forked from AuroraMiddleware/gtk
08e15bbbae
2006-11-26 Ryan Lortie <desrt@desrt.ca> * docs/reference/gtk/tmpl/gtkbuildable.sgml: add clarification stating that the construct_child function is responsible for returning a reference. * gtkbuilder.c (_gtk_builder_construct): remove g_object_ref() for objects from constructors * gtkuimanager.c (gtk_ui_manager_buildable_construct_child): add g_object_ref() to this construction function (it's the only implementer in GTK) Fixes #496645. svn path=/trunk/; revision=19075
196 lines
4.9 KiB
Plaintext
196 lines
4.9 KiB
Plaintext
<!-- ##### SECTION Title ##### -->
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GtkBuildable
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<!-- ##### SECTION Short_Description ##### -->
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Interface for objects that can be built by GtkBuilder
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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In order to allow construction from a <link linkend="BUILDER-UI">GtkBuilder
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UI description</link>, an object class must implement the
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GtkBuildable interface. The interface includes methods for setting
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names and properties of objects, parsing custom tags, constructing
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child objects.
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</para>
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<para>
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The GtkBuildable interface is implemented by all widgets and
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many of the non-widget objects that are provided by GTK+. The
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main user of this interface is #GtkBuilder, there should be
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very little need for applications to call any
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<function>gtk_buildable_...</function> functions.
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</para>
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<!-- ##### SECTION See_Also ##### -->
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<!-- ##### SECTION Stability_Level ##### -->
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<!-- ##### STRUCT GtkBuildable ##### -->
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<para>
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</para>
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<!-- ##### STRUCT GtkBuildableIface ##### -->
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<para>
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The GtkBuildableIface interface contains method that are
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necessary to allow #GtkBuilder to construct an object from
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a GtkBuilder UI definition.
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</para>
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@g_iface: the parent class
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@set_name: Stores the name attribute given in the GtkBuilder UI definition.
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#GtkWidget maps this to the #GtkWidget:name property, and
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gtk_buildable_set_name() has a fallback implementation that stores
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the name as object data. Implement this method if your object
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has some notion of "name" and it makes sense to map the XML name
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attribute to it.
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@get_name: The getter corresponding to @set_name. Implement this
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if you implement @set_name.
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@add_child: Adds a child. The @type parameter can be used to
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differentiate the kind of child. #GtkContainer implements this
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to add add a child widget to the container, #GtkNotebook uses
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the @type to distinguish between page labels (of type "page-label")
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and normal children.
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@set_buildable_property: Sets a property of a buildable object.
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It is normally not necessary to implement this, g_object_set_property()
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is used by default. #GtkWindow implements this to delay showing itself
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(i.e. setting the #GtkWidget:visible property) until the whole interface
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is created.
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@construct_child: Constructs a child of a buildable that has been
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specified as "constructor" in the UI definition. #GtkUIManager implements
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this to reference to a widget created in a <ui> tag which is outside
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of the normal GtkBuilder UI definition hierarchy. A reference to the
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constructed object is returned and becomes owned by the caller.
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@custom_tag_start: Implement this if the buildable needs to parse
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content below <child>. To handle an element, the implementation
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must fill in the @parser structure and @user_data and return %TRUE.
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#GtkWidget implements this to parse keyboard accelerators specified
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in <accelerator> elements. #GtkContainer implements it to map
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properties defined via <packing> elements to child properties.
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Note that @user_data must be freed in @custom_tag_end or @custom_finished.
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@custom_tag_end: Called for the end tag of each custom element that is
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handled by the buildable (see @custom_tag_start).
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@custom_finished: Called for each custom tag handled by the buildable
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when the builder finishes parsing (see @custom_tag_start)
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@parser_finished: Called when a builder finishes the parsing
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of a UI definition. It is normally not necessary to implement this,
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unless you need to perform special cleanup actions. #GtkWindow sets
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the #GtkWidget:visible property here.
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@get_internal_child: Returns an internal child of a buildable.
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#GtkDialog implements this to give access to its @vbox, making
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it possible to add children to the vbox in a UI definition.
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Implement this if the buildable has internal children that may
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need to be accessed from a UI definition.
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<!-- ##### FUNCTION gtk_buildable_set_name ##### -->
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<para>
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</para>
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@buildable:
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@name:
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<!-- ##### FUNCTION gtk_buildable_get_name ##### -->
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<para>
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</para>
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@buildable:
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@Returns:
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<!-- ##### FUNCTION gtk_buildable_add_child ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@child:
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@type:
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<!-- ##### FUNCTION gtk_buildable_set_buildable_property ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@name:
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@value:
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<!-- ##### FUNCTION gtk_buildable_construct_child ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@name:
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@Returns:
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<!-- ##### FUNCTION gtk_buildable_custom_tag_start ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@child:
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@tagname:
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@parser:
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@data:
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@Returns:
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<!-- ##### FUNCTION gtk_buildable_custom_tag_end ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@child:
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@tagname:
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@data:
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<!-- ##### FUNCTION gtk_buildable_custom_finished ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@child:
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@tagname:
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@data:
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<!-- ##### FUNCTION gtk_buildable_parser_finished ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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<!-- ##### FUNCTION gtk_buildable_get_internal_child ##### -->
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<para>
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</para>
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@buildable:
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@builder:
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@childname:
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@Returns:
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