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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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,
/* eslint-env mozilla/browser-window */
/**
* Handles the Downloads panel user interface for each browser window.
*
* This file includes the following constructors and global objects:
*
* DownloadsPanel
* Main entry point for the downloads panel interface.
*
* DownloadsView
* Builds and updates the downloads list widget, responding to changes in the
* download state and real-time data. In addition, handles part of the user
* interaction events raised by the downloads list widget.
*
* DownloadsViewItem
* Builds and updates a single item in the downloads list widget, responding to
* changes in the download state and real-time data, and handles the user
* interaction events related to a single item in the downloads list widgets.
*
* DownloadsViewController
* Handles part of the user interaction events raised by the downloads list
* widget, in particular the "commands" that apply to multiple items, and
* dispatches the commands that apply to individual items.
*/
"use strict";
var { XPCOMUtils } = ChromeUtils.importESModule(
);
ChromeUtils.defineESModuleGetters(this, {
});
const { Integration } = ChromeUtils.importESModule(
);
/* global DownloadIntegration */
Integration.downloads.defineESModuleGetter(
this,
"DownloadIntegration",
);
// DownloadsPanel
/**
* Main entry point for the downloads panel interface.
*/
var DownloadsPanel = {
// Initialization and termination
/**
* Timeout that re-enables previously disabled download items in the downloads panel
* after some time has passed.
*/
_delayTimeout: null,
/** The panel is not linked to downloads data yet. */
_initialized: false,
/** The panel will be shown as soon as data is available. */
_waitingDataForOpen: false,
/**
* Starts loading the download data in background, without opening the panel.
* Use showPanel instead to load the data and open the panel at the same time.
*/
initialize() {
DownloadsCommon.log(
"Attempting to initialize DownloadsPanel for a window."
);
if (DownloadIntegration.downloadSpamProtection) {
DownloadIntegration.downloadSpamProtection.register(
DownloadsView,
window
);
}
if (this._initialized) {
DownloadsCommon.log("DownloadsPanel is already initialized.");
return;
}
this._initialized = true;
window.addEventListener("unload", this.onWindowUnload);
window.ensureCustomElements("moz-button-group");
// Load and resume active downloads if required. If there are downloads to
// be shown in the panel, they will be loaded asynchronously.
DownloadsCommon.initializeAllDataLinks();
// Now that data loading has eventually started, load the required XUL
// elements and initialize our views.
this.panel.hidden = false;
DownloadsViewController.initialize();
DownloadsCommon.log("Attaching DownloadsView...");
DownloadsCommon.getData(window).addView(DownloadsView);
DownloadsCommon.getSummary(window, DownloadsView.kItemCountLimit).addView(
DownloadsSummary
);
DownloadsCommon.log(
"DownloadsView attached - the panel for this window",
"should now see download items come in."
);
DownloadsPanel._attachEventListeners();
DownloadsCommon.log("DownloadsPanel initialized.");
},
/**
* Closes the downloads panel and frees the internal resources related to the
* downloads. The downloads panel can be reopened later, even after this
* function has been called.
*/
terminate() {
DownloadsCommon.log("Attempting to terminate DownloadsPanel for a window.");
if (!this._initialized) {
DownloadsCommon.log(
"DownloadsPanel was never initialized. Nothing to do."
);
return;
}
window.removeEventListener("unload", this.onWindowUnload);
// Ensure that the panel is closed before shutting down.
this.hidePanel();
DownloadsViewController.terminate();
DownloadsCommon.getData(window).removeView(DownloadsView);
DownloadsCommon.getSummary(
window,
DownloadsView.kItemCountLimit
).removeView(DownloadsSummary);
this._unattachEventListeners();
if (DownloadIntegration.downloadSpamProtection) {
DownloadIntegration.downloadSpamProtection.unregister(window);
}
this._initialized = false;
DownloadsSummary.active = false;
DownloadsCommon.log("DownloadsPanel terminated.");
},
// Panel interface
/**
* Main panel element in the browser window.
*/
get panel() {
delete this.panel;
return (this.panel = document.getElementById("downloadsPanel"));
},
/**
* Starts opening the downloads panel interface, anchored to the downloads
* button of the browser window. The list of downloads to display is
* initialized the first time this method is called, and the panel is shown
* only when data is ready.
*/
showPanel(openedManually = false, isKeyPress = false) {
Services.telemetry.scalarAdd("downloads.panel_shown", 1);
DownloadsCommon.log("Opening the downloads panel.");
this._openedManually = openedManually;
this._preventFocusRing = !openedManually || !isKeyPress;
if (this.isPanelShowing) {
DownloadsCommon.log("Panel is already showing - focusing instead.");
this._focusPanel();
return;
}
// As a belt-and-suspenders check, ensure the button is not hidden.
DownloadsButton.unhide();
this.initialize();
// Delay displaying the panel because this function will sometimes be
// called while another window is closing (like the window for selecting
// whether to save or open the file), and that would cause the panel to
// close immediately.
setTimeout(() => this._openPopupIfDataReady(), 0);
DownloadsCommon.log("Waiting for the downloads panel to appear.");
this._waitingDataForOpen = true;
},
/**
* Hides the downloads panel, if visible, but keeps the internal state so that
* the panel can be reopened quickly if required.
*/
hidePanel() {
DownloadsCommon.log("Closing the downloads panel.");
if (!this.isPanelShowing) {
DownloadsCommon.log("Downloads panel is not showing - nothing to do.");
return;
}
PanelMultiView.hidePopup(this.panel);
DownloadsCommon.log("Downloads panel is now closed.");
},
/**
* Indicates whether the panel is showing.
* @note this includes the hiding state.
*/
get isPanelShowing() {
return this._waitingDataForOpen || this.panel.state != "closed";
},
handleEvent(aEvent) {
switch (aEvent.type) {
case "mousemove":
if (
!DownloadsView.contextMenuOpen &&
!DownloadsView.subViewOpen &&
this.panel.contains(document.activeElement)
) {
// Let mouse movement remove focus rings and reset focus in the panel.
// This behavior is copied from PanelMultiView.
document.activeElement.blur();
DownloadsView.richListBox.removeAttribute("force-focus-visible");
this._preventFocusRing = true;
this._focusPanel();
}
break;
case "keydown":
this._onKeyDown(aEvent);
break;
case "keypress":
this._onKeyPress(aEvent);
break;
case "focus":
case "select":
this._onSelect(aEvent);
break;
}
},
// Callback functions from DownloadsView
/**
* Called after data loading finished.
*/
onViewLoadCompleted() {
this._openPopupIfDataReady();
},
// User interface event functions
onWindowUnload() {
// This function is registered as an event listener, we can't use "this".
DownloadsPanel.terminate();
},
onPopupShown(aEvent) {
// Ignore events raised by nested popups.
if (aEvent.target != aEvent.currentTarget) {
return;
}
DownloadsCommon.log("Downloads panel has shown.");
// Since at most one popup is open at any given time, we can set globally.
DownloadsCommon.getIndicatorData(window).attentionSuppressed |=
DownloadsCommon.SUPPRESS_PANEL_OPEN;
// Ensure that the first item is selected when the panel is focused.
if (DownloadsView.richListBox.itemCount > 0) {
DownloadsView.richListBox.selectedIndex = 0;
}
this._focusPanel();
},
onPopupHidden(aEvent) {
// Ignore events raised by nested popups.
if (aEvent.target != aEvent.currentTarget) {
return;
}
DownloadsCommon.log("Downloads panel has hidden.");
if (this._delayTimeout) {
DownloadsView.richListBox.removeAttribute("disabled");
clearTimeout(this._delayTimeout);
this._stopWatchingForSpammyDownloadActivation();
this._delayTimeout = null;
}
DownloadsView.richListBox.removeAttribute("force-focus-visible");
// Since at most one popup is open at any given time, we can set globally.
DownloadsCommon.getIndicatorData(window).attentionSuppressed &=
~DownloadsCommon.SUPPRESS_PANEL_OPEN;
// Allow the anchor to be hidden.
DownloadsButton.releaseAnchor();
},
// Related operations
/**
* Shows or focuses the user interface dedicated to downloads history.
*/
showDownloadsHistory() {
DownloadsCommon.log("Showing download history.");
// Hide the panel before showing another window, otherwise focus will return
// to the browser window when the panel closes automatically.
this.hidePanel();
BrowserCommands.downloadsUI();
},
// Internal functions
/**
* Attach event listeners to a panel element. These listeners should be
* removed in _unattachEventListeners. This is called automatically after the
* panel has successfully loaded.
*/
_attachEventListeners() {
// Handle keydown to support accel-V.
this.panel.addEventListener("keydown", this);
// Handle keypress to be able to preventDefault() events before they reach
// the richlistbox, for keyboard navigation.
this.panel.addEventListener("keypress", this);
this.panel.addEventListener("mousemove", this);
DownloadsView.richListBox.addEventListener("focus", this);
DownloadsView.richListBox.addEventListener("select", this);
},
/**
* Unattach event listeners that were added in _attachEventListeners. This
* is called automatically on panel termination.
*/
_unattachEventListeners() {
this.panel.removeEventListener("keydown", this);
this.panel.removeEventListener("keypress", this);
this.panel.removeEventListener("mousemove", this);
DownloadsView.richListBox.removeEventListener("focus", this);
DownloadsView.richListBox.removeEventListener("select", this);
},
_onKeyPress(aEvent) {
// Handle unmodified keys only.
if (aEvent.altKey || aEvent.ctrlKey || aEvent.shiftKey || aEvent.metaKey) {
return;
}
// Pass keypress events to the richlistbox view when it's focused.
if (document.activeElement === DownloadsView.richListBox) {
DownloadsView.onDownloadKeyPress(aEvent);
}
},
/**
* Keydown listener that listens for the keys to start key focusing, as well
* as the the accel-V "paste" event, which initiates a file download if the
* pasted item can be resolved to a URI.
*/
_onKeyDown(aEvent) {
if (DownloadsView.richListBox.hasAttribute("disabled")) {
this._handlePotentiallySpammyDownloadActivation(aEvent);
return;
}
let richListBox = DownloadsView.richListBox;
// If the user has pressed the up or down cursor key, force-enable focus
// indicators for the richlistbox. :focus-visible doesn't work in this case
// because the the focused element may not change here if the richlistbox
// already had focus. The force-focus-visible attribute will be removed
// again if the user moves the mouse on the panel or if the panel is closed.
if (
aEvent.keyCode == aEvent.DOM_VK_UP ||
aEvent.keyCode == aEvent.DOM_VK_DOWN
) {
richListBox.setAttribute("force-focus-visible", "true");
}
// If the footer is focused and the downloads list has at least 1 element
// in it, focus the last element in the list when going up.
if (aEvent.keyCode == aEvent.DOM_VK_UP && richListBox.firstElementChild) {
if (
document
.getElementById("downloadsFooter")
.contains(document.activeElement)
) {
richListBox.selectedItem = richListBox.lastElementChild;
richListBox.focus();
aEvent.preventDefault();
return;
}
}
if (aEvent.keyCode == aEvent.DOM_VK_DOWN) {
// If the last element in the list is selected, or the footer is already
// focused, focus the footer.
if (
DownloadsView.canChangeSelectedItem &&
(richListBox.selectedItem === richListBox.lastElementChild ||
document
.getElementById("downloadsFooter")
.contains(document.activeElement))
) {
richListBox.selectedIndex = -1;
DownloadsFooter.focus();
aEvent.preventDefault();
return;
}
}
let pasting =
aEvent.keyCode == aEvent.DOM_VK_V && aEvent.getModifierState("Accel");
if (!pasting) {
return;
}
DownloadsCommon.log("Received a paste event.");
let trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(
Ci.nsITransferable
);
trans.init(null);
let flavors = ["text/x-moz-url", "text/plain"];
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;
}
let uri = NetUtil.newURI(url);
DownloadsCommon.log("Pasted URL seems valid. Starting download.");
DownloadURL(uri.spec, name, document);
} catch (ex) {}
},
_onSelect() {
let richlistbox = DownloadsView.richListBox;
richlistbox.itemChildren.forEach(item => {
let button = item.querySelector("button");
if (item.selected) {
button.removeAttribute("tabindex");
} else {
button.setAttribute("tabindex", -1);
}
});
},
/**
* Move focus to the main element in the downloads panel, unless another
* element in the panel is already focused.
*/
_focusPanel() {
// We may be invoked while the panel is still waiting to be shown.
if (this.panel.state != "open") {
return;
}
if (
document.activeElement &&
(this.panel.contains(document.activeElement) ||
this.panel.shadowRoot.contains(document.activeElement))
) {
return;
}
let focusOptions = {};
if (this._preventFocusRing) {
focusOptions.focusVisible = false;
}
if (DownloadsView.richListBox.itemCount > 0) {
if (DownloadsView.canChangeSelectedItem) {
DownloadsView.richListBox.selectedIndex = 0;
}
DownloadsView.richListBox.focus(focusOptions);
} else {
DownloadsFooter.focus(focusOptions);
}
},
_delayPopupItems() {
DownloadsView.richListBox.setAttribute("disabled", true);
this._startWatchingForSpammyDownloadActivation();
this._refreshDelayTimer();
},
_refreshDelayTimer() {
// If timeout already exists, overwrite it to avoid multiple timeouts.
if (this._delayTimeout) {
clearTimeout(this._delayTimeout);
}
let delay = Services.prefs.getIntPref("security.dialog_enable_delay");
this._delayTimeout = setTimeout(() => {
DownloadsView.richListBox.removeAttribute("disabled");
this._stopWatchingForSpammyDownloadActivation();
this._focusPanel();
this._delayTimeout = null;
}, delay);
},
_startWatchingForSpammyDownloadActivation() {
window.addEventListener("keydown", this, {
capture: true,
mozSystemGroup: true,
});
},
_lastBeepTime: 0,
_handlePotentiallySpammyDownloadActivation(aEvent) {
if (aEvent.key == "Enter" || aEvent.key == " ") {
// Throttle our beeping to a maximum of once per second, otherwise it
// appears on Win10 that beeps never make it through at all.
if (Date.now() - this._lastBeepTime > 1000) {
Cc["@mozilla.org/sound;1"].getService(Ci.nsISound).beep();
this._lastBeepTime = Date.now();
}
this._refreshDelayTimer();
}
},
_stopWatchingForSpammyDownloadActivation() {
window.removeEventListener("keydown", this, {
capture: true,
mozSystemGroup: true,
});
},
/**
* Opens the downloads panel when data is ready to be displayed.
*/
_openPopupIfDataReady() {
// We don't want to open the popup if we already displayed it, or if we are
// still loading data.
if (!this._waitingDataForOpen || DownloadsView.loading) {
return;
}
this._waitingDataForOpen = false;
// At this point, if the window is minimized, opening the panel could fail
// without any notification, and there would be no way to either open or
// close the panel any more. To prevent this, check if the window is
// minimized and in that case force the panel to the closed state.
if (window.windowState == window.STATE_MINIMIZED) {
return;
}
// Ensure the anchor is visible. If that is not possible, show the panel
// anchored to the top area of the window, near the default anchor position.
let anchor = DownloadsButton.getAnchor();
if (!anchor) {
DownloadsCommon.error("Downloads button cannot be found.");
return;
}
let onBookmarksToolbar = !!anchor.closest("#PersonalToolbar");
this.panel.classList.toggle("bookmarks-toolbar", onBookmarksToolbar);
// When the panel is opened, we check if the target files of visible items
// still exist, and update the allowed items interactions accordingly. We
// do these checks on a background thread, and don't prevent the panel to
// be displayed while these checks are being performed.
for (let viewItem of DownloadsView._visibleViewItems.values()) {
viewItem.download.refresh().catch(console.error);
}
DownloadsCommon.log("Opening downloads panel popup.");
// Delay displaying the panel because this function will sometimes be
// called while another window is closing (like the window for selecting
// whether to save or open the file), and that would cause the panel to
// close immediately.
setTimeout(() => {
PanelMultiView.openPopup(
this.panel,
anchor,
"bottomright topright",
0,
0,
false,
null
).then(() => {
if (!this._openedManually) {
this._delayPopupItems();
}
}, console.error);
}, 0);
},
};
XPCOMUtils.defineConstant(this, "DownloadsPanel", DownloadsPanel);
// DownloadsView
/**
* Builds and updates the downloads list widget, responding to changes in the
* download state and real-time data. In addition, handles part of the user
* interaction events raised by the downloads list widget.
*/
var DownloadsView = {
// Functions handling download items in the list
/**
* Maximum number of items shown by the list at any given time.
*/
kItemCountLimit: 5,
/**
* Indicates whether there is a DownloadsBlockedSubview open.
*/
subViewOpen: false,
/**
* Indicates whether we are still loading downloads data asynchronously.
*/
loading: false,
/**
* Ordered array of all Download objects. We need to keep this array because
* only a limited number of items are shown at once, and if an item that is
* currently visible is removed from the list, we might need to take another
* item from the array and make it appear at the bottom.
*/
_downloads: [],
/**
* Associates the visible Download objects with their corresponding
* DownloadsViewItem object. There is a limited number of view items in the
* panel at any given time.
*/
_visibleViewItems: new Map(),
/**
* Called when the number of items in the list changes.
*/
_itemCountChanged() {
DownloadsCommon.log(
"The downloads item count has changed - we are tracking",
this._downloads.length,
"downloads in total."
);
let count = this._downloads.length;
let hiddenCount = count - this.kItemCountLimit;
if (count > 0) {
DownloadsCommon.log(
"Setting the panel's hasdownloads attribute to true."
);
DownloadsPanel.panel.setAttribute("hasdownloads", "true");
} else {
DownloadsCommon.log("Removing the panel's hasdownloads attribute.");
DownloadsPanel.panel.removeAttribute("hasdownloads");
}
// If we've got some hidden downloads, we should activate the
// DownloadsSummary. The DownloadsSummary will determine whether or not
// it's appropriate to actually display the summary.
DownloadsSummary.active = hiddenCount > 0;
},
/**
* Element corresponding to the list of downloads.
*/
get richListBox() {
delete this.richListBox;
return (this.richListBox = document.getElementById("downloadsListBox"));
},
/**
* Element corresponding to the button for showing more downloads.
*/
get downloadsHistory() {
delete this.downloadsHistory;
return (this.downloadsHistory =
document.getElementById("downloadsHistory"));
},
// Callback functions from DownloadsData
/**
* Called before multiple downloads are about to be loaded.
*/
onDownloadBatchStarting() {
DownloadsCommon.log("onDownloadBatchStarting called for DownloadsView.");
this.loading = true;
},
/**
* Called after data loading finished.
*/
onDownloadBatchEnded() {
DownloadsCommon.log("onDownloadBatchEnded called for DownloadsView.");
this.loading = false;
// We suppressed item count change notifications during the batch load, at
// this point we should just call the function once.
this._itemCountChanged();
// Notify the panel that all the initially available downloads have been
// loaded. This ensures that the interface is visible, if still required.
DownloadsPanel.onViewLoadCompleted();
},
/**
* Called when a new download data item is available, either during the
* asynchronous data load or when a new download is started.
*
* @param aDownload
* Download object that was just added.
*/
onDownloadAdded(download) {
DownloadsCommon.log("A new download data item was added");
this._downloads.unshift(download);
// The newly added item is visible in the panel and we must add the
// corresponding element. If the list overflows, remove the last item from
// the panel to make room for the new one that we just added at the top.
this._addViewItem(download, true);
if (this._downloads.length > this.kItemCountLimit) {
this._removeViewItem(this._downloads[this.kItemCountLimit]);
}
// For better performance during batch loads, don't update the count for
// every item, because the interface won't be visible until load finishes.
if (!this.loading) {
this._itemCountChanged();
}
},
onDownloadChanged(download) {
let viewItem = this._visibleViewItems.get(download);
if (viewItem) {
viewItem.onChanged();
}
},
/**
* Called when a data item is removed. Ensures that the widget associated
* with the view item is removed from the user interface.
*
* @param download
* Download object that is being removed.
*/
onDownloadRemoved(download) {
DownloadsCommon.log("A download data item was removed.");
let itemIndex = this._downloads.indexOf(download);
this._downloads.splice(itemIndex, 1);
if (itemIndex < this.kItemCountLimit) {
// The item to remove is visible in the panel.
this._removeViewItem(download);
if (this._downloads.length >= this.kItemCountLimit) {
// Reinsert the next item into the panel.
this._addViewItem(this._downloads[this.kItemCountLimit - 1], false);
}
}
this._itemCountChanged();
},
/**
* Associates each richlistitem for a download with its corresponding
* DownloadsViewItem object.
*/
_itemsForElements: new Map(),
itemForElement(element) {
return this._itemsForElements.get(element);
},
/**
* Creates a new view item associated with the specified data item, and adds
* it to the top or the bottom of the list.
*/
_addViewItem(download, aNewest) {
DownloadsCommon.log(
"Adding a new DownloadsViewItem to the downloads list.",
"aNewest =",
aNewest
);
let element = document.createXULElement("richlistitem");
element.setAttribute("align", "center");
let viewItem = new DownloadsViewItem(download, element);
this._visibleViewItems.set(download, viewItem);
this._itemsForElements.set(element, viewItem);
if (aNewest) {
this.richListBox.insertBefore(
element,
this.richListBox.firstElementChild
);
} else {
this.richListBox.appendChild(element);
}
viewItem.ensureActive();
},
/**
* Removes the view item associated with the specified data item.
*/
_removeViewItem(download) {
DownloadsCommon.log(
"Removing a DownloadsViewItem from the downloads list."
);
let element = this._visibleViewItems.get(download).element;
let previousSelectedIndex = this.richListBox.selectedIndex;
this.richListBox.removeChild(element);
if (previousSelectedIndex != -1) {
this.richListBox.selectedIndex = Math.min(
previousSelectedIndex,
this.richListBox.itemCount - 1
);
}
this._visibleViewItems.delete(download);
this._itemsForElements.delete(element);
},
// User interface event functions
onDownloadClick(aEvent) {
// Handle primary clicks in the main area only:
if (aEvent.button == 0 && aEvent.target.closest(".downloadMainArea")) {
let target = aEvent.target;
while (target.nodeName != "richlistitem") {
target = target.parentNode;
}
let download = DownloadsView.itemForElement(target).download;
if (download.succeeded) {
download._launchedFromPanel = true;
}
let command = "downloadsCmd_open";
if (download.hasBlockedData) {
command = "downloadsCmd_showBlockedInfo";
} else if (aEvent.shiftKey || aEvent.ctrlKey || aEvent.metaKey) {
// We adjust the command for supported modifiers to suggest where the download
// may be opened
let openWhere = target.ownerGlobal.whereToOpenLink(aEvent, false, true);
if (["tab", "window", "tabshifted"].includes(openWhere)) {
command += ":" + openWhere;
}
}
// Toggle opening the file after the download has completed
if (!download.stopped && command.startsWith("downloadsCmd_open")) {
download.launchWhenSucceeded = !download.launchWhenSucceeded;
download._launchedFromPanel = download.launchWhenSucceeded;
}
DownloadsCommon.log("onDownloadClick, resolved command: ", command);
goDoCommand(command);
}
},
onDownloadButton(event) {
let target = event.target.closest("richlistitem");
DownloadsView.itemForElement(target).onButton();
},
/**
* Handles keypress events on a download item.
*/
onDownloadKeyPress(aEvent) {
// Pressing the key on buttons should not invoke the action because the
// event has already been handled by the button itself.
if (
aEvent.originalTarget.hasAttribute("command") ||
aEvent.originalTarget.hasAttribute("oncommand")
) {
return;
}
if (aEvent.charCode == " ".charCodeAt(0)) {
aEvent.preventDefault();
goDoCommand("downloadsCmd_pauseResume");
return;
}
if (aEvent.keyCode == KeyEvent.DOM_VK_RETURN) {
let readyToDownload = !DownloadsView.richListBox.disabled;
if (readyToDownload) {
goDoCommand("downloadsCmd_doDefault");
}
}
},
get contextMenu() {
let menu = document.getElementById("downloadsContextMenu");
if (menu) {
delete this.contextMenu;
this.contextMenu = menu;
}
return menu;
},
/**
* Indicates whether there is an open contextMenu for a download item.
*/
get contextMenuOpen() {
return this.contextMenu.state != "closed";
},
/**
* Whether it's possible to change the currently selected item.
*/
get canChangeSelectedItem() {
// When the context menu or a subview are open, the selected item should
// not change.
return !this.contextMenuOpen && !this.subViewOpen;
},
/**
* Mouse listeners to handle selection on hover.
*/
onDownloadMouseOver(aEvent) {
let item = aEvent.target.closest("richlistitem,richlistbox");
if (item.localName != "richlistitem") {
return;
}
if (aEvent.target.classList.contains("downloadButton")) {
item.classList.add("downloadHoveringButton");
}
item.classList.toggle(
"hoveringMainArea",
aEvent.target.closest(".downloadMainArea")
);
if (this.canChangeSelectedItem) {
this.richListBox.selectedItem = item;
}
},
onDownloadMouseOut(aEvent) {
let item = aEvent.target.closest("richlistitem,richlistbox");
if (item.localName != "richlistitem") {
return;
}
if (aEvent.target.classList.contains("downloadButton")) {
item.classList.remove("downloadHoveringButton");
}
// If the destination element is outside of the richlistitem, clear the
// selection.
if (this.canChangeSelectedItem && !item.contains(aEvent.relatedTarget)) {
this.richListBox.selectedIndex = -1;
}
},
onDownloadContextMenu(aEvent) {
let element = aEvent.originalTarget.closest("richlistitem");
if (!element) {
aEvent.preventDefault();
return;
}
// Ensure the selected item is the expected one, so commands and the
// context menu are updated appropriately.
this.richListBox.selectedItem = element;
DownloadsViewController.updateCommands();
DownloadsViewUI.updateContextMenuForElement(this.contextMenu, element);
// Hide the copy location item if there is somehow no URL. We have to do
// this here instead of in DownloadsViewUI because DownloadsPlacesView
// allows selecting multiple downloads, so in that view the menuitem will be
// shown according to whether at least one of the selected items has a URL.
this.contextMenu.querySelector(".downloadCopyLocationMenuItem").hidden =
!element._shell.download.source?.url;
},
onDownloadDragStart(aEvent) {
let element = aEvent.target.closest("richlistitem");
if (!element) {
return;
}
// We must check for existence synchronously because this is a DOM event.
let file = new FileUtils.File(
DownloadsView.itemForElement(element).download.target.path
);
if (!file.exists()) {
return;
}
let dataTransfer = aEvent.dataTransfer;
dataTransfer.mozSetDataAt("application/x-moz-file", file, 0);
dataTransfer.effectAllowed = "copyMove";
let spec = NetUtil.newURI(file).spec;
dataTransfer.setData("text/uri-list", spec);
dataTransfer.setData("text/plain", spec);
dataTransfer.addElement(element);
aEvent.stopPropagation();
},
};
XPCOMUtils.defineConstant(this, "DownloadsView", DownloadsView);
// DownloadsViewItem
/**
* Builds and updates a single item in the downloads list widget, responding to
* changes in the download state and real-time data, and handles the user
* interaction events related to a single item in the downloads list widgets.
*
* @param download
* Download object to be associated with the view item.
* @param aElement
* XUL element corresponding to the single download item in the view.
*/
class DownloadsViewItem extends DownloadsViewUI.DownloadElementShell {
constructor(download, aElement) {
super();
this.download = download;
this.element = aElement;
this.element._shell = this;
this.element.setAttribute("type", "download");
this.element.classList.add("download-state");
this.isPanel = true;
}
onChanged() {
let newState = DownloadsCommon.stateOfDownload(this.download);
if (this.downloadState !== newState) {
this.downloadState = newState;
this._updateState();
} else {
this._updateStateInner();
}
}
isCommandEnabled(aCommand) {
switch (aCommand) {
case "downloadsCmd_open":
case "downloadsCmd_open:current":
case "downloadsCmd_open:tab":
case "downloadsCmd_open:tabshifted":
case "downloadsCmd_open:window":
case "downloadsCmd_alwaysOpenSimilarFiles": {
if (!this.download.succeeded) {
return false;
}
let file = new FileUtils.File(this.download.target.path);
return file.exists();
}
case "downloadsCmd_show": {
let file = new FileUtils.File(this.download.target.path);
if (file.exists()) {
return true;
}
if (!this.download.target.partFilePath) {
return false;
}
let partFile = new FileUtils.File(this.download.target.partFilePath);
return partFile.exists();
}
case "downloadsCmd_copyLocation":
return !!this.download.source?.url;
case "cmd_delete":
case "downloadsCmd_doDefault":
return true;
case "downloadsCmd_showBlockedInfo":
return this.download.hasBlockedData;
}
return DownloadsViewUI.DownloadElementShell.prototype.isCommandEnabled.call(
this,
aCommand
);
}
doCommand(aCommand) {
if (this.isCommandEnabled(aCommand)) {
let [command, modifier] = aCommand.split(":");
// split off an optional command "modifier" into an argument,
// e.g. "downloadsCmd_open:window"
this[command](modifier);
}
}
// Item commands
downloadsCmd_unblock() {
DownloadsPanel.hidePanel();
this.confirmUnblock(window, "unblock");
}
downloadsCmd_chooseUnblock() {
DownloadsPanel.hidePanel();
this.confirmUnblock(window, "chooseUnblock");
}
downloadsCmd_unblockAndOpen() {
DownloadsPanel.hidePanel();
this.unblockAndOpenDownload().catch(console.error);
}
downloadsCmd_unblockAndSave() {
DownloadsPanel.hidePanel();
this.unblockAndSave();
}
downloadsCmd_open(openWhere) {
super.downloadsCmd_open(openWhere);
// We explicitly close the panel here to give the user the feedback that
// their click has been received, and we're handling the action.
// Otherwise, we'd have to wait for the file-type handler to execute
// before the panel would close. This also helps to prevent the user from
// accidentally opening a file several times.
DownloadsPanel.hidePanel();
}
downloadsCmd_openInSystemViewer() {
super.downloadsCmd_openInSystemViewer();
// We explicitly close the panel here to give the user the feedback that
// their click has been received, and we're handling the action.
DownloadsPanel.hidePanel();
}
downloadsCmd_alwaysOpenInSystemViewer() {
super.downloadsCmd_alwaysOpenInSystemViewer();
// We explicitly close the panel here to give the user the feedback that
// their click has been received, and we're handling the action.
DownloadsPanel.hidePanel();
}
downloadsCmd_alwaysOpenSimilarFiles() {
super.downloadsCmd_alwaysOpenSimilarFiles();
// We explicitly close the panel here to give the user the feedback that
// their click has been received, and we're handling the action.
DownloadsPanel.hidePanel();
}
downloadsCmd_show() {
let file = new FileUtils.File(this.download.target.path);
DownloadsCommon.showDownloadedFile(file);
// We explicitly close the panel here to give the user the feedback that
// their click has been received, and we're handling the action.
// Otherwise, we'd have to wait for the operating system file manager
// window to open before the panel closed. This also helps to prevent the
// user from opening the containing folder several times.
DownloadsPanel.hidePanel();
}
async downloadsCmd_deleteFile() {
await super.downloadsCmd_deleteFile();
// Protects against an unusual edge case where the user:
// 1) downloads a file with Firefox; 2) deletes the file from outside of Firefox, e.g., a file manager;
// 3) downloads the same file from the same source; 4) opens the downloads panel and uses the menuitem to delete one of those 2 files;
// Under those conditions, Firefox will make 2 view items even though there's only 1 file.
// Using this method will only delete the view item it was called on, because this instance is not aware of other view items with identical targets.
// So the remaining view item needs to be refreshed to hide the "Delete" option.
// That example only concerns 2 duplicate view items but you can have an arbitrary number, so iterate over all items...
for (let viewItem of DownloadsView._visibleViewItems.values()) {
viewItem.download.refresh().catch(console.error);
}
// Don't use DownloadsPanel.hidePanel for this method because it will remove
// the view item from the list, which is already sufficient feedback.
}
downloadsCmd_showBlockedInfo() {
DownloadsBlockedSubview.toggle(
this.element,
...this.rawBlockedTitleAndDetails
);
}
downloadsCmd_openReferrer() {
openURL(this.download.source.referrerInfo.originalReferrer);
}
downloadsCmd_copyLocation() {
DownloadsCommon.copyDownloadLink(this.download);
}
downloadsCmd_doDefault() {
let defaultCommand = this.currentDefaultCommandName;
if (defaultCommand && this.isCommandEnabled(defaultCommand)) {
this.doCommand(defaultCommand);
}
}
}
// DownloadsViewController
/**
* Handles part of the user interaction events raised by the downloads list
* widget, in particular the "commands" that apply to multiple items, and
* dispatches the commands that apply to individual items.
*/
var DownloadsViewController = {
// Initialization and termination
initialize() {
window.controllers.insertControllerAt(0, this);
},
terminate() {
window.controllers.removeController(this);
},
// nsIController
supportsCommand(aCommand) {
if (aCommand === "downloadsCmd_clearList") {
return true;
}
// Firstly, determine if this is a command that we can handle.
if (!DownloadsViewUI.isCommandName(aCommand)) {
return false;
}
// Strip off any :modifier suffix before checking if the command name is
// a method on our view
let [command] = aCommand.split(":");
if (!(command in this) && !(command in DownloadsViewItem.prototype)) {
return false;
}
// The currently supported commands depend on whether the blocked subview is
// showing. If it is, then take the following path.
if (DownloadsView.subViewOpen) {
let blockedSubviewCmds = [
"downloadsCmd_unblockAndOpen",
"cmd_delete",
"downloadsCmd_unblockAndSave",
];
return blockedSubviewCmds.includes(aCommand);
}
// If the blocked subview is not showing, then determine if focus is on a
// control in the downloads list.
let element = document.commandDispatcher.focusedElement;
while (element && element != DownloadsView.richListBox) {
element = element.parentNode;
}
// We should handle the command only if the downloads list is among the
// ancestors of the focused element.
return !!element;
},
isCommandEnabled(aCommand) {
// Handle commands that are not selection-specific.
if (aCommand == "downloadsCmd_clearList") {
return DownloadsCommon.getData(window).canRemoveFinished;
}
// Other commands are selection-specific.
let element = DownloadsView.richListBox.selectedItem;
return (
element &&
DownloadsView.itemForElement(element).isCommandEnabled(aCommand)
);
},
doCommand(aCommand) {
// If this command is not selection-specific, execute it.
if (aCommand in this) {
this[aCommand]();
return;
}
// Other commands are selection-specific.
let element = DownloadsView.richListBox.selectedItem;
if (element) {
// The doCommand function also checks if the command is enabled.
DownloadsView.itemForElement(element).doCommand(aCommand);
}
},
onEvent() {},
// Other functions
updateCommands() {
function updateCommandsForObject(object) {
for (let name in object) {
if (DownloadsViewUI.isCommandName(name)) {
goUpdateCommand(name);
}
}
}
updateCommandsForObject(this);
updateCommandsForObject(DownloadsViewItem.prototype);
},
// Selection-independent commands
downloadsCmd_clearList() {
DownloadsCommon.getData(window).removeFinished();
},
};
XPCOMUtils.defineConstant(
this,
"DownloadsViewController",
DownloadsViewController
);
// DownloadsSummary
/**
* Manages the summary at the bottom of the downloads panel list if the number
* of items in the list exceeds the panels limit.
*/
var DownloadsSummary = {
/**
* Sets the active state of the summary. When active, the summary subscribes
* to the DownloadsCommon DownloadsSummaryData singleton.
*
* @param aActive
* Set to true to activate the summary.
*/
set active(aActive) {
if (aActive == this._active || !this._summaryNode) {
return;
}
if (aActive) {
DownloadsCommon.getSummary(
window,
DownloadsView.kItemCountLimit
).refreshView(this);
} else {
DownloadsFooter.showingSummary = false;
}
this._active = aActive;
},
/**
* Returns the active state of the downloads summary.
*/
get active() {
return this._active;
},
_active: false,
/**
* Sets whether or not we show the progress bar.
*
* @param aShowingProgress
* True if we should show the progress bar.
*/
set showingProgress(aShowingProgress) {
if (aShowingProgress) {
this._summaryNode.setAttribute("inprogress", "true");
} else {
this._summaryNode.removeAttribute("inprogress");
}
// If progress isn't being shown, then we simply do not show the summary.
DownloadsFooter.showingSummary = aShowingProgress;
},
/**
* Sets the amount of progress that is visible in the progress bar.
*
* @param aValue
* A value between 0 and 100 to represent the progress of the
* summarized downloads.
*/
set percentComplete(aValue) {
if (this._progressNode) {
this._progressNode.setAttribute("value", aValue);
}
},
/**
* Sets the description for the download summary.
*
* @param aValue
* A string representing the description of the summarized
* downloads.
*/
set description(aValue) {
if (this._descriptionNode) {
this._descriptionNode.setAttribute("value", aValue);
this._descriptionNode.setAttribute("tooltiptext", aValue);
}
},
/**
* Sets the details for the download summary, such as the time remaining,
* the amount of bytes transferred, etc.
*
* @param aValue
* A string representing the details of the summarized
* downloads.
*/
set details(aValue) {
if (this._detailsNode) {
this._detailsNode.setAttribute("value", aValue);
this._detailsNode.setAttribute("tooltiptext", aValue);
}
},
/**
* Focuses the root element of the summary.
*/
focus(focusOptions) {
if (this._summaryNode) {
this._summaryNode.focus(focusOptions);
}
},
/**
* Respond to keydown events on the Downloads Summary node.
*
* @param aEvent
* The keydown event being handled.
*/
onKeyDown(aEvent) {
if (
aEvent.charCode == " ".charCodeAt(0) ||
aEvent.keyCode == KeyEvent.DOM_VK_RETURN
) {
DownloadsPanel.showDownloadsHistory();
}
},
/**
* Respond to click events on the Downloads Summary node.
*
* @param aEvent
* The click event being handled.
*/
onClick() {
DownloadsPanel.showDownloadsHistory();
},
/**
* Element corresponding to the root of the downloads summary.
*/
get _summaryNode() {
let node = document.getElementById("downloadsSummary");
if (!node) {
return null;
}
delete this._summaryNode;
return (this._summaryNode = node);
},
/**
* Element corresponding to the progress bar in the downloads summary.
*/
get _progressNode() {
let node = document.getElementById("downloadsSummaryProgress");
if (!node) {
return null;
}
delete this._progressNode;
return (this._progressNode = node);
},
/**
* Element corresponding to the main description of the downloads
* summary.
*/
get _descriptionNode() {
let node = document.getElementById("downloadsSummaryDescription");
if (!node) {
return null;
}
delete this._descriptionNode;
return (this._descriptionNode = node);
},
/**
* Element corresponding to the secondary description of the downloads
* summary.
*/
get _detailsNode() {
let node = document.getElementById("downloadsSummaryDetails");
if (!node) {
return null;
}
delete this._detailsNode;
return (this._detailsNode = node);
},
};
XPCOMUtils.defineConstant(this, "DownloadsSummary", DownloadsSummary);
// DownloadsFooter
/**
* Manages events sent to to the footer vbox, which contains both the
* DownloadsSummary as well as the "Show all downloads" button.
*/
var DownloadsFooter = {
/**
* Focuses the appropriate element within the footer. If the summary
* is visible, focus it. If not, focus the "Show all downloads"
* button.
*/
focus(focusOptions) {
if (this._showingSummary) {
DownloadsSummary.focus(focusOptions);
} else {
DownloadsView.downloadsHistory.focus(focusOptions);
}
},
_showingSummary: false,
/**
* Sets whether or not the Downloads Summary should be displayed in the
* footer. If not, the "Show all downloads" button is shown instead.
*/
set showingSummary(aValue) {
if (this._footerNode) {
if (aValue) {
this._footerNode.setAttribute("showingsummary", "true");
} else {
this._footerNode.removeAttribute("showingsummary");
}
this._showingSummary = aValue;
}
},
/**
* Element corresponding to the footer of the downloads panel.
*/
get _footerNode() {
let node = document.getElementById("downloadsFooter");
if (!node) {
return null;
}
delete this._footerNode;
return (this._footerNode = node);
},
};
XPCOMUtils.defineConstant(this, "DownloadsFooter", DownloadsFooter);
// DownloadsBlockedSubview
/**
* Manages the blocked subview that slides in when you click a blocked download.
*/
var DownloadsBlockedSubview = {
/**
* Elements in the subview.
*/
get elements() {
let idSuffixes = [
"title",
"details1",
"details2",
"unblockButton",
"deleteButton",
];
let elements = idSuffixes.reduce((memo, s) => {
memo[s] = document.getElementById("downloadsPanel-blockedSubview-" + s);
return memo;
}, {});
delete this.elements;
return (this.elements = elements);
},
/**
* The blocked-download richlistitem element that was clicked to show the
* subview. If the subview is not showing, this is undefined.
*/
element: undefined,
/**
* Slides in the blocked subview.
*
* @param element
* The blocked-download richlistitem element that was clicked.
* @param title
* The title to show in the subview.
* @param details
* An array of strings with information about the block.
*/
toggle(element, title, details) {
DownloadsView.subViewOpen = true;
DownloadsViewController.updateCommands();
const { download } = DownloadsView.itemForElement(element);
let e = this.elements;
let s = DownloadsCommon.strings;
title.l10n
? document.l10n.setAttributes(e.title, title.l10n.id, title.l10n.args)
: (e.title.textContent = title);
details[0].l10n
? document.l10n.setAttributes(
e.details1,
details[0].l10n.id,
details[0].l10n.args
)
: (e.details1.textContent = details[0]);
e.details2.textContent = details[1];
if (download.launchWhenSucceeded) {
e.unblockButton.label = s.unblockButtonOpen;
e.unblockButton.command = "downloadsCmd_unblockAndOpen";
} else {
e.unblockButton.label = s.unblockButtonUnblock;
e.unblockButton.command = "downloadsCmd_unblockAndSave";
}
e.deleteButton.label = s.unblockButtonConfirmBlock;
let verdict = element.getAttribute("verdict");
this.subview.setAttribute("verdict", verdict);
this.mainView.addEventListener("ViewShown", this);
DownloadsPanel.panel.addEventListener("popuphidden", this);
this.panelMultiView.showSubView(this.subview);
// Without this, the mainView is more narrow than the panel once all
// downloads are removed from the panel.
this.mainView.style.minWidth = window.getComputedStyle(this.subview).width;
},
handleEvent(event) {
// This is called when the main view is shown or the panel is hidden.
DownloadsView.subViewOpen = false;
this.mainView.removeEventListener("ViewShown", this);
DownloadsPanel.panel.removeEventListener("popuphidden", this);
// Focus the proper element if we're going back to the main panel.
if (event.type == "ViewShown") {
DownloadsPanel.showPanel();
}
},
/**
* Deletes the download and hides the entire panel.
*/
confirmBlock() {
goDoCommand("cmd_delete");
DownloadsPanel.hidePanel();
},
};
ChromeUtils.defineLazyGetter(DownloadsBlockedSubview, "panelMultiView", () =>
document.getElementById("downloadsPanel-multiView")
);
ChromeUtils.defineLazyGetter(DownloadsBlockedSubview, "mainView", () =>
document.getElementById("downloadsPanel-mainView")
);
ChromeUtils.defineLazyGetter(DownloadsBlockedSubview, "subview", () =>
document.getElementById("downloadsPanel-blockedSubview")
);
XPCOMUtils.defineConstant(
this,
"DownloadsBlockedSubview",
DownloadsBlockedSubview
);