Move inline event handlers to viewer.js to comply with a
Content-Security-Policy where directive "unsafe-inline" is not set.
Change textarea.rows = <number of newlines> to
textarea.style.height = textarea.scrollHeight.
(The former is extremely unreliable; consider long lines...)
Sometimes, the viewer did not render for PDF files in an iframe,
because document.readyState not reaching "complete".
Deferring window.stop() until the root element is placed in the
document fixes the problem (typically a few ten milliseconds).
A user reported that the PDF Viewer is not rendered on Dropbox,
(Chrome on Mac OS X). This is apparently caused by the fact that the
PDF file is loaded in an iframe in such a way that the tabs.onUpdated
event is not triggered.
This patch switches to the webNavigation event API, which improves the
reliability of the navigation detection.
Unfortunately Opera 15 does not support the webNavigation API, so the
old (tabs.onUpdated) method is used (feature-detection is used, so
whenever Opera decides to implement this API, it will profit from it).
Two major issues:
1. Border/shadow around every page. Removed by adding "border:none".
2. Added "overflow:visible" (overrides "overflow:auto") in #viewContainer.
This solves two problems:
- It prevents scrollbars from appearing.
- Every "page" is automatically resized to fit on a printed page,
just like the Firefox.
To see what's wrong, here's a picture of how PDF.js rendered the pdf in
Chrome (using "Print to PDF" feature of Chrome):
https://robwu.nl/pdfjs/pdfjs-print-with-chromium-28.pdf
Successfully tested with Chrome 28 and Firefox 22.
Solves #3445
Declares the URL variable globally. If the feature is not
supported, the variable will still be declared, but have the
"undefined" value.
Supported by:
- Firefox 4
Firefox 21 in Web worker
- Chrome 8 (prefixed as webkitURL), 23+ unprefixed
Chrome 10 (prefixed as webkitURL) in Web Worker, 23+ unprefixed
- Opera 15
Opera 15 in Web Worker
- Internet Explorer 10
Internet Explorer 11 in Web Worker
- Safari 6 (prefixed as webkitURL)
Safari 6 (prefixed as webkitURL) in Web Worker
This feature relies on URL.createObjectURL, which is supported by
- Firefox 4
- Chrome 8
- Opera 15
- Internet Explorer 10
If the feature is missing, it falls back to downloading from the server.
The environment-specific code are put in ifdef's. Two methods are
defined:
- noData
This function is used as a fallback in case of failure, it triggers
a download directly from the server.
- triggerSaveAs(String url, optional String blob)
This function attempts to show a Save As dialog for a given URL.
It attempts to use the a.download attribute, if available, and
falls back to window.open(<url>, '_parent') if unavailable.
See also http://caniuse.com/download
