ShellTheme replaces both NbtkStyle and ccss_stylesheet_t.
The interface NbtkStylable is replaced by usage of ShellThemeNode.
A concrete node class allows some significant optimizations of property
inheritance that would have been much more difficult to achieve with
the highly abstract pair of NbtkStylable and ccss_node_t.
Some operations that were previously on NbtkStylable (like the
::style-changed signal) are directly on NtkWidget.
Custom properties are no longer registered as param-specs; instead you
call directly into shell theme node to look up a length or color:
shell_theme_node_get_length (theme_node, "border-spacing", FALSE, &spacing);
The dependency on libccss is dropped, while preserving all existing
functionality and adding proper parsing and inheritance of font properties
and proper inheritance for the 'color' property.
Some more javascript tests for CSS functionality are added; workarounds for
a CSS bug where *.some-class was needed instead of .some-class are removed.
js/ui/environment.js: Split out initial UI setup (Tweener initialization,
Nbtk monkey-patching) into a separate file we can import from tests.
tests/: Directory for various types of tests
tests/run-test.sh: Shell script that to run tests with an appropriate
environment set up.
tests/testcommon/: Common modules and data for tests
tests/interactive/: Interactive tests
tests/interactive/box-layout.js: A sample test of NbtkLayout
