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[PALEMOON] Bug 1127867 - Use the new back-end property to get the size of downloads asynchronously

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This commit is contained in:
janekptacijarabaci 2018-07-29 12:41:33 +02:00 • committed by Roy Tam
commit 53aa070170
4 changed files with 79 additions and 120 deletions
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69
application/palemoon/components/downloads/content/allDownloadsViewOverlay.js
View file

@ -28,8 +28,14 @@ const DOWNLOAD_VIEW_SUPPORTED_COMMANDS =
*/
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 };
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.
@ -63,6 +69,10 @@ HistoryDownload.prototype = {
this.canceled = metaData.state == nsIDM.DOWNLOAD_CANCELED ||
metaData.state == nsIDM.DOWNLOAD_PAUSED;
this.endTime = metaData.endTime;
// 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;
} catch (ex) {
// Metadata might be missing from a download that has started but hasn't
@ -78,13 +88,11 @@ HistoryDownload.prototype = {
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;
// These properties may be updated if the user interface is refreshed.
this.exists = false;
this.target.size = undefined;
}
},
/**
@ -123,6 +131,20 @@ HistoryDownload.prototype = {
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;
}
}),
};
/**
@ -267,20 +289,8 @@ HistoryDownloadElementShell.prototype = {
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._sessionDownload && !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;
// 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) {
@ -290,13 +300,8 @@ HistoryDownloadElementShell.prototype = {
}
}
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;
// This property is false if the download did not succeed.
return this.download.target.exists;
case "downloadsCmd_pauseResume":
return this.download.hasPartialData && !this.download.error;
case "downloadsCmd_retry":
@ -430,7 +435,7 @@ HistoryDownloadElementShell.prototype = {
_checkTargetFileOnSelect: Task.async(function* () {
try {
this._targetFileExists = yield OS.File.exists(this.download.target.path);
yield this.download.refresh();
} finally {
// Do not try to check for existence again if this failed once.
this._targetFileChecked = true;
@ -440,6 +445,10 @@ HistoryDownloadElementShell.prototype = {
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();
}),
};

33
application/palemoon/components/downloads/content/downloads.js
View file

@ -555,7 +555,7 @@ const DownloadsPanel = {
// 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.verifyTargetExists();
viewItem.download.refresh().catch(Cu.reportError);
}
if (aAnchor) {
@ -1063,7 +1063,6 @@ function DownloadsViewItem(download, aElement) {
this.element.classList.add("download-state");
this._updateState();
this.verifyTargetExists();
}
DownloadsViewItem.prototype = {
@ -1078,41 +1077,11 @@ DownloadsViewItem.prototype = {
this.element.setAttribute("image", this.image);
this.element.setAttribute("state",
DownloadsCommon.stateOfDownload(this.download));
if (this.download.succeeded) {
// We assume the existence of the target of a download that just completed
// successfully, without checking the condition in the background. If the
// panel is already open, this will take effect immediately. If the panel
// is opened later, a new background existence check will be performed.
this.element.setAttribute("exists", "true");
}
},
onChanged() {
this._updateProgress();
},
/**
* Starts checking whether the target file of a finished download is still
* available on disk, and sets an attribute that controls how the item is
* presented visually.
*
* The existence check is executed on a background thread.
*/
verifyTargetExists: function DVI_verifyTargetExists() {
// We don't need to check if the download is not finished successfully.
if (!this.download.succeeded) {
return;
}
OS.File.exists(this.download.target.path).then(aExists => {
if (aExists) {
this.element.setAttribute("exists", "true");
} else {
this.element.removeAttribute("exists");
}
}).catch(Cu.reportError);
},
};
////////////////////////////////////////////////////////////////////////////////

28
application/palemoon/components/downloads/content/downloadsViewCommon.js
View file

@ -142,6 +142,15 @@ DownloadElementShell.prototype = {
* namely the progress bar and the status line.
*/
_updateProgress() {
if (this.download.succeeded) {
// We only need to add or remove this attribute for succeeded downloads.
if (this.download.target.exists) {
this.element.setAttribute("exists", "true");
} else {
this.element.removeAttribute("exists");
}
}
// The progress bar is only displayed for in-progress downloads.
if (this.download.hasProgress) {
this.element.setAttribute("progressmode", "normal");
@ -182,26 +191,26 @@ DownloadElementShell.prototype = {
let tip = "";
if (!this.download.stopped) {
let maxBytes = DownloadsCommon.maxBytesOfDownload(this.download);
let total = this.download.hasProgress ? this.download.totalBytes : -1;
// By default, extended status information including the individual
// download rate is displayed in the tooltip. The history view overrides
// the getter and displays the detials in the main area instead.
[text] = DownloadUtils.getDownloadStatusNoRate(
this.download.currentBytes,
maxBytes,
total,
this.download.speed,
this.lastEstimatedSecondsLeft);
let newEstimatedSecondsLeft;
[tip, newEstimatedSecondsLeft] = DownloadUtils.getDownloadStatus(
this.download.currentBytes,
maxBytes,
total,
this.download.speed,
this.lastEstimatedSecondsLeft);
this.lastEstimatedSecondsLeft = newEstimatedSecondsLeft;
} else if (this.download.canceled && this.download.hasPartialData) {
let maxBytes = DownloadsCommon.maxBytesOfDownload(this.download);
let total = this.download.hasProgress ? this.download.totalBytes : -1;
let transfer = DownloadUtils.getTransferTotal(this.download.currentBytes,
maxBytes);
total);
// We use the same XUL label to display both the state and the amount
// transferred, for example "Paused - 1.1 MB".
@ -213,12 +222,13 @@ DownloadElementShell.prototype = {
let stateLabel;
if (this.download.succeeded) {
// For completed downloads, show the file size (e.g. "1.5 MB")
let maxBytes = DownloadsCommon.maxBytesOfDownload(this.download);
if (maxBytes >= 0) {
let [size, unit] = DownloadUtils.convertByteUnits(maxBytes);
// For completed downloads, show the file size (e.g. "1.5 MB").
if (this.download.target.size !== undefined) {
let [size, unit] = DownloadUtils.convertByteUnits(
this.download.target.size);
stateLabel = s.sizeWithUnits(size, unit);
} else {
// History downloads may not have a size defined.
stateLabel = s.sizeUnknown;
}
} else if (this.download.canceled) {