary);
    UI.drawText(canvas, ellipsizedName, ((st != 0) || albumItem) ? UI.color_text_selected : UI.color_text_listitem, UI._22sp, leftPadding, (usableHeight >> 1) - (UI._22spBox >> 1) + UI._22spYinBox);
    super.dispatchDraw(canvas);
  }
  
  @Override
  protected void dispatchSetPressed(boolean pressed) {
  }
  
  @Override
  protected void onDetachedFromWindow() {
    albumArtFetcher = null;
    handler = null;
    if (albumArt != null) {
      albumArt.release();
      albumArt = null;
    }
    file = null;
    btnAdd = null;
    btnPlay = null;
    ellipsizedName = null;
    super.onDetachedFromWindow();
  }
  
  @Override
  public void onClick(View view) {
    if (hasButtons && (view == btnAdd || view == btnPlay)) {
      if (buttonIsCheckbox && file != null && view == btnPlay)
        file.isChecked = btnPlay.isChecked();
      if (UI.browserActivity != null)
        UI.browserActivity.processItemButtonClick(position, view == btnAdd);
    } else {
      if (UI.browserActivity != null)
        UI.browserActivity.processItemClick(position);
    }
  }
  
  @Override
  public boolean onLongClick(View view) {
    if (UI.browserActivity != null)
      UI.browserActivity.processItemLongClick(position);
    return true;
  }
  
  //Runs on a SECONDARY thread
  @Override
  public void albumArtFetched(ReleasableBitmapWrapper bitmap, int requestId) {
    //check if we have already been removed from the window
    final Handler h = handler;
    if (requestId != this.requestId || h == null)
      return;
    if (bitmap != null)
      bitmap.addRef();
    h.sendMessageAtTime(Message.obtain(h, requestId, bitmap), SystemClock.uptimeMillis());
  }
  
  //Runs on a SECONDARY thread
  @Override
  public FileSt fileForRequestId(int requestId) {
    return ((requestId == this.requestId) ? file : null);
  }
  
  //Runs on the MAIN thread
  @Override
  public boolean handleMessage(Message msg) {
    final ReleasableBitmapWrapper bitmap = (ReleasableBitmapWrapper)msg.obj;
    msg.obj = null;
    //check if we have already been removed from the window
    if (msg.what != requestId || albumArtFetcher == null || bitmap == null) {
      if (msg.what == requestId)
        pendingAlbumArtRequest = false;
      if (bitmap != null)
        bitmap.release();
      return true;
    }
    pendingAlbumArtRequest = false;
    if (albumArt != null)
      albumArt.release();
    albumArt = bitmap;
    bitmapLeftPadding = (usableHeight - bitmap.width) >> 1;
    leftPadding = usableHeight + UI._8dp;
    processEllipsis();
    invalidate();
    return true;
  }
}
Java Source Code List
