DF1E
8 years ago
14 changed files with 667 additions and 0 deletions
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/* |
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* Copyright 2014 A.C.R. Development |
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*/ |
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package acr.browser.lightning.constant; |
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import android.app.Application; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.Nullable; |
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import com.anthonycr.bonsai.Single; |
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import com.anthonycr.bonsai.SingleAction; |
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import com.anthonycr.bonsai.SingleOnSubscribe; |
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import com.anthonycr.bonsai.SingleSubscriber; |
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import java.io.File; |
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import java.io.FileWriter; |
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import java.io.IOException; |
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import java.util.List; |
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import javax.inject.Inject; |
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import acr.browser.lightning.R; |
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import acr.browser.lightning.app.BrowserApp; |
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import acr.browser.lightning.database.downloads.DownloadItem; |
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import acr.browser.lightning.database.downloads.DownloadsModel; |
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import acr.browser.lightning.utils.Preconditions; |
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import acr.browser.lightning.utils.Utils; |
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public final class DownloadsPage { |
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/** |
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* The download page standard suffix |
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*/ |
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public static final String FILENAME = "downloads.html"; |
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private static final String HEADING_1 = "<!DOCTYPE html><html xmlns=http://www.w3.org/1999/xhtml>\n" + |
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"<head>\n" + |
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"<meta content=en-us http-equiv=Content-Language />\n" + |
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"<meta content='text/html; charset=utf-8' http-equiv=Content-Type />\n" + |
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"<meta name=viewport content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no'>\n" + |
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"<title>"; |
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private static final String HEADING_2 = "</title>\n" + |
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"</head>\n" + |
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"<style>body{background:#f5f5f5;max-width:100%;min-height:100%}#content{width:100%;max-width:800px;margin:0 auto;text-align:center}.box{vertical-align:middle;text-align:center;position:relative;display:inline-block;height:45px;width:80%;margin:10px;background-color:#fff;box-shadow:0 3px 6px rgba(0,0,0,0.25);font-family:Arial;color:#444;font-size:12px;-moz-border-radius:2px;-webkit-border-radius:2px;border-radius:2px}.box-content{height:25px;width:100%;vertical-align:middle;text-align:center}p.ellipses{" + |
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"width:100%;font-size: small;font-family: Arial, Helvetica, 'sans-serif';white-space:nowrap;overflow:hidden;text-align:left;vertical-align:middle;margin:auto;text-overflow:ellipsis;-o-text-overflow:ellipsis;-ms-text-overflow:ellipsis}.box a{width:100%;height:100%;position:absolute;left:0;top:0}img{vertical-align:middle;margin-right:10px;width:20px;height:20px;}.margin{margin:10px}</style>\n" + |
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"<body><div id=content>"; |
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private static final String PART1 = "<div class=box><a href='"; |
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private static final String PART2 = "'></a>\n" + |
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"<div class=margin>\n" + |
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"<div class=box-content>\n" + |
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"<p class=ellipses><b>"; |
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private static final String PART3 = "</b></p>\n<p class=ellipses>"; |
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private static final String PART4 = "</p></div></div></div>"; |
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private static final String END = "</div></body></html>"; |
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private File mFilesDir; |
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@Inject Application mApp; |
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@Inject DownloadsModel mManager; |
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@NonNull private final String mTitle; |
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public DownloadsPage() { |
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BrowserApp.getAppComponent().inject(this); |
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mTitle = mApp.getString(R.string.action_downloads); |
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} |
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@NonNull |
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public Single<String> getDownloadsPage() { |
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return Single.create(new SingleAction<String>() { |
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@Override |
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public void onSubscribe(@NonNull SingleSubscriber<String> subscriber) { |
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mFilesDir = mApp.getFilesDir(); |
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buildDownloadsPage(null); |
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File downloadsWebPage = new File(mFilesDir, FILENAME); |
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subscriber.onItem(Constants.FILE + downloadsWebPage); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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private void buildDownloadsPage(@Nullable final String folder) { |
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mManager.getAllDownloads() |
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.subscribe(new SingleOnSubscribe<List<DownloadItem>>() { |
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@Override |
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public void onItem(@Nullable List<DownloadItem> list) { |
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Preconditions.checkNonNull(list); |
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final File downloadsWebPage; |
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if (folder == null || folder.isEmpty()) { |
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downloadsWebPage = new File(mFilesDir, FILENAME); |
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} else { |
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downloadsWebPage = new File(mFilesDir, folder + '-' + FILENAME); |
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} |
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final StringBuilder downloadsBuilder = new StringBuilder(HEADING_1 + mTitle + HEADING_2); |
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for (int n = 0, size = list.size(); n < size; n++) { |
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final DownloadItem item = list.get(n); |
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downloadsBuilder.append(PART1); |
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downloadsBuilder.append(item.getUrl()); |
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downloadsBuilder.append(PART2); |
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downloadsBuilder.append(item.getTitle()); |
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downloadsBuilder.append(PART3); |
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downloadsBuilder.append(item.getContentSize()); |
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downloadsBuilder.append(PART4); |
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} |
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downloadsBuilder.append(END); |
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FileWriter bookWriter = null; |
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try { |
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//noinspection IOResourceOpenedButNotSafelyClosed
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bookWriter = new FileWriter(downloadsWebPage, false); |
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bookWriter.write(downloadsBuilder.toString()); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} finally { |
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Utils.close(bookWriter); |
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} |
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} |
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}); |
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} |
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} |
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/* |
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* Copyright 2014 A.C.R. Development |
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*/ |
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package acr.browser.lightning.database.downloads; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.Nullable; |
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import acr.browser.lightning.utils.Preconditions; |
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public class DownloadItem implements Comparable<DownloadItem> { |
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// private variables
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@NonNull |
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private String mUrl = ""; |
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@NonNull |
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private String mTitle = ""; |
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@NonNull |
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private String mContentSize = ""; |
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public DownloadItem() {} |
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public DownloadItem(@NonNull String url, @NonNull String title, @NonNull String size) { |
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Preconditions.checkNonNull(url); |
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Preconditions.checkNonNull(title); |
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this.mUrl = url; |
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this.mTitle = title; |
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this.mContentSize = size; |
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} |
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@NonNull |
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public String getUrl() { |
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return this.mUrl; |
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} |
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public void setUrl(@Nullable String url) { |
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this.mUrl = (url == null) ? "" : url; |
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} |
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@NonNull |
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public String getTitle() { |
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return this.mTitle; |
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} |
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public void setTitle(@Nullable String title) { |
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this.mTitle = (title == null) ? "" : title; |
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} |
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@NonNull |
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public String getContentSize() { |
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return this.mContentSize; |
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} |
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public void setContentSize(@Nullable String size) { |
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this.mContentSize = (size == null) ? "" : size; |
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} |
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@NonNull |
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@Override |
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public String toString() { |
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return mTitle; |
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} |
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@Override |
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public int compareTo(@NonNull DownloadItem another) { |
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int compare = this.mTitle.compareTo(another.mTitle); |
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if (compare == 0) { |
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return this.mUrl.compareTo(another.mUrl); |
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} |
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return compare; |
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} |
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@Override |
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public boolean equals(@Nullable Object object) { |
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if (this == object) return true; |
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if (object == null) return false; |
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if (!(object instanceof DownloadItem)) return false; |
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DownloadItem that = (DownloadItem) object; |
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return this.mTitle.equals(that.mTitle) && this.mUrl.equals(that.mUrl) |
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&& this.mContentSize.equals(that.mContentSize); |
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} |
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@Override |
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public int hashCode() { |
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int result = mUrl.hashCode(); |
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result = 31 * result + mTitle.hashCode(); |
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return result; |
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} |
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} |
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package acr.browser.lightning.database.downloads; |
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import android.app.Application; |
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import android.content.ContentValues; |
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import android.database.Cursor; |
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import android.database.DatabaseUtils; |
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import android.database.sqlite.SQLiteDatabase; |
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import android.database.sqlite.SQLiteOpenHelper; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.Nullable; |
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import android.support.annotation.WorkerThread; |
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import com.anthonycr.bonsai.Completable; |
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import com.anthonycr.bonsai.CompletableAction; |
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import com.anthonycr.bonsai.CompletableSubscriber; |
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import com.anthonycr.bonsai.Single; |
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import com.anthonycr.bonsai.SingleAction; |
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import com.anthonycr.bonsai.SingleSubscriber; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.inject.Inject; |
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import javax.inject.Singleton; |
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import acr.browser.lightning.R; |
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/** |
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* The disk backed download database. |
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* See {@link DownloadsModel} for method |
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* documentation. |
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*/ |
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@Singleton |
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public class DownloadsDatabase extends SQLiteOpenHelper implements DownloadsModel { |
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private static final String TAG = "DownloadsDatabase"; |
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// Database Version
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private static final int DATABASE_VERSION = 1; |
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// Database Name
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private static final String DATABASE_NAME = "downloadManager"; |
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// HistoryItems table name
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private static final String TABLE_DOWNLOADS = "download"; |
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// HistoryItems Table Columns names
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private static final String KEY_ID = "id"; |
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private static final String KEY_URL = "url"; |
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private static final String KEY_TITLE = "title"; |
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private static final String KEY_SIZE = "size"; |
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@NonNull private final String DEFAULT_DOWNLOADS_TITLE; |
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@Nullable private SQLiteDatabase mDatabase; |
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@Inject |
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public DownloadsDatabase(@NonNull Application application) { |
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super(application, DATABASE_NAME, null, DATABASE_VERSION); |
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DEFAULT_DOWNLOADS_TITLE = application.getString(R.string.untitled); |
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} |
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/** |
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* Lazily initializes the database |
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* field when called. |
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* |
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* @return a non null writable database. |
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*/ |
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@WorkerThread |
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@NonNull |
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private SQLiteDatabase lazyDatabase() { |
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if (mDatabase == null || !mDatabase.isOpen()) { |
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mDatabase = getWritableDatabase(); |
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} |
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return mDatabase; |
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} |
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// Creating Tables
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@Override |
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public void onCreate(@NonNull SQLiteDatabase db) { |
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String CREATE_BOOKMARK_TABLE = "CREATE TABLE " + |
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DatabaseUtils.sqlEscapeString(TABLE_DOWNLOADS) + '(' + |
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DatabaseUtils.sqlEscapeString(KEY_ID) + " INTEGER PRIMARY KEY," + |
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DatabaseUtils.sqlEscapeString(KEY_URL) + " TEXT," + |
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DatabaseUtils.sqlEscapeString(KEY_TITLE) + " TEXT," + |
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DatabaseUtils.sqlEscapeString(KEY_SIZE) + " TEXT" + ')'; |
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db.execSQL(CREATE_BOOKMARK_TABLE); |
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} |
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// Upgrading database
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@Override |
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public void onUpgrade(@NonNull SQLiteDatabase db, int oldVersion, int newVersion) { |
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// Drop older table if it exists
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db.execSQL("DROP TABLE IF EXISTS " + DatabaseUtils.sqlEscapeString(TABLE_DOWNLOADS)); |
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// Create tables again
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onCreate(db); |
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} |
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@NonNull |
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private static ContentValues bindBookmarkToContentValues(@NonNull DownloadItem downloadItem) { |
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ContentValues contentValues = new ContentValues(3); |
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contentValues.put(KEY_TITLE, downloadItem.getTitle()); |
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contentValues.put(KEY_URL, downloadItem.getUrl()); |
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contentValues.put(KEY_SIZE, downloadItem.getContentSize()); |
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return contentValues; |
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} |
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@NonNull |
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private static DownloadItem bindCursorToDownloadItem(@NonNull Cursor cursor) { |
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DownloadItem download = new DownloadItem(); |
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download.setUrl(cursor.getString(cursor.getColumnIndex(KEY_URL))); |
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download.setTitle(cursor.getString(cursor.getColumnIndex(KEY_TITLE))); |
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download.setContentSize(cursor.getString(cursor.getColumnIndex(KEY_SIZE))); |
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return download; |
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} |
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@NonNull |
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private static List<DownloadItem> bindCursorToDownloadItemList(@NonNull Cursor cursor) { |
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List<DownloadItem> downloads = new ArrayList<>(); |
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while (cursor.moveToNext()) { |
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downloads.add(bindCursorToDownloadItem(cursor)); |
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} |
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cursor.close(); |
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return downloads; |
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} |
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@NonNull |
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@Override |
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public Single<DownloadItem> findDownloadForUrl(@NonNull final String url) { |
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return Single.create(new SingleAction<DownloadItem>() { |
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@Override |
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public void onSubscribe(@NonNull SingleSubscriber<DownloadItem> subscriber) { |
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Cursor cursor = lazyDatabase().query(TABLE_DOWNLOADS, null, KEY_URL + "=?", new String[]{url}, null, null, "1"); |
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if (cursor.moveToFirst()) { |
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subscriber.onItem(bindCursorToDownloadItem(cursor)); |
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} else { |
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subscriber.onItem(null); |
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} |
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cursor.close(); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@NonNull |
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@Override |
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public Single<Boolean> isDownload(@NonNull final String url) { |
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return Single.create(new SingleAction<Boolean>() { |
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@Override |
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public void onSubscribe(@NonNull SingleSubscriber<Boolean> subscriber) { |
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Cursor cursor = lazyDatabase().query(TABLE_DOWNLOADS, null, KEY_URL + "=?", new String[]{url}, null, null, null, "1"); |
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subscriber.onItem(cursor.moveToFirst()); |
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cursor.close(); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@NonNull |
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@Override |
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public Single<Boolean> addDownloadIfNotExists(@NonNull final DownloadItem item) { |
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return Single.create(new SingleAction<Boolean>() { |
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@Override |
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public void onSubscribe(@NonNull SingleSubscriber<Boolean> subscriber) { |
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Cursor cursor = lazyDatabase().query(TABLE_DOWNLOADS, null, KEY_URL + "=?", new String[]{item.getUrl()}, null, null, "1"); |
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if (cursor.moveToFirst()) { |
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cursor.close(); |
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subscriber.onItem(false); |
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subscriber.onComplete(); |
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return; |
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} |
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cursor.close(); |
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long id = lazyDatabase().insert(TABLE_DOWNLOADS, null, bindBookmarkToContentValues(item)); |
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subscriber.onItem(id != -1); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@NonNull |
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@Override |
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public Completable addDownloadsList(@NonNull final List<DownloadItem> bookmarkItems) { |
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return Completable.create(new CompletableAction() { |
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@Override |
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public void onSubscribe(@NonNull CompletableSubscriber subscriber) { |
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lazyDatabase().beginTransaction(); |
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for (DownloadItem item : bookmarkItems) { |
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addDownloadIfNotExists(item).subscribe(); |
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} |
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lazyDatabase().setTransactionSuccessful(); |
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lazyDatabase().endTransaction(); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@NonNull |
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@Override |
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public Single<Boolean> deleteDownload(@NonNull final DownloadItem bookmark) { |
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return Single.create(new SingleAction<Boolean>() { |
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@Override |
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public void onSubscribe(@NonNull SingleSubscriber<Boolean> subscriber) { |
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int rows = lazyDatabase().delete(TABLE_DOWNLOADS, KEY_URL + "=?", new String[]{bookmark.getUrl()}); |
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subscriber.onItem(rows > 0); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@NonNull |
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@Override |
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public Completable deleteAllDownloads() { |
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return Completable.create(new CompletableAction() { |
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@Override |
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public void onSubscribe(@NonNull CompletableSubscriber subscriber) { |
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lazyDatabase().delete(TABLE_DOWNLOADS, null, null); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@NonNull |
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@Override |
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public Single<List<DownloadItem>> getAllDownloads() { |
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return Single.create(new SingleAction<List<DownloadItem>>() { |
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@Override |
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public void onSubscribe(@NonNull SingleSubscriber<List<DownloadItem>> subscriber) { |
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Cursor cursor = lazyDatabase().query(TABLE_DOWNLOADS, null, null, null, null, null, null); |
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subscriber.onItem(bindCursorToDownloadItemList(cursor)); |
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subscriber.onComplete(); |
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} |
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}); |
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} |
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@Override |
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public long count() { |
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return DatabaseUtils.queryNumEntries(lazyDatabase(), TABLE_DOWNLOADS); |
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} |
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} |
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@@ -0,0 +1,97 @@
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package acr.browser.lightning.database.downloads; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.WorkerThread; |
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import com.anthonycr.bonsai.Completable; |
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import com.anthonycr.bonsai.Single; |
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import java.util.List; |
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/** |
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* The interface that should be used to |
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* communicate with the download database. |
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* <p> |
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* Created by anthonycr on 5/6/17. |
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*/ |
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public interface DownloadsModel { |
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/** |
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* Determines if a URL is associated with a download. |
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* |
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* @param url the URL to check. |
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* @return an observable that will emit true if |
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* the URL is a download, false otherwise. |
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*/ |
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@NonNull |
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Single<Boolean> isDownload(@NonNull String url); |
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/** |
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* Gets the download associated with the URL. |
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* |
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* @param url the URL to look for. |
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* @return an observable that will emit either |
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* the download associated with the URL or null. |
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*/ |
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@NonNull |
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Single<DownloadItem> findDownloadForUrl(@NonNull String url); |
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/** |
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* Adds a download if one does not already exist with |
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* the same URL. |
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* |
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* @param item the download to add. |
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* @return an observable that emits true if the download |
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* was added, false otherwise. |
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*/ |
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@NonNull |
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Single<Boolean> addDownloadIfNotExists(@NonNull DownloadItem item); |
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/** |
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* Adds a list of downloads to the database. |
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* |
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* @param downloadItems the downloads to add. |
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* @return an observable that emits a complete event |
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* when all the downloads have been added. |
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*/ |
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@NonNull |
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Completable addDownloadsList(@NonNull List<DownloadItem> downloadItems); |
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/** |
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* Deletes a download from the database. |
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* |
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* @param download the download to delete. |
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* @return an observable that emits true when |
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* the download is deleted, false otherwise. |
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*/ |
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@NonNull |
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Single<Boolean> deleteDownload(@NonNull DownloadItem download); |
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/** |
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* Deletes all downloads in the database. |
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* |
||||
* @return an observable that emits a completion |
||||
* event when all downloads have been deleted. |
||||
*/ |
||||
@NonNull |
||||
Completable deleteAllDownloads(); |
||||
|
||||
/** |
||||
* Emits a list of all downloads |
||||
* |
||||
* @return an observable that emits a list |
||||
* of all downloads. |
||||
*/ |
||||
@NonNull |
||||
Single<List<DownloadItem>> getAllDownloads(); |
||||
|
||||
/** |
||||
* A synchronous call to the model |
||||
* that returns the number of downloads. |
||||
* Should be called from a background thread. |
||||
* |
||||
* @return the number of downloads in the database. |
||||
*/ |
||||
@WorkerThread |
||||
long count(); |
||||
} |
||||
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Reference in new issue