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https://github.com/netsurf-browser/netsurf
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add initial javascript binding documentation
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Vincent Sanders
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docs/jsbinding.md
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59
docs/jsbinding.md
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Javascript bindings
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===================
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In order for javascript programs to to interact with the page contents
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it must use the Document Object Model (DOM) and Cascading Style Sheet
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Object Model (CSSOM) API.
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These interfaces are described using web Interface Description
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Language (IDL) within the relevant specifications
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(e.g. https://dom.spec.whatwg.org/).
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Each interface described by the webIDL must be bound (connected) to
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the browsers internal representation for the DOM or CSS, etc. These
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bindings desciptions are processed together with the WebIDL by the
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nsgenbind tool to generate source code.
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A list of [DOM and CSSOM methods](unimplemented.html) is available
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outlining the remaining unimplemented API bindings.
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WebIDL
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------
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The WebIDL specification defines the interface description language used.
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These descriptions should be periodicaly updated to keep the browser
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interfaces current.
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There is a content/handlers/javascript/WebIDL/Makefile which attempts
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to automaticaly update the IDL files by scraping the web specs.
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This tool needs a great deal of hand holding, not least because many of the
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source documents list the IDL fragments multiple times, some even have
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appendicies with the entrire IDL repeated.
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Interface binding introduction
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------------------------------
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The binding files are processed by the nsgenbind tool to generate c
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source code which implements the interfaces within the javascript
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engine.
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The bindings are specific to a javascript engine, the DOM library, the
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CSS library and the browser. In this case that is the tuple of
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duktape, libdom, libcss and NetSurf.
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In principle other engines or libraries could be substituted
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(historicaly NetSurf unsucessfully tried to use spidermonkey) but the
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engineering to do so is formidable.
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The bindings are kept the sorce rpository within the duktape
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javascript handler content/handlers/javascript/duktape/
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The root binding which contains all the interfaces initroduced into
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the javascript programs initial execution context is nesurf.bnd this
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references all the WebIDL to be bound and includes all additional
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binding definitions to implement the interfaces.
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The bindings are a Domain Specific Language (DSL) which allows
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implementations to be added to each WebIDL method.
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189
docs/mainpage.md
189
docs/mainpage.md
@ -3,25 +3,123 @@ NetSurf web browser
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[*](https://bestpractices.coreinfrastructure.org/projects/1037)
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The NetSurf code makes use of Doxygen for code documentation.
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# User Interface
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User Interface
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--------------
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Netsurf is divided into a series of frontends which provide a user
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interface around common core functionality. Each frontend is a
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distinct implementation for a specific GUI toolkit.
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There are some basic user guides for the
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[framebuffer](docs/using-framebuffer.md) and
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[monkey](docs/using-monkey.md) frontends.
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Because of this the user interface has different features in
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each frontend allowing the browser to be a native application.
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The [core user options](docs/netsurf-options.md) of the browser are
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documented which are augmented by each frontend in a specific manner.
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## Frontends
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### Logging
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As GUI toolkits are often applicable to a single Operating
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System (OS) some frontends are named for their OS instead of the
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toolkit e.g. RISC OS WIMP frontend is named riscos and the Windows
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win32 frontend is named windows.
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### amiga
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Frontend specific to the amiga
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### atari
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Frontend specific to the atari
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### beos
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Frontend specific to the Haiku OS
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### framebuffer
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There is a basic user guide for the[framebuffer](docs/using-framebuffer.md)
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### gtk
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Frontend that uses the GTK+2 or GTK+3 toolkit
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### monkey
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This is the internal unit test frontend.
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There is a basic user guide [monkey](docs/using-monkey.md)
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### riscos
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Frontend for the RISC OS WIMP toolkit.
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### windows
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Frontend which uses the Microsodt win32 GDI toolkit.
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## User configuration
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The behaviour of the browser can be changed from the defaults with a
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configuration file. The [core user options](docs/netsurf-options.md)
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of the browser are common to all versions and are augmented by each
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frontend in a specific manner.
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# Development
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## Working with the team
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Generally it is sensible to check with the other developers if you are
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planning to make a change to NetSurf intended to be merged.
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We are often about on the IRC channel but failing that the developer
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mailing list is a good place to try.
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All the project sources are held in [public git repositories](http://source.netsurf-browser.org/)
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## Compilation environment
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Compiling a development edition of NetSurf requires a POSIX style
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environment. Typically this means a Linux based system although Free
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BSD, Open BSD, Mac OS X and Haiku all known to work.
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## Toolchains
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Compilation for non POSIX toolkits/frontends (e.g. RISC OS) generally
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relies upon a cross compilation environment which is generated using
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the makefiles found in our
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[toolchains](http://source.netsurf-browser.org/toolchains.git/)
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repository. These toolchains are built by the Continuous Integration
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(CI) system and the
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[results of the system](http://ci.netsurf-browser.org/builds/toolchains/)
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are published as a convenience.
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## Quick setup
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The [quick start guide](docs/quick-start.md) can be used to get a
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development environment setup quickly and uses the
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[env.sh](env_8sh_source.html) script the core team utilises.
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## Manual setup
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The Manual environment setup and compilation method is covered by the
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details in the [netsurf libraries](docs/netsurf-libraries.md) document
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for the core libraries and then one of the building documents for the
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specific frontend.
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- [Amiga Os cross](docs/building-AmigaCross.md) and [Amiga OS](docs/building-AmigaOS.md)
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- [Framebuffer](docs/building-Framebuffer.md)
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- [GTK](docs/building-GTK.md)
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- [Haiku (BeOS)](docs/building-Haiku.md)
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- [Windows Win32](docs/building-Windows.md)
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These documents are sometimes not completely up to
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date and the env.sh script should be considered canonical.
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## Logging
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The [logging](docs/logging.md) interface controls debug and error
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messages not output through the GUI.
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Documented API
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--------------
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## Documented API
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The NetSurf code makes use of Doxygen for code documentation.
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There are several documents which detail specific aspects of the
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codebase and APIs.
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@ -39,60 +137,29 @@ provides a way for downloaded content to be kept on a persistent
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storage medium such as hard disc to make future retrieval of that
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content quickly.
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### Javascript
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## Javascript
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JavaScript is provided by integrating the duktape library. There are [instructions](docs/updating-duktape.md) on how to update the library.
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Javascript provision is split into four parts:
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- An engine that takes source code and executes it.
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- Interfaces between the program and the web page.
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- Browser support to retrive and manage the source code to be executed.
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- Browser support for the dispatch of events from user interface.
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A list of [unimplemented DOM and CSSOM methods](unimplemented.html)
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is available outlining the remaining API that have to be implemented.
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### Library
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Development
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-----------
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JavaScript is provided by integrating the duktape library. There are
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[instructions](docs/updating-duktape.md) on how to update the library.
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Compiling a development edition of NetSurf requires a POSIX style
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environment. Typically this means a Linux based system although Free
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BSD, Open BSD, Mac OS X and Haiku all known to work.
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### Interface binding
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### Working with the team
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In order for javascript programs to to interact with the page contents
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it must use the Document Object Model (DOM) and Cascading Style Sheet
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Object Model (CSSOM) API.
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Generally it is sensible to check with the other developers if you are
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planning to make a change to NetSurf intended to be merged.
|
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We are often about on the IRC channel but failing that the developer
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mailing list is a good place to try.
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All the project sources are held in [public git repositories](http://source.netsurf-browser.org/)
|
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|
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### Toolchains
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Compilation for non POSIX toolkits/frontends (e.g. RISC OS) generally
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relies upon a cross compilation environment which is generated using
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the makefiles found in our
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[toolchains](http://source.netsurf-browser.org/toolchains.git/)
|
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repository. These toolchains are built by the Continuous Integration
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(CI) system and the
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[results of the system](http://ci.netsurf-browser.org/builds/toolchains/)
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are published as a convenience.
|
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|
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### Quick setup
|
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|
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The [quick start guide](docs/quick-start.md) can be used to get a
|
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development environment setup quickly and uses the
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[env.sh](env_8sh_source.html) script the core team utilises.
|
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|
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### Manual setup
|
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|
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The Manual environment setup and compilation method is covered by the
|
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details in the [netsurf libraries](docs/netsurf-libraries.md) document
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for the core libraries and then one of the building documents for the
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specific frontend.
|
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|
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- [Amiga Os cross](docs/building-AmigaCross.md) and [Amiga OS](docs/building-AmigaOS.md)
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- [Framebuffer](docs/building-Framebuffer.md)
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- [GTK](docs/building-GTK.md)
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- [Haiku (BeOS)](docs/building-Haiku.md)
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- [Windows Win32](docs/building-Windows.md)
|
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|
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These documents are sometimes not completely up to
|
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date and the env.sh script should be considered canonical.
|
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These interfaces are described using web Interface Description
|
||||
Language (IDL) within the relevant specifications
|
||||
(e.g. https://dom.spec.whatwg.org/).
|
||||
|
||||
Each interface described by the webIDL must be bound (connected) to
|
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the browsers internal representation for the DOM or CSS, etc. The
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process of [writing bindings](docs/jsbinding.md) is ongoing.
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||||
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