/* 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/. */ XPCOMUtils.defineLazyModuleGetter(this, "DownloadsDataItem", "resource:///modules/DownloadsCommon.jsm"); XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow", "resource:///modules/RecentWindow.jsm"); const nsIDM = Ci.nsIDownloadManager; const DESTINATION_FILE_URI_ANNO = "downloads/destinationFileURI"; const DOWNLOAD_META_DATA_ANNO = "downloads/metaData"; const DOWNLOAD_VIEW_SUPPORTED_COMMANDS = ["cmd_delete", "cmd_copy", "cmd_paste", "cmd_selectAll", "downloadsCmd_pauseResume", "downloadsCmd_cancel", "downloadsCmd_open", "downloadsCmd_show", "downloadsCmd_retry", "downloadsCmd_openReferrer", "downloadsCmd_clearDownloads"]; /** * Represents a download from the browser history. It implements part of the * interface of the Download object. * * @param url * URI string for the download source. * @param endTime * Timestamp with the end time for the download, used if there is no * additional metadata available. */ function HistoryDownload(aPlacesNode) { // TODO (bug 829201): history downloads should get the referrer from Places. this.source = { url: aPlacesNode.uri }; this.target = { path: undefined, 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(aPlacesMetaData) { try { this.target.path = Cc["@mozilla.org/network/protocol;1?name=file"] .getService(Ci.nsIFileProtocolHandler) .getFileFromURLSpec(aPlacesMetaData. targetFileURISpec).path; } catch (ex) { this.target.path = undefined; } try { let metaData = JSON.parse(aPlacesMetaData.jsonDetails); this.succeeded = metaData.state == nsIDM.DOWNLOAD_FINISHED; this.error = metaData.state == nsIDM.DOWNLOAD_FAILED ? { message: "History download failed." } : metaData.state == nsIDM.DOWNLOAD_BLOCKED_PARENTAL ? { becauseBlockedByParentalControls: true } : metaData.state == nsIDM.DOWNLOAD_DIRTY ? { becauseBlockedByReputationCheck: true } : null; this.canceled = metaData.state == nsIDM.DOWNLOAD_CANCELED || metaData.state == nsIDM.DOWNLOAD_PAUSED; this.endTime = metaData.endTime; this.target.size = metaData.fileSize; } catch (ex) { // 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; this.target.size = -1; } // This property is currently used to get the size of downloads, but will be // replaced by download.target.size when available for session downloads. this.totalBytes = this.target.size; this.currentBytes = this.target.size; }, /** * 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. */ start() { // In future we may try to download into the same original target uri, when // we have it. Though that requires verifying the path is still valid and // may surprise the user if he wants to be requested every time. 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(); }, }; /** * Represents a download from the browser history. It uses the same interface as * the DownloadsDataItem object. * * @param aPlacesNode * The Places node for the history download. */ function DownloadsHistoryDataItem(aPlacesNode) { this.download = new HistoryDownload(aPlacesNode); } DownloadsHistoryDataItem.prototype = { __proto__: DownloadsDataItem.prototype, }; /** * 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 current download are present, the current 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] aSessionDataItem * The session download, required if aHistoryDataItem is not set. * @param [optional] aHistoryDataItem * The history download, required if aSessionDataItem is not set. */ function HistoryDownloadElementShell(aSessionDataItem, aHistoryDataItem) { this.element = document.createElement("richlistitem"); this.element._shell = this; this.element.classList.add("download"); this.element.classList.add("download-state"); if (aSessionDataItem) { this.sessionDataItem = aSessionDataItem; } if (aHistoryDataItem) { this.historyDataItem = aHistoryDataItem; } } HistoryDownloadElementShell.prototype = { __proto__: 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: function DES_ensureActive() { if (!this._active) { this._active = true; this.element.setAttribute("active", true); this._updateUI(); } }, get active() !!this._active, /** * DownloadsDataItem or DownloadsHistoryDataItem object to use for displaying * information and for executing commands in the user interface. */ get dataItem() this._sessionDataItem || this._historyDataItem, _sessionDataItem: null, get sessionDataItem() this._sessionDataItem, set sessionDataItem(aValue) { if (this._sessionDataItem != aValue) { if (!aValue && !this._historyDataItem) { throw new Error("Should always have either a dataItem or a historyDataItem"); } this._sessionDataItem = aValue; this.ensureActive(); this._updateUI(); } return aValue; }, _historyDataItem: null, get historyDataItem() this._historyDataItem, set historyDataItem(aValue) { if (this._historyDataItem != aValue) { if (!aValue && !this._sessionDataItem) { throw new Error("Should always have either a dataItem or a historyDataItem"); } this._historyDataItem = 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._sessionDataItem) { 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.element.setAttribute("image", this.image); this.element.setAttribute("state", DownloadsCommon.stateOfDownload(this.download)); if (this.element.selected) { goUpdateDownloadCommands(); else goUpdateCommand("downloadsCmd_clearDownloads"); }, onChanged() { this._updateProgress(); }, /* nsIController */ isCommandEnabled: function DES_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": // We cannot open a session download file unless it's succeeded. // If it's succeeded, we need to make sure the file was not removed, // as we do for past downloads. if (this._sessionDataItem && !this.download.succeeded) { return false; } if (this._targetFileChecked) { return this._targetFileExists; } // If the target file information is not yet fetched, // temporarily assume that the file is in place. return this.download.succeeded; case "downloadsCmd_show": // TODO: Bug 827010 - Handle part-file asynchronously. if (this._sessionDataItem && this.download.target.partFilePath) { let partFile = new FileUtils.File(this.download.target.partFilePath); if (partFile.exists()) { return true; } } if (this._targetFileChecked) { return this._targetFileExists; } // If the target file information is not yet fetched, // temporarily assume that the file is in place. return this.download.succeeded; case "downloadsCmd_pauseResume": return this.download.hasPartialData && !this.download.error; case "downloadsCmd_retry": return this.download.canceled || this.download.error; case "downloadsCmd_openReferrer": return !!this.download.source.referrer; case "cmd_delete": // We don't want in-progress downloads to be removed accidentally. return this.download.stopped; case "downloadsCmd_cancel": return !!this._sessionDataItem; } return false; }, /* nsIController */ doCommand: function DES_doCommand(aCommand) { switch (aCommand) { case "downloadsCmd_open": { let file = new FileUtils.File(this.download.target.path); DownloadsCommon.openDownloadedFile(file, null, window); break; } case "downloadsCmd_show": { let file = new FileUtils.File(this.download.target.path); DownloadsCommon.showDownloadedFile(file); break; } case "downloadsCmd_openReferrer": { openURL(this.download.source.referrer); break; } case "downloadsCmd_cancel": { this.download.cancel().catch(() => {}); this.download.removePartialData().catch(Cu.reportError); break; } case "cmd_delete": { if (this._sessionDataItem) { Downloads.getList(Downloads.ALL) .then(list => list.remove(this.download)) .then(() => this.download.finalize(true)) .catch(Cu.reportError); } if (this._historyDataItem) { let uri = NetUtil.newURI(this.download.source.url); PlacesUtils.bhistory.removePage(uri); } break; } case "downloadsCmd_retry": { // Errors when retrying are already reported as download failures. this.download.start().catch(() => {}); break; } case "downloadsCmd_pauseResume": { // This command is only enabled for session downloads. if (this.download.stopped) { this.download.start(); } else { this.download.cancel(); } break; } } }, // 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: function DES_matchesSearchTerm(aTerm) { if (!aTerm) return true; aTerm = aTerm.toLowerCase(); return this.displayName.toLowerCase().contains(aTerm) || this.download.source.url.toLowerCase().contains(aTerm); }, // Handles return keypress on the element (the keypress listener is // set in the DownloadsPlacesView object). doDefaultCommand: function DES_doDefaultCommand() { function getDefaultCommandForState(aState) { switch (aState) { case nsIDM.DOWNLOAD_FINISHED: return "downloadsCmd_open"; case nsIDM.DOWNLOAD_PAUSED: return "downloadsCmd_pauseResume"; case nsIDM.DOWNLOAD_NOTSTARTED: case nsIDM.DOWNLOAD_QUEUED: return "downloadsCmd_cancel"; case nsIDM.DOWNLOAD_FAILED: case nsIDM.DOWNLOAD_CANCELED: return "downloadsCmd_retry"; case nsIDM.DOWNLOAD_SCANNING: return "downloadsCmd_show"; case nsIDM.DOWNLOAD_BLOCKED_PARENTAL: case nsIDM.DOWNLOAD_DIRTY: case nsIDM.DOWNLOAD_BLOCKED_POLICY: return "downloadsCmd_openReferrer"; } return ""; } let command = getDefaultCommandForState( DownloadsCommon.stateOfDownload(this.download)); 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: function DES_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 { this._targetFileExists = yield OS.File.exists(this.download.target.path); } 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(); } }), }; /** * A Downloads Places View is a places view designed to show a places query * for history downloads alongside the current "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._viewItemsForDataItems = 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 = false; // Make sure to unregister the view if the window is closed. window.addEventListener("unload", function() { window.controllers.removeController(this); this._downloadsData.removeView(this); this.result = null; }.bind(this), true); // Resizing the window may change items visibility. window.addEventListener("resize", function() { this._ensureVisibleElementsAreActive(); }.bind(this), true); } DownloadsPlacesView.prototype = { get associatedElement() this._richlistbox, get active() this._active, set active(val) { this._active = val; if (this._active) this._ensureVisibleElementsAreActive(); return this._active; }, /** * Map containing a metadata object for each download source URI found in * Places annotations, or null if this cache must be rebuilt. */ _cachedPlacesMetaData: null, /** * This method exists in order to optimize the first 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 metod is first called, after the Places result container has been * invalidated, it reads the annotations for all the history downloads. * * At this point, as metadata for the various elements is requested by the * view, it is pulled from the cache and returned as an object. * * This works efficiently because the metadata is requested only for newly * created element shells that contain a history download but don't have a * matching session download, and at most one such element shell is created * for each source URI. * * @param url * URI string of the Places node for which metadata is requested. * * @return Object of the form { targetFileURISpec, jsonDetails }. * Any of the properties may be missing from the object. */ _getCachedPlacesMetaDataFor(url) { if (!this._cachedPlacesMetaData) { this._cachedPlacesMetaData = new Map(); // Use the destination file annotation to build the initial Map of items. for (let result of PlacesUtils.annotations.getAnnotationsWithName( DESTINATION_FILE_URI_ANNO)) { this._cachedPlacesMetaData.set(result.uri.spec, { targetFileURISpec: result.annotationValue, }); } // Add the string with the JSON details from the metadata annotation. for (let result of PlacesUtils.annotations.getAnnotationsWithName( DOWNLOAD_META_DATA_ANNO)) { let metadata = this._cachedPlacesMetaData.get(result.uri.spec); // The destination file annotation is expected to be present for all // the downloads with the metadata annotation. If this is not the case, // we simply ignore the item, as if it has no JSON details at all. if (metadata) { metadata.jsonDetails = result.annotationValue; } } } let metadata = this._cachedPlacesMetaData.get(url); this._cachedPlacesMetaData.delete(url); // In the rare case where a history download is added again, but there is no // corresponding session download, read the metadata from the database. This // could potentially cause an inefficient database access for very old // downloads with no metadata to begin with, but these should have been // already deleted from history on a recent browser profile. return metadata || this._getPlacesMetaDataFor(url); }, /** * Read the latest version of the Places metadata for the given URI. * * @param url * URI string of the Places node for which metadata is requested. * * @return Object of the form { targetFileURISpec, jsonDetails }. * Any of the properties may be missing from the object. */ _getPlacesMetaDataFor(url) { let metadata = {}; try { let uri = NetUtil.newURI(url); metadata = { targetFileURISpec: PlacesUtils.annotations.getPageAnnotation( uri, DESTINATION_FILE_URI_ANNO), }; metadata.jsonDetails = PlacesUtils.annotations.getPageAnnotation( uri, DOWNLOAD_META_DATA_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 aDataItem * The data item of a session download. Set to null for history * downloads data. * @param [optional] aPlacesNode * The places node for a history download. Required if there's no data * item. * @param [optional] aNewest * @see onDataItemAdded. 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: function DPV_addDownloadData(aDataItem, aPlacesNode, aNewest = false, aDocumentFragment = null) { let sessionDownload = aDataItem && aDataItem.download; let downloadURI = aPlacesNode ? aPlacesNode.uri : sessionDownload.source.url; let shellsForURI = this._downloadElementsShellsForURI.get(downloadURI); if (!shellsForURI) { shellsForURI = new Set(); this._downloadElementsShellsForURI.set(downloadURI, shellsForURI); } 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 retired, onDataItemAdded 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 && aDataItem && !this._viewItemsForDataItems.has(aDataItem)) { // 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.sessionDataItem) { shouldCreateShell = false; shell.sessionDataItem = aDataItem; newOrUpdatedShell = shell; this._viewItemsForDataItems.set(aDataItem, 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 historyDataItem = null; if (aPlacesNode) { let metaData = this._getCachedPlacesMetaDataFor(aPlacesNode.uri); historyDataItem = new DownloadsHistoryDataItem(aPlacesNode); historyDataItem.download.updateFromMetaData(metaData); } let shell = new HistoryDownloadElementShell(aDataItem, historyDataItem); shell.element._placesNode = aPlacesNode; newOrUpdatedShell = shell; shellsForURI.add(shell); if (aDataItem) this._viewItemsForDataItems.set(aDataItem, 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.historyDataItem) { // Create the element to host the metadata when needed. shell.historyDataItem = new DownloadsHistoryDataItem(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 (aDataItem) { 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: function DPV__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: function DPV__removeHistoryDownloadFromView(aPlacesNode) { let downloadURI = aPlacesNode.uri; let shellsForURI = this._downloadElementsShellsForURI.get(downloadURI); if (shellsForURI) { for (let shell of shellsForURI) { if (shell.sessionDataItem) { shell.historyDataItem = null; } else { this._removeElement(shell.element); shellsForURI.delete(shell); if (shellsForURI.size == 0) this._downloadElementsShellsForURI.delete(downloadURI); } } } }, _removeSessionDownloadFromView: function DPV__removeSessionDownloadFromView(aDataItem) { let download = aDataItem.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._viewItemsForDataItems.get(aDataItem); 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.historyDataItem) { 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.historyDataItem.download.source.url; let metaData = this._getPlacesMetaDataFor(url); shell.historyDataItem.download.updateFromMetaData(metaData); shell.sessionDataItem = 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: function DPV__ensureVisibleElementsAreActive() { if (!this.active || this._ensureVisibleTimer || !this._richlistbox.firstChild) return; this._ensureVisibleTimer = setTimeout(function() { 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(); }.bind(this), 10); }, _place: "", get place() 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() 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() this.selectedNodes.length > 0, containerStateChanged: function DPV_containerStateChanged(aNode, aOldState, aNewState) { this.invalidateContainer(aNode) }, invalidateContainer: function DPV_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"); // When the container is invalidated, it means we are about to re-read all // the information about history downloads from the database, discarding the // download element shells, thus we fully rebuild the Places annotation // cache with the latest values. this._cachedPlacesMetaData = null; 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: function DPV__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, value] in Iterator(this._richlistbox)) { 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: function DPV_nodeInserted(aParent, aPlacesNode) { this._addDownloadData(null, aPlacesNode); }, nodeRemoved: function DPV_nodeRemoved(aParent, aPlacesNode, aOldIndex) { this._removeHistoryDownloadFromView(aPlacesNode); }, nodeAnnotationChanged() {}, nodeIconChanged() {}, nodeTitleChanged() {}, nodeKeywordChanged: function() {}, nodeDateAddedChanged: function() {}, nodeLastModifiedChanged: function() {}, nodeHistoryDetailsChanged: function() {}, nodeTagsChanged: function() {}, sortingChanged: function() {}, nodeMoved: function() {}, nodeURIChanged: function() {}, batching: function() {}, get controller() this._richlistbox.controller, get searchTerm() 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: function DPV__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(function() { this._richlistbox.selectedItem = firstDownloadElement; this._richlistbox.currentItem = firstDownloadElement; this._initiallySelectedElement = firstDownloadElement; }.bind(this), Ci.nsIThread.DISPATCH_NORMAL); } } }, onDataLoadStarting: function() { }, onDataLoadCompleted: function DPV_onDataLoadCompleted() { this._ensureInitialSelection(); }, onDataItemAdded: function DPV_onDataItemAdded(aDataItem, aNewest) { this._addDownloadData(aDataItem, null, aNewest); }, onDataItemRemoved: function DPV_onDataItemRemoved(aDataItem) { this._removeSessionDownloadFromView(aDataItem); }, // DownloadsView onDataItemStateChanged(aDataItem) { this._viewItemsForDataItems.get(aDataItem).onStateChanged(); }, // DownloadsView onDataItemChanged(aDataItem) { this._viewItemsForDataItems.get(aDataItem).onChanged(); }, supportsCommand: function DPV_supportsCommand(aCommand) { if (DOWNLOAD_VIEW_SUPPORTED_COMMANDS.indexOf(aCommand) != -1) { // The clear-downloads command may be performed by the toolbar-button, // which can be focused on OS X. Thus enable this command even if the // richlistbox is not focused. // For other commands, be prudent and disable them unless the richlistview // is focused. It's important to make the decision here rather than in // isCommandEnabled. Otherwise our controller may "steal" commands from // other controls in the window (see goUpdateCommand & // getControllerForCommand). if (document.activeElement == this._richlistbox || aCommand == "downloadsCmd_clearDownloads") { return true; } } return false; }, isCommandEnabled: function DPV_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, function(element) { return element._shell.isCommandEnabled(aCommand); }); } }, _canClearDownloads: function DPV__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: function DPV__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"), document); }, _getURLFromClipboardData: function DPV__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: function DPV__canDownloadClipboardURL() { let [url, name] = this._getURLFromClipboardData(); return url != ""; }, _downloadURLFromClipboard: function DPV__downloadURLFromClipboard() { let [url, name] = this._getURLFromClipboardData(); let browserWin = RecentWindow.getMostRecentBrowserWindow(); let initiatingDoc = browserWin ? browserWin.document : document; DownloadURL(url, name, initiatingDoc); }, doCommand: function DPV_doCommand(aCommand) { // Commands may be invoked with keyboard shortcuts even if disabled. if (!this.isCommandEnabled(aCommand)) { return; } switch (aCommand) { case "cmd_copy": this._copySelectedDownloadsToClipboard(); break; case "cmd_selectAll": this._richlistbox.selectAll(); break; case "cmd_paste": this._downloadURLFromClipboard(); break; case "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"); break; default: { // 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); } } } }, onEvent: function() { }, onContextMenu: function DPV_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)); 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: function DPV_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: function DPV_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: function DPV_onScroll() { this._ensureVisibleElementsAreActive(); }, onSelect: function DPV_onSelect() { goUpdateDownloadCommands(); let selectedElements = this._richlistbox.selectedItems; for (let elt of selectedElements) { if (elt._shell) elt._shell.onSelect(); } }, onDragStart: function DPV_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: function DPV_onDragOver(aEvent) { let types = aEvent.dataTransfer.types; if (types.contains("text/uri-list") || types.contains("text/x-moz-url") || types.contains("text/plain")) { aEvent.preventDefault(); } }, onDrop: function DPV_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() { for (let command of DOWNLOAD_VIEW_SUPPORTED_COMMANDS) { goUpdateCommand(command); } }