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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "DownloadUtils",
+ "resource://gre/modules/DownloadUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "DownloadsCommon",
+ "resource:///modules/DownloadsCommon.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "DownloadsViewUI",
+ "resource:///modules/DownloadsViewUI.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "FileUtils",
+ "resource://gre/modules/FileUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "NetUtil",
+ "resource://gre/modules/NetUtil.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "OS",
+ "resource://gre/modules/osfile.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
+ "resource://gre/modules/PlacesUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Promise",
+ "resource://gre/modules/Promise.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
+ "resource:///modules/RecentWindow.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Services",
+ "resource://gre/modules/Services.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Task",
+ "resource://gre/modules/Task.jsm");
+
+const nsIDM = Ci.nsIDownloadManager;
+
+const DESTINATION_FILE_URI_ANNO = "downloads/destinationFileURI";
+const DOWNLOAD_META_DATA_ANNO = "downloads/metaData";
+
+/**
+ * Represents a download from the browser history. It implements part of the
+ * interface of the Download object.
+ *
+ * @param aPlacesNode
+ * The Places node from which the history download should be initialized.
+ */
+function HistoryDownload(aPlacesNode) {
+ // TODO (bug 829201): history downloads should get the referrer from Places.
+ this.source = {
+ url: aPlacesNode.uri,
+ };
+ this.target = {
+ path: undefined,
+ exists: false,
+ size: undefined,
+ };
+
+ // In case this download cannot obtain its end time from the Places metadata,
+ // use the time from the Places node, that is the start time of the download.
+ this.endTime = aPlacesNode.time / 1000;
+}
+
+HistoryDownload.prototype = {
+ /**
+ * Pushes information from Places metadata into this object.
+ */
+ updateFromMetaData(metaData) {
+ try {
+ this.target.path = Cc["@mozilla.org/network/protocol;1?name=file"]
+ .getService(Ci.nsIFileProtocolHandler)
+ .getFileFromURLSpec(metaData.targetFileSpec).path;
+ } catch (ex) {
+ this.target.path = undefined;
+ }
+
+ if ("state" in metaData) {
+ this.succeeded = metaData.state == nsIDM.DOWNLOAD_FINISHED;
+ this.canceled = metaData.state == nsIDM.DOWNLOAD_CANCELED ||
+ metaData.state == nsIDM.DOWNLOAD_PAUSED;
+ this.endTime = metaData.endTime;
+
+ // Recreate partial error information from the state saved in history.
+ if (metaData.state == nsIDM.DOWNLOAD_FAILED) {
+ this.error = { message: "History download failed." };
+ } else if (metaData.state == nsIDM.DOWNLOAD_BLOCKED_PARENTAL) {
+ this.error = { becauseBlockedByParentalControls: true };
+ } else if (metaData.state == nsIDM.DOWNLOAD_DIRTY) {
+ this.error = {
+ becauseBlockedByReputationCheck: true,
+ reputationCheckVerdict: metaData.reputationCheckVerdict || "",
+ };
+ } else {
+ this.error = null;
+ }
+
+ // Normal history downloads are assumed to exist until the user interface
+ // is refreshed, at which point these values may be updated.
+ this.target.exists = true;
+ this.target.size = metaData.fileSize;
+ } else {
+ // Metadata might be missing from a download that has started but hasn't
+ // stopped already. Normally, this state is overridden with the one from
+ // the corresponding in-progress session download. But if the browser is
+ // terminated abruptly and additionally the file with information about
+ // in-progress downloads is lost, we may end up using this state. We use
+ // the failed state to allow the download to be restarted.
+ //
+ // On the other hand, if the download is missing the target file
+ // annotation as well, it is just a very old one, and we can assume it
+ // succeeded.
+ this.succeeded = !this.target.path;
+ this.error = this.target.path ? { message: "Unstarted download." } : null;
+ this.canceled = false;
+
+ // These properties may be updated if the user interface is refreshed.
+ this.target.exists = false;
+ this.target.size = undefined;
+ }
+ },
+
+ /**
+ * History downloads are never in progress.
+ */
+ stopped: true,
+
+ /**
+ * No percentage indication is shown for history downloads.
+ */
+ hasProgress: false,
+
+ /**
+ * History downloads cannot be restarted using their partial data, even if
+ * they are indicated as paused in their Places metadata. The only way is to
+ * use the information from a persisted session download, that will be shown
+ * instead of the history download. In case this session download is not
+ * available, we show the history download as canceled, not paused.
+ */
+ hasPartialData: false,
+
+ /**
+ * This method mimicks the "start" method of session downloads, and is called
+ * when the user retries a history download.
+ *
+ * At present, we always ask the user for a new target path when retrying a
+ * history download. In the future we may consider reusing the known target
+ * path if the folder still exists and the file name is not already used,
+ * except when the user preferences indicate that the target path should be
+ * requested every time a new download is started.
+ */
+ start() {
+ let browserWin = RecentWindow.getMostRecentBrowserWindow();
+ let initiatingDoc = browserWin ? browserWin.document : document;
+
+ // Do not suggest a file name if we don't know the original target.
+ let leafName = this.target.path ? OS.Path.basename(this.target.path) : null;
+ DownloadURL(this.source.url, leafName, initiatingDoc);
+
+ return Promise.resolve();
+ },
+
+ /**
+ * This method mimicks the "refresh" method of session downloads, except that
+ * it cannot notify that the data changed to the Downloads View.
+ */
+ refresh: Task.async(function* () {
+ try {
+ this.target.size = (yield OS.File.stat(this.target.path)).size;
+ this.target.exists = true;
+ } catch (ex) {
+ // We keep the known file size from the metadata, if any.
+ this.target.exists = false;
+ }
+ }),
+};
+
+/**
+ * A download element shell is responsible for handling the commands and the
+ * displayed data for a single download view element.
+ *
+ * The shell may contain a session download, a history download, or both. When
+ * both a history and a session download are present, the session download gets
+ * priority and its information is displayed.
+ *
+ * On construction, a new richlistitem is created, and can be accessed through
+ * the |element| getter. The shell doesn't insert the item in a richlistbox, the
+ * caller must do it and remove the element when it's no longer needed.
+ *
+ * The caller is also responsible for forwarding status notifications for
+ * session downloads, calling the onStateChanged and onChanged methods.
+ *
+ * @param [optional] aSessionDownload
+ * The session download, required if aHistoryDownload is not set.
+ * @param [optional] aHistoryDownload
+ * The history download, required if aSessionDownload is not set.
+ */
+function HistoryDownloadElementShell(aSessionDownload, aHistoryDownload) {
+ this.element = document.createElement("richlistitem");
+ this.element._shell = this;
+
+ this.element.classList.add("download");
+ this.element.classList.add("download-state");
+
+ if (aSessionDownload) {
+ this.sessionDownload = aSessionDownload;
+ }
+ if (aHistoryDownload) {
+ this.historyDownload = aHistoryDownload;
+ }
+}
+
+HistoryDownloadElementShell.prototype = {
+ __proto__: DownloadsViewUI.DownloadElementShell.prototype,
+
+ /**
+ * Manages the "active" state of the shell. By default all the shells without
+ * a session download are inactive, thus their UI is not updated. They must
+ * be activated when entering the visible area. Session downloads are always
+ * active.
+ */
+ ensureActive() {
+ if (!this._active) {
+ this._active = true;
+ this.element.setAttribute("active", true);
+ this._updateUI();
+ }
+ },
+ get active() {
+ return !!this._active;
+ },
+
+ /**
+ * Overrides the base getter to return the Download or HistoryDownload object
+ * for displaying information and executing commands in the user interface.
+ */
+ get download() {
+ return this._sessionDownload || this._historyDownload;
+ },
+
+ _sessionDownload: null,
+ get sessionDownload() {
+ return this._sessionDownload;
+ },
+ set sessionDownload(aValue) {
+ if (this._sessionDownload != aValue) {
+ if (!aValue && !this._historyDownload) {
+ throw new Error("Should always have either a Download or a HistoryDownload");
+ }
+
+ this._sessionDownload = aValue;
+
+ this.ensureActive();
+ this._updateUI();
+ }
+ return aValue;
+ },
+
+ _historyDownload: null,
+ get historyDownload() {
+ return this._historyDownload;
+ },
+ set historyDownload(aValue) {
+ if (this._historyDownload != aValue) {
+ if (!aValue && !this._sessionDownload) {
+ throw new Error("Should always have either a Download or a HistoryDownload");
+ }
+
+ this._historyDownload = aValue;
+
+ // We don't need to update the UI if we had a session data item, because
+ // the places information isn't used in this case.
+ if (!this._sessionDownload) {
+ this._updateUI();
+ }
+ }
+ return aValue;
+ },
+
+ _updateUI() {
+ // There is nothing to do if the item has always been invisible.
+ if (!this.active) {
+ return;
+ }
+
+ // Since the state changed, we may need to check the target file again.
+ this._targetFileChecked = false;
+
+ this._updateState();
+ },
+
+ get statusTextAndTip() {
+ let status = this.rawStatusTextAndTip;
+
+ // The base object would show extended progress information in the tooltip,
+ // but we move this to the main view and never display a tooltip.
+ if (!this.download.stopped) {
+ status.text = status.tip;
+ }
+ status.tip = "";
+
+ return status;
+ },
+
+ onStateChanged() {
+ this._updateState();
+
+ if (this.element.selected) {
+ goUpdateDownloadCommands();
+ } else {
+ // If a state change occurs in an item that is not currently selected,
+ // this is the only command that may be affected.
+ goUpdateCommand("downloadsCmd_clearDownloads");
+ }
+ },
+
+ onChanged() {
+ // This cannot be placed within onStateChanged because
+ // when a download goes from hasBlockedData to !hasBlockedData
+ // it will still remain in the same state.
+ this.element.classList.toggle("temporary-block",
+ !!this.download.hasBlockedData);
+ this._updateProgress();
+ },
+
+ isCommandEnabled(aCommand) {
+ // The only valid command for inactive elements is cmd_delete.
+ if (!this.active && aCommand != "cmd_delete") {
+ return false;
+ }
+ switch (aCommand) {
+ case "downloadsCmd_open":
+ // This property is false if the download did not succeed.
+ return this.download.target.exists;
+ case "downloadsCmd_show":
+ // TODO: Bug 827010 - Handle part-file asynchronously.
+ if (this._sessionDownload && this.download.target.partFilePath) {
+ let partFile = new FileUtils.File(this.download.target.partFilePath);
+ if (partFile.exists()) {
+ return true;
+ }
+ }
+
+ // This property is false if the download did not succeed.
+ return this.download.target.exists;
+ case "cmd_delete":
+ // We don't want in-progress downloads to be removed accidentally.
+ return this.download.stopped;
+ case "downloadsCmd_cancel":
+ return !!this._sessionDownload;
+ }
+ return DownloadsViewUI.DownloadElementShell.prototype
+ .isCommandEnabled.call(this, aCommand);
+ },
+
+ doCommand(aCommand) {
+ if (DownloadsViewUI.isCommandName(aCommand)) {
+ this[aCommand]();
+ }
+ },
+
+ downloadsCmd_open() {
+ let file = new FileUtils.File(this.download.target.path);
+ DownloadsCommon.openDownloadedFile(file, null, window);
+ },
+
+ downloadsCmd_show() {
+ let file = new FileUtils.File(this.download.target.path);
+ DownloadsCommon.showDownloadedFile(file);
+ },
+
+ downloadsCmd_openReferrer() {
+ openURL(this.download.source.referrer);
+ },
+
+ cmd_delete() {
+ if (this._sessionDownload) {
+ DownloadsCommon.removeAndFinalizeDownload(this.download);
+ }
+ if (this._historyDownload) {
+ let uri = NetUtil.newURI(this.download.source.url);
+ PlacesUtils.bhistory.removePage(uri);
+ }
+ },
+
+ downloadsCmd_unblock() {
+ this.confirmUnblock(window, "unblock");
+ },
+
+ downloadsCmd_chooseUnblock() {
+ this.confirmUnblock(window, "chooseUnblock");
+ },
+
+ downloadsCmd_chooseOpen() {
+ this.confirmUnblock(window, "chooseOpen");
+ },
+
+ // Returns whether or not the download handled by this shell should
+ // show up in the search results for the given term. Both the display
+ // name for the download and the url are searched.
+ matchesSearchTerm(aTerm) {
+ if (!aTerm) {
+ return true;
+ }
+ aTerm = aTerm.toLowerCase();
+ return this.displayName.toLowerCase().includes(aTerm) ||
+ this.download.source.url.toLowerCase().includes(aTerm);
+ },
+
+ // Handles return keypress on the element (the keypress listener is
+ // set in the DownloadsPlacesView object).
+ doDefaultCommand() {
+ let command = this.currentDefaultCommandName;
+ if (command && this.isCommandEnabled(command)) {
+ this.doCommand(command);
+ }
+ },
+
+ /**
+ * This method is called by the outer download view, after the controller
+ * commands have already been updated. In case we did not check for the
+ * existence of the target file already, we can do it now and then update
+ * the commands as needed.
+ */
+ onSelect() {
+ if (!this.active) {
+ return;
+ }
+
+ // If this is a history download for which no target file information is
+ // available, we cannot retrieve information about the target file.
+ if (!this.download.target.path) {
+ return;
+ }
+
+ // Start checking for existence. This may be done twice if onSelect is
+ // called again before the information is collected.
+ if (!this._targetFileChecked) {
+ this._checkTargetFileOnSelect().catch(Cu.reportError);
+ }
+ },
+
+ _checkTargetFileOnSelect: Task.async(function* () {
+ try {
+ yield this.download.refresh();
+ } finally {
+ // Do not try to check for existence again if this failed once.
+ this._targetFileChecked = true;
+ }
+
+ // Update the commands only if the element is still selected.
+ if (this.element.selected) {
+ goUpdateDownloadCommands();
+ }
+
+ // Ensure the interface has been updated based on the new values. We need to
+ // do this because history downloads can't trigger update notifications.
+ this._updateProgress();
+ }),
+};
+
+/**
+ * Relays commands from the download.xml binding to the selected items.
+ */
+const DownloadsView = {
+ onDownloadCommand(event, command) {
+ goDoCommand(command);
+ },
+
+ onDownloadClick() {},
+};
+
+/**
+ * A Downloads Places View is a places view designed to show a places query
+ * for history downloads alongside the session downloads.
+ *
+ * As we don't use the places controller, some methods implemented by other
+ * places views are not implemented by this view.
+ *
+ * A richlistitem in this view can represent either a past download or a session
+ * download, or both. Session downloads are shown first in the view, and as long
+ * as they exist they "collapses" their history "counterpart" (So we don't show two
+ * items for every download).
+ */
+function DownloadsPlacesView(aRichListBox, aActive = true) {
+ this._richlistbox = aRichListBox;
+ this._richlistbox._placesView = this;
+ window.controllers.insertControllerAt(0, this);
+
+ // Map download URLs to download element shells regardless of their type
+ this._downloadElementsShellsForURI = new Map();
+
+ // Map download data items to their element shells.
+ this._viewItemsForDownloads = new WeakMap();
+
+ // Points to the last session download element. We keep track of this
+ // in order to keep all session downloads above past downloads.
+ this._lastSessionDownloadElement = null;
+
+ this._searchTerm = "";
+
+ this._active = aActive;
+
+ // Register as a downloads view. The places data will be initialized by
+ // the places setter.
+ this._initiallySelectedElement = null;
+ this._downloadsData = DownloadsCommon.getData(window.opener || window);
+ this._downloadsData.addView(this);
+
+ // Get the Download button out of the attention state since we're about to
+ // view all downloads.
+ DownloadsCommon.getIndicatorData(window).attention = DownloadsCommon.ATTENTION_NONE;
+
+ // Make sure to unregister the view if the window is closed.
+ window.addEventListener("unload", () => {
+ window.controllers.removeController(this);
+ this._downloadsData.removeView(this);
+ this.result = null;
+ }, true);
+ // Resizing the window may change items visibility.
+ window.addEventListener("resize", () => {
+ this._ensureVisibleElementsAreActive();
+ }, true);
+}
+
+DownloadsPlacesView.prototype = {
+ get associatedElement() {
+ return this._richlistbox;
+ },
+
+ get active() {
+ return this._active;
+ },
+ set active(val) {
+ this._active = val;
+ if (this._active)
+ this._ensureVisibleElementsAreActive();
+ return this._active;
+ },
+
+ /**
+ * This cache exists in order to optimize the load of the Downloads View, when
+ * Places annotations for history downloads must be read. In fact, annotations
+ * are stored in a single table, and reading all of them at once is much more
+ * efficient than an individual query.
+ *
+ * When this property is first requested, it reads the annotations for all the
+ * history downloads and stores them indefinitely.
+ *
+ * The historical annotations are not expected to change for the duration of
+ * the session, except in the case where a session download is running for the
+ * same URI as a history download. To ensure we don't use stale data, URIs
+ * corresponding to session downloads are permanently removed from the cache.
+ * This is a very small mumber compared to history downloads.
+ *
+ * This property returns a Map from each download source URI found in Places
+ * annotations to an object with the format:
+ *
+ * { targetFileSpec, state, endTime, fileSize, ... }
+ *
+ * The targetFileSpec property is the value of "downloads/destinationFileURI",
+ * while the other properties are taken from "downloads/metaData". Any of the
+ * properties may be missing from the object.
+ */
+ get _cachedPlacesMetaData() {
+ if (!this.__cachedPlacesMetaData) {
+ this.__cachedPlacesMetaData = new Map();
+
+ // Read the metadata annotations first, but ignore invalid JSON.
+ for (let result of PlacesUtils.annotations.getAnnotationsWithName(
+ DOWNLOAD_META_DATA_ANNO)) {
+ try {
+ this.__cachedPlacesMetaData.set(result.uri.spec,
+ JSON.parse(result.annotationValue));
+ } catch (ex) {}
+ }
+
+ // Add the target file annotations to the metadata.
+ for (let result of PlacesUtils.annotations.getAnnotationsWithName(
+ DESTINATION_FILE_URI_ANNO)) {
+ let metaData = this.__cachedPlacesMetaData.get(result.uri.spec);
+ if (!metaData) {
+ metaData = {};
+ this.__cachedPlacesMetaData.set(result.uri.spec, metaData);
+ }
+ metaData.targetFileSpec = result.annotationValue;
+ }
+ }
+
+ return this.__cachedPlacesMetaData;
+ },
+ __cachedPlacesMetaData: null,
+
+ /**
+ * Reads current metadata from Places annotations for the specified URI, and
+ * returns an object with the format:
+ *
+ * { targetFileSpec, state, endTime, fileSize, ... }
+ *
+ * The targetFileSpec property is the value of "downloads/destinationFileURI",
+ * while the other properties are taken from "downloads/metaData". Any of the
+ * properties may be missing from the object.
+ */
+ _getPlacesMetaDataFor(spec) {
+ let metaData = {};
+
+ try {
+ let uri = NetUtil.newURI(spec);
+ try {
+ metaData = JSON.parse(PlacesUtils.annotations.getPageAnnotation(
+ uri, DOWNLOAD_META_DATA_ANNO));
+ } catch (ex) {}
+ metaData.targetFileSpec = PlacesUtils.annotations.getPageAnnotation(
+ uri, DESTINATION_FILE_URI_ANNO);
+ } catch (ex) {}
+
+ return metaData;
+ },
+
+ /**
+ * Given a data item for a session download, or a places node for a past
+ * download, updates the view as necessary.
+ * 1. If the given data is a places node, we check whether there are any
+ * elements for the same download url. If there are, then we just reset
+ * their places node. Otherwise we add a new download element.
+ * 2. If the given data is a data item, we first check if there's a history
+ * download in the list that is not associated with a data item. If we
+ * found one, we use it for the data item as well and reposition it
+ * alongside the other session downloads. If we don't, then we go ahead
+ * and create a new element for the download.
+ *
+ * @param [optional] sessionDownload
+ * A Download object, or null for history downloads.
+ * @param [optional] aPlacesNode
+ * The Places node for a history download, or null for session downloads.
+ * @param [optional] aNewest
+ * @see onDownloadAdded. Ignored for history downloads.
+ * @param [optional] aDocumentFragment
+ * To speed up the appending of multiple elements to the end of the
+ * list which are coming in a single batch (i.e. invalidateContainer),
+ * a document fragment may be passed to which the new elements would
+ * be appended. It's the caller's job to ensure the fragment is merged
+ * to the richlistbox at the end.
+ */
+ _addDownloadData(sessionDownload, aPlacesNode, aNewest = false,
+ aDocumentFragment = null) {
+ let downloadURI = aPlacesNode ? aPlacesNode.uri
+ : sessionDownload.source.url;
+ let shellsForURI = this._downloadElementsShellsForURI.get(downloadURI);
+ if (!shellsForURI) {
+ shellsForURI = new Set();
+ this._downloadElementsShellsForURI.set(downloadURI, shellsForURI);
+ }
+
+ // When a session download is attached to a shell, we ensure not to keep
+ // stale metadata around for the corresponding history download. This
+ // prevents stale state from being used if the view is rebuilt.
+ //
+ // Note that we will eagerly load the data in the cache at this point, even
+ // if we have seen no history download. The case where no history download
+ // will appear at all is rare enough in normal usage, so we can apply this
+ // simpler solution rather than keeping a list of cache items to ignore.
+ if (sessionDownload) {
+ this._cachedPlacesMetaData.delete(sessionDownload.source.url);
+ }
+
+ let newOrUpdatedShell = null;
+
+ // Trivial: if there are no shells for this download URI, we always
+ // need to create one.
+ let shouldCreateShell = shellsForURI.size == 0;
+
+ // However, if we do have shells for this download uri, there are
+ // few options:
+ // 1) There's only one shell and it's for a history download (it has
+ // no data item). In this case, we update this shell and move it
+ // if necessary
+ // 2) There are multiple shells, indicating multiple downloads for
+ // the same download uri are running. In this case we create
+ // another shell for the download (so we have one shell for each data
+ // item).
+ //
+ // Note: If a cancelled session download is already in the list, and the
+ // download is retried, onDownloadAdded is called again for the same
+ // data item. Thus, we also check that we make sure we don't have a view item
+ // already.
+ if (!shouldCreateShell &&
+ sessionDownload && !this._viewItemsForDownloads.has(sessionDownload)) {
+ // If there's a past-download-only shell for this download-uri with no
+ // associated data item, use it for the new data item. Otherwise, go ahead
+ // and create another shell.
+ shouldCreateShell = true;
+ for (let shell of shellsForURI) {
+ if (!shell.sessionDownload) {
+ shouldCreateShell = false;
+ shell.sessionDownload = sessionDownload;
+ newOrUpdatedShell = shell;
+ this._viewItemsForDownloads.set(sessionDownload, shell);
+ break;
+ }
+ }
+ }
+
+ if (shouldCreateShell) {
+ // If we are adding a new history download here, it means there is no
+ // associated session download, thus we must read the Places metadata,
+ // because it will not be obscured by the session download.
+ let historyDownload = null;
+ if (aPlacesNode) {
+ let metaData = this._cachedPlacesMetaData.get(aPlacesNode.uri) ||
+ this._getPlacesMetaDataFor(aPlacesNode.uri);
+ historyDownload = new HistoryDownload(aPlacesNode);
+ historyDownload.updateFromMetaData(metaData);
+ }
+ let shell = new HistoryDownloadElementShell(sessionDownload,
+ historyDownload);
+ shell.element._placesNode = aPlacesNode;
+ newOrUpdatedShell = shell;
+ shellsForURI.add(shell);
+ if (sessionDownload) {
+ this._viewItemsForDownloads.set(sessionDownload, shell);
+ }
+ } else if (aPlacesNode) {
+ // We are updating information for a history download for which we have
+ // at least one download element shell already. There are two cases:
+ // 1) There are one or more download element shells for this source URI,
+ // each with an associated session download. We update the Places node
+ // because we may need it later, but we don't need to read the Places
+ // metadata until the last session download is removed.
+ // 2) Occasionally, we may receive a duplicate notification for a history
+ // download with no associated session download. We have exactly one
+ // download element shell in this case, but the metdata cannot have
+ // changed, just the reference to the Places node object is different.
+ // So, we update all the node references and keep the metadata intact.
+ for (let shell of shellsForURI) {
+ if (!shell.historyDownload) {
+ // Create the element to host the metadata when needed.
+ shell.historyDownload = new HistoryDownload(aPlacesNode);
+ }
+ shell.element._placesNode = aPlacesNode;
+ }
+ }
+
+ if (newOrUpdatedShell) {
+ if (aNewest) {
+ this._richlistbox.insertBefore(newOrUpdatedShell.element,
+ this._richlistbox.firstChild);
+ if (!this._lastSessionDownloadElement) {
+ this._lastSessionDownloadElement = newOrUpdatedShell.element;
+ }
+ // Some operations like retrying an history download move an element to
+ // the top of the richlistbox, along with other session downloads.
+ // More generally, if a new download is added, should be made visible.
+ this._richlistbox.ensureElementIsVisible(newOrUpdatedShell.element);
+ } else if (sessionDownload) {
+ let before = this._lastSessionDownloadElement ?
+ this._lastSessionDownloadElement.nextSibling : this._richlistbox.firstChild;
+ this._richlistbox.insertBefore(newOrUpdatedShell.element, before);
+ this._lastSessionDownloadElement = newOrUpdatedShell.element;
+ } else {
+ let appendTo = aDocumentFragment || this._richlistbox;
+ appendTo.appendChild(newOrUpdatedShell.element);
+ }
+
+ if (this.searchTerm) {
+ newOrUpdatedShell.element.hidden =
+ !newOrUpdatedShell.element._shell.matchesSearchTerm(this.searchTerm);
+ }
+ }
+
+ // If aDocumentFragment is defined this is a batch change, so it's up to
+ // the caller to append the fragment and activate the visible shells.
+ if (!aDocumentFragment) {
+ this._ensureVisibleElementsAreActive();
+ goUpdateCommand("downloadsCmd_clearDownloads");
+ }
+ },
+
+ _removeElement(aElement) {
+ // If the element was selected exclusively, select its next
+ // sibling first, if not, try for previous sibling, if any.
+ if ((aElement.nextSibling || aElement.previousSibling) &&
+ this._richlistbox.selectedItems &&
+ this._richlistbox.selectedItems.length == 1 &&
+ this._richlistbox.selectedItems[0] == aElement) {
+ this._richlistbox.selectItem(aElement.nextSibling ||
+ aElement.previousSibling);
+ }
+
+ if (this._lastSessionDownloadElement == aElement) {
+ this._lastSessionDownloadElement = aElement.previousSibling;
+ }
+
+ this._richlistbox.removeItemFromSelection(aElement);
+ this._richlistbox.removeChild(aElement);
+ this._ensureVisibleElementsAreActive();
+ goUpdateCommand("downloadsCmd_clearDownloads");
+ },
+
+ _removeHistoryDownloadFromView(aPlacesNode) {
+ let downloadURI = aPlacesNode.uri;
+ let shellsForURI = this._downloadElementsShellsForURI.get(downloadURI);
+ if (shellsForURI) {
+ for (let shell of shellsForURI) {
+ if (shell.sessionDownload) {
+ shell.historyDownload = null;
+ } else {
+ this._removeElement(shell.element);
+ shellsForURI.delete(shell);
+ if (shellsForURI.size == 0)
+ this._downloadElementsShellsForURI.delete(downloadURI);
+ }
+ }
+ }
+ },
+
+ _removeSessionDownloadFromView(download) {
+ let shells = this._downloadElementsShellsForURI
+ .get(download.source.url);
+ if (shells.size == 0) {
+ throw new Error("Should have had at leaat one shell for this uri");
+ }
+
+ let shell = this._viewItemsForDownloads.get(download);
+ if (!shells.has(shell)) {
+ throw new Error("Missing download element shell in shells list for url");
+ }
+
+ // If there's more than one item for this download uri, we can let the
+ // view item for this this particular data item go away.
+ // If there's only one item for this download uri, we should only
+ // keep it if it is associated with a history download.
+ if (shells.size > 1 || !shell.historyDownload) {
+ this._removeElement(shell.element);
+ shells.delete(shell);
+ if (shells.size == 0) {
+ this._downloadElementsShellsForURI.delete(download.source.url);
+ }
+ } else {
+ // We have one download element shell containing both a session download
+ // and a history download, and we are now removing the session download.
+ // Previously, we did not use the Places metadata because it was obscured
+ // by the session download. Since this is no longer the case, we have to
+ // read the latest metadata before removing the session download.
+ let url = shell.historyDownload.source.url;
+ let metaData = this._getPlacesMetaDataFor(url);
+ shell.historyDownload.updateFromMetaData(metaData);
+ shell.sessionDownload = null;
+ // Move it below the session-download items;
+ if (this._lastSessionDownloadElement == shell.element) {
+ this._lastSessionDownloadElement = shell.element.previousSibling;
+ } else {
+ let before = this._lastSessionDownloadElement ?
+ this._lastSessionDownloadElement.nextSibling : this._richlistbox.firstChild;
+ this._richlistbox.insertBefore(shell.element, before);
+ }
+ }
+ },
+
+ _ensureVisibleElementsAreActive() {
+ if (!this.active || this._ensureVisibleTimer ||
+ !this._richlistbox.firstChild) {
+ return;
+ }
+
+ this._ensureVisibleTimer = setTimeout(() => {
+ delete this._ensureVisibleTimer;
+ if (!this._richlistbox.firstChild) {
+ return;
+ }
+
+ let rlbRect = this._richlistbox.getBoundingClientRect();
+ let winUtils = window.QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIDOMWindowUtils);
+ let nodes = winUtils.nodesFromRect(rlbRect.left, rlbRect.top,
+ 0, rlbRect.width, rlbRect.height, 0,
+ true, false);
+ // nodesFromRect returns nodes in z-index order, and for the same z-index
+ // sorts them in inverted DOM order, thus starting from the one that would
+ // be on top.
+ let firstVisibleNode, lastVisibleNode;
+ for (let node of nodes) {
+ if (node.localName === "richlistitem" && node._shell) {
+ node._shell.ensureActive();
+ // The first visible node is the last match.
+ firstVisibleNode = node;
+ // While the last visible node is the first match.
+ if (!lastVisibleNode) {
+ lastVisibleNode = node;
+ }
+ }
+ }
+
+ // Also activate the first invisible nodes in both boundaries (that is,
+ // above and below the visible area) to ensure proper keyboard navigation
+ // in both directions.
+ let nodeBelowVisibleArea = lastVisibleNode && lastVisibleNode.nextSibling;
+ if (nodeBelowVisibleArea && nodeBelowVisibleArea._shell) {
+ nodeBelowVisibleArea._shell.ensureActive();
+ }
+
+ let nodeAboveVisibleArea = firstVisibleNode &&
+ firstVisibleNode.previousSibling;
+ if (nodeAboveVisibleArea && nodeAboveVisibleArea._shell) {
+ nodeAboveVisibleArea._shell.ensureActive();
+ }
+ }, 10);
+ },
+
+ _place: "",
+ get place() {
+ return this._place;
+ },
+ set place(val) {
+ // Don't reload everything if we don't have to.
+ if (this._place == val) {
+ // XXXmano: places.js relies on this behavior (see Bug 822203).
+ this.searchTerm = "";
+ return val;
+ }
+
+ this._place = val;
+
+ let history = PlacesUtils.history;
+ let queries = { }, options = { };
+ history.queryStringToQueries(val, queries, { }, options);
+ if (!queries.value.length) {
+ queries.value = [history.getNewQuery()];
+ }
+
+ let result = history.executeQueries(queries.value, queries.value.length,
+ options.value);
+ result.addObserver(this, false);
+ return val;
+ },
+
+ _result: null,
+ get result() {
+ return this._result;
+ },
+ set result(val) {
+ if (this._result == val) {
+ return val;
+ }
+
+ if (this._result) {
+ this._result.removeObserver(this);
+ this._resultNode.containerOpen = false;
+ }
+
+ if (val) {
+ this._result = val;
+ this._resultNode = val.root;
+ this._resultNode.containerOpen = true;
+ this._ensureInitialSelection();
+ } else {
+ delete this._resultNode;
+ delete this._result;
+ }
+
+ return val;
+ },
+
+ get selectedNodes() {
+ return [for (element of this._richlistbox.selectedItems)
+ if (element._placesNode)
+ element._placesNode];
+ },
+
+ get selectedNode() {
+ let selectedNodes = this.selectedNodes;
+ return selectedNodes.length == 1 ? selectedNodes[0] : null;
+ },
+
+ get hasSelection() {
+ return this.selectedNodes.length > 0;
+ },
+
+ containerStateChanged(aNode, aOldState, aNewState) {
+ this.invalidateContainer(aNode)
+ },
+
+ invalidateContainer(aContainer) {
+ if (aContainer != this._resultNode) {
+ throw new Error("Unexpected container node");
+ }
+ if (!aContainer.containerOpen) {
+ throw new Error("Root container for the downloads query cannot be closed");
+ }
+
+ let suppressOnSelect = this._richlistbox.suppressOnSelect;
+ this._richlistbox.suppressOnSelect = true;
+ try {
+ // Remove the invalidated history downloads from the list and unset the
+ // places node for data downloads.
+ // Loop backwards since _removeHistoryDownloadFromView may removeChild().
+ for (let i = this._richlistbox.childNodes.length - 1; i >= 0; --i) {
+ let element = this._richlistbox.childNodes[i];
+ if (element._placesNode) {
+ this._removeHistoryDownloadFromView(element._placesNode);
+ }
+ }
+ } finally {
+ this._richlistbox.suppressOnSelect = suppressOnSelect;
+ }
+
+ if (aContainer.childCount > 0) {
+ let elementsToAppendFragment = document.createDocumentFragment();
+ for (let i = 0; i < aContainer.childCount; i++) {
+ try {
+ this._addDownloadData(null, aContainer.getChild(i), false,
+ elementsToAppendFragment);
+ } catch (ex) {
+ Cu.reportError(ex);
+ }
+ }
+
+ // _addDownloadData may not add new elements if there were already
+ // data items in place.
+ if (elementsToAppendFragment.firstChild) {
+ this._appendDownloadsFragment(elementsToAppendFragment);
+ this._ensureVisibleElementsAreActive();
+ }
+ }
+
+ goUpdateDownloadCommands();
+ },
+
+ _appendDownloadsFragment(aDOMFragment) {
+ // Workaround multiple reflows hang by removing the richlistbox
+ // and adding it back when we're done.
+
+ // Hack for bug 836283: reset xbl fields to their old values after the
+ // binding is reattached to avoid breaking the selection state
+ let xblFields = new Map();
+ for (let key of Object.getOwnPropertyNames(this._richlistbox)) {
+ let value = this._richlistbox[key];
+ xblFields.set(key, value);
+ }
+
+ let parentNode = this._richlistbox.parentNode;
+ let nextSibling = this._richlistbox.nextSibling;
+ parentNode.removeChild(this._richlistbox);
+ this._richlistbox.appendChild(aDOMFragment);
+ parentNode.insertBefore(this._richlistbox, nextSibling);
+
+ for (let [key, value] of xblFields) {
+ this._richlistbox[key] = value;
+ }
+ },
+
+ nodeInserted(aParent, aPlacesNode) {
+ this._addDownloadData(null, aPlacesNode);
+ },
+
+ nodeRemoved(aParent, aPlacesNode, aOldIndex) {
+ this._removeHistoryDownloadFromView(aPlacesNode);
+ },
+
+ nodeAnnotationChanged() {},
+ nodeIconChanged() {},
+ nodeTitleChanged() {},
+ nodeKeywordChanged() {},
+ nodeDateAddedChanged() {},
+ nodeLastModifiedChanged() {},
+ nodeHistoryDetailsChanged() {},
+ nodeTagsChanged() {},
+ sortingChanged() {},
+ nodeMoved() {},
+ nodeURIChanged() {},
+ batching() {},
+
+ get controller() {
+ return this._richlistbox.controller;
+ },
+
+ get searchTerm() {
+ return this._searchTerm;
+ },
+ set searchTerm(aValue) {
+ if (this._searchTerm != aValue) {
+ for (let element of this._richlistbox.childNodes) {
+ element.hidden = !element._shell.matchesSearchTerm(aValue);
+ }
+ this._ensureVisibleElementsAreActive();
+ }
+ return this._searchTerm = aValue;
+ },
+
+ /**
+ * When the view loads, we want to select the first item.
+ * However, because session downloads, for which the data is loaded
+ * asynchronously, always come first in the list, and because the list
+ * may (or may not) already contain history downloads at that point, it
+ * turns out that by the time we can select the first item, the user may
+ * have already started using the view.
+ * To make things even more complicated, in other cases, the places data
+ * may be loaded after the session downloads data. Thus we cannot rely on
+ * the order in which the data comes in.
+ * We work around this by attempting to select the first element twice,
+ * once after the places data is loaded and once when the session downloads
+ * data is done loading. However, if the selection has changed in-between,
+ * we assume the user has already started using the view and give up.
+ */
+ _ensureInitialSelection() {
+ // Either they're both null, or the selection has not changed in between.
+ if (this._richlistbox.selectedItem == this._initiallySelectedElement) {
+ let firstDownloadElement = this._richlistbox.firstChild;
+ if (firstDownloadElement != this._initiallySelectedElement) {
+ // We may be called before _ensureVisibleElementsAreActive,
+ // or before the download binding is attached. Therefore, ensure the
+ // first item is activated, and pass the item to the richlistbox
+ // setters only at a point we know for sure the binding is attached.
+ firstDownloadElement._shell.ensureActive();
+ Services.tm.mainThread.dispatch(() => {
+ this._richlistbox.selectedItem = firstDownloadElement;
+ this._richlistbox.currentItem = firstDownloadElement;
+ this._initiallySelectedElement = firstDownloadElement;
+ }, Ci.nsIThread.DISPATCH_NORMAL);
+ }
+ }
+ },
+
+ onDataLoadStarting() {},
+ onDataLoadCompleted() {
+ this._ensureInitialSelection();
+ },
+
+ onDownloadAdded(download, newest) {
+ this._addDownloadData(download, null, newest);
+ },
+
+ onDownloadStateChanged(download) {
+ this._viewItemsForDownloads.get(download).onStateChanged();
+ },
+
+ onDownloadChanged(download) {
+ this._viewItemsForDownloads.get(download).onChanged();
+ },
+
+ onDownloadRemoved(download) {
+ this._removeSessionDownloadFromView(download);
+ },
+
+ // nsIController
+ supportsCommand(aCommand) {
+ // Firstly, determine if this is a command that we can handle.
+ if (!DownloadsViewUI.isCommandName(aCommand)) {
+ return false;
+ }
+ if (!(aCommand in this) &&
+ !(aCommand in HistoryDownloadElementShell.prototype)) {
+ return false;
+ }
+ // If this function returns true, other controllers won't get a chance to
+ // process the command even if isCommandEnabled returns false, so it's
+ // important to check if the list is focused here to handle common commands
+ // like copy and paste correctly. The clear downloads command, instead, is
+ // specific to the downloads list but can be invoked from the toolbar, so we
+ // can just return true unconditionally.
+ return aCommand == "downloadsCmd_clearDownloads" ||
+ document.activeElement == this._richlistbox;
+ },
+
+ // nsIController
+ isCommandEnabled(aCommand) {
+ switch (aCommand) {
+ case "cmd_copy":
+ return this._richlistbox.selectedItems.length > 0;
+ case "cmd_selectAll":
+ return true;
+ case "cmd_paste":
+ return this._canDownloadClipboardURL();
+ case "downloadsCmd_clearDownloads":
+ return this._canClearDownloads();
+ default:
+ return Array.every(this._richlistbox.selectedItems,
+ element => element._shell.isCommandEnabled(aCommand));
+ }
+ },
+
+ _canClearDownloads() {
+ // Downloads can be cleared if there's at least one removable download in
+ // the list (either a history download or a completed session download).
+ // Because history downloads are always removable and are listed after the
+ // session downloads, check from bottom to top.
+ for (let elt = this._richlistbox.lastChild; elt; elt = elt.previousSibling) {
+ // Stopped, paused, and failed downloads with partial data are removed.
+ let download = elt._shell.download;
+ if (download.stopped && !(download.canceled && download.hasPartialData)) {
+ return true;
+ }
+ }
+ return false;
+ },
+
+ _copySelectedDownloadsToClipboard() {
+ let urls = [for (element of this._richlistbox.selectedItems)
+ element._shell.download.source.url];
+
+ Cc["@mozilla.org/widget/clipboardhelper;1"]
+ .getService(Ci.nsIClipboardHelper)
+ .copyString(urls.join("\n"));
+ },
+
+ _getURLFromClipboardData() {
+ let trans = Cc["@mozilla.org/widget/transferable;1"].
+ createInstance(Ci.nsITransferable);
+ trans.init(null);
+
+ let flavors = ["text/x-moz-url", "text/unicode"];
+ flavors.forEach(trans.addDataFlavor);
+
+ Services.clipboard.getData(trans, Services.clipboard.kGlobalClipboard);
+
+ // Getting the data or creating the nsIURI might fail.
+ try {
+ let data = {};
+ trans.getAnyTransferData({}, data, {});
+ let [url, name] = data.value.QueryInterface(Ci.nsISupportsString)
+ .data.split("\n");
+ if (url) {
+ return [NetUtil.newURI(url, null, null).spec, name];
+ }
+ } catch (ex) {}
+
+ return ["", ""];
+ },
+
+ _canDownloadClipboardURL() {
+ let [url, name] = this._getURLFromClipboardData();
+ return url != "";
+ },
+
+ _downloadURLFromClipboard() {
+ let [url, name] = this._getURLFromClipboardData();
+ let browserWin = RecentWindow.getMostRecentBrowserWindow();
+ let initiatingDoc = browserWin ? browserWin.document : document;
+ DownloadURL(url, name, initiatingDoc);
+ },
+
+ // nsIController
+ doCommand(aCommand) {
+ // Commands may be invoked with keyboard shortcuts even if disabled.
+ if (!this.isCommandEnabled(aCommand)) {
+ return;
+ }
+
+ // If this command is not selection-specific, execute it.
+ if (aCommand in this) {
+ this[aCommand]();
+ return;
+ }
+
+ // Cloning the nodelist into an array to get a frozen list of selected items.
+ // Otherwise, the selectedItems nodelist is live and doCommand may alter the
+ // selection while we are trying to do one particular action, like removing
+ // items from history.
+ let selectedElements = [...this._richlistbox.selectedItems];
+ for (let element of selectedElements) {
+ element._shell.doCommand(aCommand);
+ }
+ },
+
+ // nsIController
+ onEvent() {},
+
+ cmd_copy() {
+ this._copySelectedDownloadsToClipboard();
+ },
+
+ cmd_selectAll() {
+ this._richlistbox.selectAll();
+ },
+
+ cmd_paste() {
+ this._downloadURLFromClipboard();
+ },
+
+ downloadsCmd_clearDownloads() {
+ this._downloadsData.removeFinished();
+ if (this.result) {
+ Cc["@mozilla.org/browser/download-history;1"]
+ .getService(Ci.nsIDownloadHistory)
+ .removeAllDownloads();
+ }
+ // There may be no selection or focus change as a result
+ // of these change, and we want the command updated immediately.
+ goUpdateCommand("downloadsCmd_clearDownloads");
+ },
+
+ onContextMenu(aEvent) {
+ let element = this._richlistbox.selectedItem;
+ if (!element || !element._shell) {
+ return false;
+ }
+
+ // Set the state attribute so that only the appropriate items are displayed.
+ let contextMenu = document.getElementById("downloadsContextMenu");
+ let download = element._shell.download;
+ contextMenu.setAttribute("state",
+ DownloadsCommon.stateOfDownload(download));
+ contextMenu.classList.toggle("temporary-block",
+ !!download.hasBlockedData);
+
+ if (!download.stopped) {
+ // The hasPartialData property of a download may change at any time after
+ // it has started, so ensure we update the related command now.
+ goUpdateCommand("downloadsCmd_pauseResume");
+ }
+
+ return true;
+ },
+
+ onKeyPress(aEvent) {
+ let selectedElements = this._richlistbox.selectedItems;
+ if (aEvent.keyCode == KeyEvent.DOM_VK_RETURN) {
+ // In the content tree, opening bookmarks by pressing return is only
+ // supported when a single item is selected. To be consistent, do the
+ // same here.
+ if (selectedElements.length == 1) {
+ let element = selectedElements[0];
+ if (element._shell) {
+ element._shell.doDefaultCommand();
+ }
+ }
+ }
+ else if (aEvent.charCode == " ".charCodeAt(0)) {
+ // Pause/Resume every selected download
+ for (let element of selectedElements) {
+ if (element._shell.isCommandEnabled("downloadsCmd_pauseResume")) {
+ element._shell.doCommand("downloadsCmd_pauseResume");
+ }
+ }
+ }
+ },
+
+ onDoubleClick(aEvent) {
+ if (aEvent.button != 0) {
+ return;
+ }
+
+ let selectedElements = this._richlistbox.selectedItems;
+ if (selectedElements.length != 1) {
+ return;
+ }
+
+ let element = selectedElements[0];
+ if (element._shell) {
+ element._shell.doDefaultCommand();
+ }
+ },
+
+ onScroll() {
+ this._ensureVisibleElementsAreActive();
+ },
+
+ onSelect() {
+ goUpdateDownloadCommands();
+
+ let selectedElements = this._richlistbox.selectedItems;
+ for (let elt of selectedElements) {
+ if (elt._shell) {
+ elt._shell.onSelect();
+ }
+ }
+ },
+
+ onDragStart(aEvent) {
+ // TODO Bug 831358: Support d&d for multiple selection.
+ // For now, we just drag the first element.
+ let selectedItem = this._richlistbox.selectedItem;
+ if (!selectedItem) {
+ return;
+ }
+
+ let targetPath = selectedItem._shell.download.target.path;
+ if (!targetPath) {
+ return;
+ }
+
+ // We must check for existence synchronously because this is a DOM event.
+ let file = new FileUtils.File(targetPath);
+ if (!file.exists()) {
+ return;
+ }
+
+ let dt = aEvent.dataTransfer;
+ dt.mozSetDataAt("application/x-moz-file", file, 0);
+ let url = Services.io.newFileURI(file).spec;
+ dt.setData("text/uri-list", url);
+ dt.setData("text/plain", url);
+ dt.effectAllowed = "copyMove";
+ dt.addElement(selectedItem);
+ },
+
+ onDragOver(aEvent) {
+ let types = aEvent.dataTransfer.types;
+ if (types.includes("text/uri-list") ||
+ types.includes("text/x-moz-url") ||
+ types.includes("text/plain")) {
+ aEvent.preventDefault();
+ }
+ },
+
+ onDrop(aEvent) {
+ let dt = aEvent.dataTransfer;
+ // If dragged item is from our source, do not try to
+ // redownload already downloaded file.
+ if (dt.mozGetDataAt("application/x-moz-file", 0)) {
+ return;
+ }
+
+ let links = Services.droppedLinkHandler.dropLinks(aEvent);
+ if (!links.length)
+ return;
+ let browserWin = RecentWindow.getMostRecentBrowserWindow();
+ let initiatingDoc = browserWin ? browserWin.document : document;
+ for (let link of links) {
+ if (link.url.startsWith("about:"))
+ continue;
+ DownloadURL(link.url, link.name, initiatingDoc);
+ }
+ },
+};
+
+for (let methodName of ["load", "applyFilter", "selectNode", "selectItems"]) {
+ DownloadsPlacesView.prototype[methodName] = function () {
+ throw new Error("|" + methodName +
+ "| is not implemented by the downloads view.");
+ }
+}
+
+function goUpdateDownloadCommands() {
+ function updateCommandsForObject(object) {
+ for (let name in object) {
+ if (DownloadsViewUI.isCommandName(name)) {
+ goUpdateCommand(name);
+ }
+ }
+ }
+ updateCommandsForObject(DownloadsPlacesView.prototype);
+ updateCommandsForObject(HistoryDownloadElementShell.prototype);
+}