Bartosz Dziewoński has uploaded a new change for review.
https://gerrit.wikimedia.org/r/277714
Change subject: mw.UploadWizardUpload: Disentangle JPEG metadata from filling
uploads
......................................................................
mw.UploadWizardUpload: Disentangle JPEG metadata from filling uploads
As far as I can tell (it's hard to tell because it's entangled), we
only use this to render the thumbnails with the right rotation and
aspect ratio. So let's just do it as part of the thumbnail generation.
This should let us make other stuff less horrible. In particular, this
means that the this.uploads array now holds uploads in the same order
in which they were created (and in which they're shown in the interface),
which in turn results in UW uploading files in the same order, and
which allows us to remove some crappy sorting from elsewhere (added in
a37bba8dbc2e87b108c7e22c7ef0dabe847f07c5).
Change-Id: Ie9c0098074320a1fb9e63acab5672965f37a4700
---
M resources/controller/uw.controller.Step.js
M resources/mw.UploadWizardUpload.js
2 files changed, 56 insertions(+), 63 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/UploadWizard
refs/changes/14/277714/1
diff --git a/resources/controller/uw.controller.Step.js
b/resources/controller/uw.controller.Step.js
index c1fbef6..64804b1 100644
--- a/resources/controller/uw.controller.Step.js
+++ b/resources/controller/uw.controller.Step.js
@@ -88,18 +88,6 @@
this.uploads = uploads || [];
- // Keep the uploads sorted in the order they were created in
initially.
- this.uploads = this.uploads.sort( function ( uploadA, uploadB )
{
- // Can the uploads be undefined? Code below would imply
they can, no idea how.
- if ( !uploadA ) {
- return 1;
- }
- if ( !uploadB ) {
- return -1;
- }
- return uploadA.index - uploadB.index;
- } );
-
$.each( this.uploads, function ( i, upload ) {
if ( upload !== undefined ) {
upload.state = step.stepName;
diff --git a/resources/mw.UploadWizardUpload.js
b/resources/mw.UploadWizardUpload.js
index 907bebf..2c7ef79 100644
--- a/resources/mw.UploadWizardUpload.js
+++ b/resources/mw.UploadWizardUpload.js
@@ -463,55 +463,8 @@
this.imageinfo = {};
}
this.filename = filename;
-
- // For JPEGs, we use the JsJpegMeta
library in core to extract metadata,
- // including EXIF tags. This is done
asynchronously once each file has been
- // read. Only then is the file properly
added to UploadWizard via fileChangedOk().
- //
- // For all other file types, we don't
need or want to run this.
- //
- // TODO: This should be refactored.
-
- if ( this.file.type === 'image/jpeg' ) {
- binReader = new FileReader();
- binReader.onload = function () {
- var binStr, arr, i,
meta;
- if ( typeof
binReader.result === 'string' ) {
- binStr =
binReader.result;
- } else {
- // Array
buffer; convert to binary string for the library.
- arr = new
Uint8Array( binReader.result );
- binStr = '';
- for ( i = 0; i
< arr.byteLength; i++ ) {
- binStr
+= String.fromCharCode( arr[ i ] );
- }
- }
- try {
- meta =
mw.libs.jpegmeta( binStr, upload.file.fileName );
- // jscs:disable
requireCamelCaseOrUpperCaseIdentifiers, disallowDanglingUnderscores
-
meta._binary_data = null;
- // jscs:enable
- } catch ( e ) {
- meta = null;
- }
-
upload.extractMetadataFromJpegMeta( meta );
- upload.filename =
filename;
- if ( upload.hasError
=== false ) {
-
finishCallback();
- }
- };
- if ( 'readAsBinaryString' in
binReader ) {
-
binReader.readAsBinaryString( upload.file );
- } else if ( 'readAsArrayBuffer'
in binReader ) {
-
binReader.readAsArrayBuffer( upload.file );
- } else {
- // We should never get
here. :P
- throw new Error(
'Cannot read thumbnail as binary string or array buffer.' );
- }
- } else {
- if ( this.hasError === false ) {
- finishCallback();
- }
+ if ( this.hasError === false ) {
+ finishCallback();
}
} else {
@@ -551,11 +504,62 @@
};
/**
+ * Extract some JPEG metadata that we need to render thumbnails (EXIF
rotation mostly).
+ *
+ * For JPEGs, we use the JsJpegMeta library in core to extract metadata,
+ * including EXIF tags. This is done asynchronously once each file has
been
+ * read.
+ *
+ * For all other file types, we don't need or want to run this, and
this function does nothing.
+ *
+ * @return {jQuery.Promise} A promise, resolved when we're done
+ */
+ mw.UploadWizardUpload.prototype.extractMetadataFromJpegMeta = function
() {
+ var binReader,
+ deferred = $.Deferred(),
+ upload = this;
+ if ( this.file.type === 'image/jpeg' ) {
+ binReader = new FileReader();
+ binReader.onload = function () {
+ var binStr, arr, i, meta;
+ if ( typeof binReader.result === 'string' ) {
+ binStr = binReader.result;
+ } else {
+ // Array buffer; convert to binary
string for the library.
+ arr = new Uint8Array( binReader.result
);
+ binStr = '';
+ for ( i = 0; i < arr.byteLength; i++ ) {
+ binStr += String.fromCharCode(
arr[ i ] );
+ }
+ }
+ try {
+ meta = mw.libs.jpegmeta( binStr,
upload.file.fileName );
+ // jscs:disable
requireCamelCaseOrUpperCaseIdentifiers, disallowDanglingUnderscores
+ meta._binary_data = null;
+ // jscs:enable
+ } catch ( e ) {
+ meta = null;
+ }
+ upload.extractMetadataFromJpegMetaCallback(
meta );
+ deferred.resolve();
+ };
+ if ( 'readAsBinaryString' in binReader ) {
+ binReader.readAsBinaryString( upload.file );
+ } else if ( 'readAsArrayBuffer' in binReader ) {
+ binReader.readAsArrayBuffer( upload.file );
+ }
+ } else {
+ deferred.resolve();
+ }
+ return deferred.promise();
+ };
+
+ /**
* Map fields from jpegmeta's metadata return into our format (which is
more like the imageinfo returned from the API
*
* @param {Object} meta As returned by jpegmeta
*/
- mw.UploadWizardUpload.prototype.extractMetadataFromJpegMeta = function
( meta ) {
+ mw.UploadWizardUpload.prototype.extractMetadataFromJpegMetaCallback =
function ( meta ) {
var pixelHeightDim, pixelWidthDim, degrees;
if ( meta !== undefined && meta !== null && typeof meta ===
'object' ) {
@@ -1061,7 +1065,8 @@
deferred.resolve( image );
}
- this.makePreview()
+ this.extractMetadataFromJpegMeta()
+ .then( upload.makePreview.bind( upload ) )
.done( imageCallback )
.fail( function () {
// Can't generate the thumbnail locally, get
the thumbnail via API after
--
To view, visit https://gerrit.wikimedia.org/r/277714
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie9c0098074320a1fb9e63acab5672965f37a4700
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/extensions/UploadWizard
Gerrit-Branch: master
Gerrit-Owner: Bartosz Dziewoński <[email protected]>
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