tree 3889e72ea7ce88986356c4f2f799d1d155a6d443
parent 44a8d89b0ca2e7b58e717c4b37cc78b4f08f4f2c
author wenson_hsieh@apple.com <wenson_hsieh@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1571281166 +0000
committer wenson_hsieh@apple.com <wenson_hsieh@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1571281166 +0000

[Clipboard API] [iOS] Refactor logic for suppressing URL data when the pasteboard may contain files
https://bugs.webkit.org/show_bug.cgi?id=203065

Reviewed by Tim Horton.

Platform-specific pasteboard refactoring before tackling webkit.org/b/203021. See below for details. No new
tests, as there is no change in behavior.

* platform/Pasteboard.h:
(WebCore::Pasteboard::changeCount const):

Add a stub for Pasteboard::changeCount() on non-Cocoa platforms.

* platform/ios/PlatformPasteboardIOS.mm:
(WebCore::safeTypeForDOMToReadAndWriteForPlatformType):

Move this helper function farther up the file, so it can be used in more places.

(WebCore::webSafeTypes):

Add a separate helper to compute the list of web-safe MIME types (for instance, "text/plain") given a list of
platform types, and a function to determine whether to avoid exposing a given URL to the DOM.

(WebCore::shouldTreatAtLeastOneTypeAsFile):

Split this out into a separate helper function, so that it can be invoked when determining whether a given
NSItemProvider is suspected to contain file paths. In the case where we're getting the full list of types that
are safe for the DOM to read, we want to pass in the entire pasteboard object and iterate through all of the
available types in search for something that could feasibly accompany a file URL.

In the case of computing the web-safe types per item, we only have an item provider, in which case we only
iterate through the types in that NSItemProvider. See call sites below for examples.

(WebCore::PlatformPasteboard::informationForItemAtIndex):

Invoke the new `webSafeTypes` helper method.

(WebCore::pasteboardMayContainFilePaths):
(WebCore::PlatformPasteboard::typesSafeForDOMToReadAndWrite const):

Invoke the new `webSafeTypes` helper method.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@251224 268f45cc-cd09-0410-ab3c-d52691b4dbfc