This changes the LOG macro to be varadic removing the need for all
callsites to have double bracketing and allows for future improvement
on how we use the logging macros.
The callsites were changed with coccinelle and the changes checked by
hand. Compile tested for several frontends but not all.
A formatting annotation has also been added which allows the compiler
to check the parameters and types passed to the logging.
The cocoa frontend was directly acessing browser internals instead of
using the API. In the case of gui.m there was a check for the browser
window not being root (browser->parent != NULL) . As gui windows can
only ever be associated with the root brower window (i.e. its parent
will always be NULL) this was completely redundant.
By hiding all but the form selection menu option structure from code
outside of render this reduces the API to the absolute minimum to
support this feature.
Previously content handler debugging features were accessed by global
variables. This allows the setting of debugging parameters via a
content API giving per content control over debugging features.
Currently only used by the html content handler to toggle global
redraw debugging.
The frontends previously had to use an html renderer API to get the
encoding of a content. This also required the explicit checking of the
contents type rather than using the existing content API to abstract
this knowledge.
Update the API which allows frontends to acquire the page features
(images, link urls or form elements) present at the given coordinates
within a browser window.
By making this an explicit browser_window API and using the browser.h
header for the associated data structure with a more appropriate API
naming the usage is much more obvious and contained.
Additionally the link url is now passed around as a nsurl stopping it
being converted from nsurl to text and back again several times.
The browser window common initialisation code returns error codes which
were being ignored. The errors were additionally being reported via
warn_user in inappropriate places within browser history construction.
This allows creation of new browsing contents (browser/gui window) in a
tab but without explicitly providing a sibling browsing context to be
placed with.
