403 lines
14 KiB
XML
403 lines
14 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="Object" category="Core" version="3.0-alpha">
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<brief_description>
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Base class for all non built-in types.
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</brief_description>
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<description>
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Base class for all non built-in types. Everything not a built-in type starts the inheritance chain from this class.
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Objects do not manage memory, if inheriting from one the object will most likely have to be deleted manually (call the [method free] function from the script or delete from C++).
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Some derivatives add memory management, such as [Reference] (which keeps a reference count and deletes itself automatically when no longer referenced) and [Node], which deletes the children tree when deleted.
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Objects export properties, which are mainly useful for storage and editing, but not really so much in programming. Properties are exported in [method _get_property_list] and handled in [method _get] and [method _set]. However, scripting languages and C++ have simpler means to export them.
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Objects also receive notifications ([method _notification]). Notifications are a simple way to notify the object about simple events, so they can all be handled together.
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</description>
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<tutorials>
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</tutorials>
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<demos>
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</demos>
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<methods>
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<method name="_get" qualifiers="virtual">
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<return type="void">
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</return>
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<argument index="0" name="property" type="String">
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</argument>
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<description>
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Returns the given property. Returns [code]null[/code] if the [code]property[/code] does not exist.
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</description>
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</method>
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<method name="_get_property_list" qualifiers="virtual">
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<return type="Array">
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</return>
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<description>
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Returns the object's property list as an [Array] of dictionaries. Dictionaries must contain: name:String, type:int (see TYPE_* enum in [@GlobalScope]) and optionally: hint:int (see PROPERTY_HINT_* in [@GlobalScope]), hint_string:String, usage:int (see PROPERTY_USAGE_* in [@GlobalScope]).
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</description>
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</method>
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<method name="_init" qualifiers="virtual">
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<return type="void">
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</return>
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<description>
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The virtual method called upon initialization.
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</description>
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</method>
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<method name="_notification" qualifiers="virtual">
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<return type="void">
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</return>
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<argument index="0" name="what" type="int">
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</argument>
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<description>
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Notify the object internally using an ID.
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</description>
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</method>
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<method name="_set" qualifiers="virtual">
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<return type="bool">
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</return>
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<argument index="0" name="property" type="String">
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</argument>
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<argument index="1" name="value" type="Variant">
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</argument>
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<description>
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Sets a property. Returns [code]true[/code] if the [code]property[/code] exists.
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</description>
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</method>
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<method name="add_user_signal">
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<return type="void">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<argument index="1" name="arguments" type="Array" default="[ ]">
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</argument>
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<description>
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Adds a user-defined [code]signal[/code]. Arguments are optional, but can be added as an [Array] of dictionaries, each containing "name" and "type" (from [@GlobalScope] TYPE_*).
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</description>
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</method>
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<method name="call" qualifiers="vararg">
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<return type="Variant">
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</return>
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<argument index="0" name="method" type="String">
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</argument>
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<description>
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Calls the [code]method[/code] on the object and returns a result. Pass parameters as a comma separated list.
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</description>
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</method>
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<method name="call_deferred" qualifiers="vararg">
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<return type="Variant">
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</return>
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<argument index="0" name="method" type="String">
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</argument>
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<description>
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Calls the [code]method[/code] on the object during idle time and returns a result. Pass parameters as a comma separated list.
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</description>
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</method>
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<method name="callv">
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<return type="Variant">
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</return>
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<argument index="0" name="method" type="String">
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</argument>
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<argument index="1" name="arg_array" type="Array">
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</argument>
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<description>
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Calls the [code]method[/code] on the object and returns a result. Pass parameters as an [Array].
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</description>
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</method>
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<method name="can_translate_messages" qualifiers="const">
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<return type="bool">
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</return>
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<description>
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Returns [code]true[/code] if the object can translate strings.
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</description>
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</method>
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<method name="connect">
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<return type="int" enum="Error">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<argument index="1" name="target" type="Object">
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</argument>
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<argument index="2" name="method" type="String">
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</argument>
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<argument index="3" name="binds" type="Array" default="[ ]">
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</argument>
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<argument index="4" name="flags" type="int" default="0">
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</argument>
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<description>
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Connects a [code]signal[/code] to a [code]method[/code] on a [code]target[/code] object. Pass optional [code]binds[/code] to the call. Use [code]flags[/code] to set deferred or one shot connections. See [code]CONNECT_*[/code] constants. A [code]signal[/code] can only be connected once to a [code]method[/code]. It will throw an error if already connected. To avoid this, first use [method is_connected] to check for existing connections.
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</description>
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</method>
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<method name="disconnect">
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<return type="void">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<argument index="1" name="target" type="Object">
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</argument>
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<argument index="2" name="method" type="String">
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</argument>
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<description>
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Disconnects a [code]signal[/code] from a [code]method[/code] on the given [code]target[/code].
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</description>
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</method>
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<method name="emit_signal" qualifiers="vararg">
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<return type="Variant">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<description>
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Emits the given [code]signal[/code].
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</description>
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</method>
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<method name="free">
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<return type="void">
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</return>
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<description>
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Deletes the object from memory.
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</description>
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</method>
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<method name="get" qualifiers="const">
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<return type="Variant">
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</return>
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<argument index="0" name="property" type="String">
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</argument>
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<description>
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Returns a [Variant] for a [code]property[/code].
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</description>
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</method>
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<method name="get_class" qualifiers="const">
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<return type="String">
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</return>
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<description>
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Returns the object's class as a [String].
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</description>
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</method>
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<method name="get_incoming_connections" qualifiers="const">
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<return type="Array">
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</return>
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<description>
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Returns an [Array] of dictionaries with information about signals that are connected to the object.
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Inside each [Dictionary] there are 3 fields:
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- "source" is a reference to signal emitter.
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- "signal_name" is name of connected signal.
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- "method_name" is a name of method to which signal is connected.
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</description>
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</method>
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<method name="get_instance_id" qualifiers="const">
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<return type="int">
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</return>
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<description>
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Returns the object's unique instance ID.
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</description>
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</method>
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<method name="get_meta" qualifiers="const">
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<return type="Variant">
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</return>
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<argument index="0" name="name" type="String">
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</argument>
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<description>
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Returns the object's metadata for the given [code]name[/code].
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</description>
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</method>
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<method name="get_meta_list" qualifiers="const">
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<return type="PoolStringArray">
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</return>
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<description>
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Returns the object's metadata as a [PoolStringArray].
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</description>
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</method>
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<method name="get_method_list" qualifiers="const">
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<return type="Array">
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</return>
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<description>
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Returns the object's methods and their signatures as an [Array].
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</description>
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</method>
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<method name="get_property_list" qualifiers="const">
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<return type="Array">
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</return>
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<description>
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Returns the list of properties as an [Array] of dictionaries. Dictionaries contain: name:String, type:int (see TYPE_* enum in [@GlobalScope]) and optionally: hint:int (see PROPERTY_HINT_* in [@GlobalScope]), hint_string:String, usage:int (see PROPERTY_USAGE_* in [@GlobalScope]).
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</description>
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</method>
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<method name="get_script" qualifiers="const">
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<return type="Reference">
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</return>
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<description>
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Returns the object's [Script] or [code]null[/code] if one doesn't exist.
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</description>
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</method>
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<method name="get_signal_connection_list" qualifiers="const">
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<return type="Array">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<description>
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Returns an [Array] of connections for the given [code]signal[/code].
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</description>
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</method>
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<method name="get_signal_list" qualifiers="const">
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<return type="Array">
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</return>
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<description>
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Returns the list of signals as an [Array] of dictionaries.
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</description>
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</method>
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<method name="has_meta" qualifiers="const">
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<return type="bool">
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</return>
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<argument index="0" name="name" type="String">
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</argument>
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<description>
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Returns [code]true[/code] if a metadata is found with the given [code]name[/code].
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</description>
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</method>
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<method name="has_method" qualifiers="const">
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<return type="bool">
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</return>
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<argument index="0" name="method" type="String">
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</argument>
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<description>
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Returns [code]true[/code] if the object contains the given [code]method[/code].
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</description>
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</method>
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<method name="has_user_signal" qualifiers="const">
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<return type="bool">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<description>
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Returns [code]true[/code] if the given user-defined [code]signal[/code] exists.
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</description>
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</method>
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<method name="is_blocking_signals" qualifiers="const">
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<return type="bool">
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</return>
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<description>
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Returns [code]true[/code] if signal emission blocking is enabled.
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</description>
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</method>
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<method name="is_class" qualifiers="const">
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<return type="bool">
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</return>
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<argument index="0" name="type" type="String">
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</argument>
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<description>
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Returns [code]true[/code] if the object inherits from the given [code]type[/code].
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</description>
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</method>
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<method name="is_connected" qualifiers="const">
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<return type="bool">
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</return>
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<argument index="0" name="signal" type="String">
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</argument>
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<argument index="1" name="target" type="Object">
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</argument>
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<argument index="2" name="method" type="String">
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</argument>
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<description>
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Returns [code]true[/code] if a connection exists for a given [code]signal[/code], [code]target[/code], and [code]method[/code].
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</description>
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</method>
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<method name="is_queued_for_deletion" qualifiers="const">
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<return type="bool">
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</return>
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<description>
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Returns [code]true[/code] if the [code]queue_free[/code] method was called for the object.
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</description>
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</method>
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<method name="notification">
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<return type="void">
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</return>
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<argument index="0" name="what" type="int">
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</argument>
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<argument index="1" name="reversed" type="bool" default="false">
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</argument>
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<description>
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Notify the object of something.
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</description>
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</method>
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<method name="property_list_changed_notify">
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<return type="void">
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</return>
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<description>
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</description>
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</method>
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<method name="set">
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<return type="void">
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</return>
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<argument index="0" name="property" type="String">
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</argument>
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<argument index="1" name="value" type="Variant">
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</argument>
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<description>
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Set property into the object.
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</description>
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</method>
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<method name="set_block_signals">
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<return type="void">
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</return>
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<argument index="0" name="enable" type="bool">
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</argument>
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<description>
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If set to true, signal emission is blocked.
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</description>
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</method>
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<method name="set_message_translation">
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<return type="void">
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</return>
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<argument index="0" name="enable" type="bool">
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</argument>
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<description>
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Define whether the object can translate strings (with calls to [method tr]). Default is true.
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</description>
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</method>
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<method name="set_meta">
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<return type="void">
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</return>
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<argument index="0" name="name" type="String">
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</argument>
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<argument index="1" name="value" type="Variant">
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</argument>
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<description>
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Set a metadata into the object. Metadata is serialized. Metadata can be [i]anything[/i].
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</description>
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</method>
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<method name="set_script">
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<return type="void">
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</return>
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<argument index="0" name="script" type="Reference">
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</argument>
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<description>
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Set a script into the object, scripts extend the object functionality.
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</description>
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</method>
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<method name="tr" qualifiers="const">
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<return type="String">
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</return>
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<argument index="0" name="message" type="String">
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</argument>
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<description>
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Translate a message. Only works if message translation is enabled (which it is by default). See [method set_message_translation].
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</description>
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</method>
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</methods>
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<signals>
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<signal name="script_changed">
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<description>
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</description>
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</signal>
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</signals>
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<constants>
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<constant name="NOTIFICATION_POSTINITIALIZE" value="0" enum="">
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Called right when the object is initialized. Not available in script.
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</constant>
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<constant name="NOTIFICATION_PREDELETE" value="1" enum="">
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Called before the object is about to be deleted.
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</constant>
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<constant name="CONNECT_DEFERRED" value="1">
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Connect a signal in deferred mode. This way, signal emissions are stored in a queue, then set on idle time.
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</constant>
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<constant name="CONNECT_PERSIST" value="2">
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Persisting connections are saved when the object is serialized to file.
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</constant>
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<constant name="CONNECT_ONESHOT" value="4">
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One shot connections disconnect themselves after emission.
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</constant>
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</constants>
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</class>
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