Unigine::Properties Class

Header:

#include <UnigineProperties.h>

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List of functions:

List of Variables:

CALLBACK_CREATED
CALLBACK_MOVED
CALLBACK_REMOVED
CALLBACK_RENAMED
CALLBACK_REPARENTED

The functions below are used to control property loading and management within the project: you can get, clone, inherit, or remove any property within the project. Reparenting is supported for all non-manual and editable properties.

You can also use callbacks to handle such events.

Notice

This class is a singleton.
To modify a single property, use functions of the Property class.

Adding Callbacks

You can add callbacks to track any changes made to any property and perform certain actions. The signature of the callback function must be as follows:

Source code (C++)

void callback_function_name(PropertyPtr property);

Here is an example of tracking property removal via callbacks:

Source code (C++)

void property_removed(PropertyPtr property)
{
	Log::message("Property \"%s\" was removed.\n", property->getName());
    // ...
}

// somewhere in the code

Properties *properties = Properties::get();

// inheriting a new property named "my_prop" from the base property "surface_base"
PropertyPtr property = Properties::get()->findManualProperty("surface_base")->inherit("my_prop");

// setting our callback function on property removal
properties->addCallback(Property::CALLBACK_REMOVED, MakeCallback(property_removed));

// removing the property named "my_prop"
properties->removeProperty(properties->findProperty("my_prop")->getGUID());

Properties Class

Members

Properties * get()

Returns a pointer to the existing property manager. The pointer to the property manager must be obtained to access functions of the Properties class:

Source code (C++)

Properties *properties = Properties::get();
// access functions of the Properties class
...

Return value

Pointer to the existing property manager.

int getNumProperties()

Returns the total number of properties loaded for the current project.

Return value

Total number of properties loaded.

Ptr<Property> getProperty(int num)

Returns a property by its number. The returned property can be modified by using methods of the Property class.

Source code (C++)

Vector<PropertyPtr> my_properties;
for (int i = 0; i < properties->getNumProperties(); i++) {
	my_properties.append(properties->getProperty(i));
}

Arguments

int num - Number of the property in range from 0 to the total number of properties.

Return value

Property smart pointer if it exists or NULL.

int isProperty(const char * name)

Checks if a property with the given name exists.

Arguments

const char * name - Name of the property.

Return value

1 if a property with the given name exists; otherwise, 0.

int isProperty(const UGUID & guid)

Checks if a property with the given GUID exists.

Arguments

const UGUID & guid - GUID of the property.

Return value

1 if a property with the given GUID exists; otherwise, 0.

int isManualProperty(const char * name)

Checks if a property with the given name exists.

Arguments

const char * name - Name of the manual property.

Return value

1 if a manual property with the given name exists; otherwise, 0.

const char * getPropertyName(int num)

Returns the name of the property by its number.

Arguments

int num - Number of the property in range from 0 to the total number of properties.

Return value

Name of the property.

NoticeIf the property with the specified number is internal and has a parent, the parent's name will be returned.

Ptr<Property> cloneProperty(const UGUID & guid, const char * name = 0, const char * path = 0)

Clones the property and assigns the specified name and path to the clone.

Notice

Without a name the cloned property won't be displayed in the properties hierarchy, without a path it won't be saved when saveProperties() is called.

Arguments

const UGUID & guid - GUID of the property to clone.
const char * name - Cloned property name.
const char * path - Path to save the cloned property.

Return value

Property smart pointer if the property with the specified GUID exists or nullptr.

Ptr<Property> findProperty(const char * name)

Searches for a property with the given name. The returned property can be managed using the methods of the Property class.

Arguments

const char * name - Property name.

Return value

Property, if it is found (an instance of the Property class); otherwise, nullptr.

Ptr<Property> findManualProperty(const char * name)

Searches for a manual property with the given name. The returned property can be managed using the methods of the Property class.

Arguments

const char * name - Manual property name.

Return value

Manual property, if it is found (an instance of the Property class); otherwise, nullptr.

Ptr<Property> findPropertyByGUID(const UGUID & guid)

Searches for a property with the given GUID. The returned property can be managed using the methods of the Property class.

Arguments

const UGUID & guid - Property GUID.

Return value

Property, if it is found (an instance of the Property class); otherwise, nullptr.

Ptr<Property> findPropertyByPath(const char * path)

Searches for a property with the given path. The returned property can be managed using the methods of the Property class.

Arguments

const char * path - Property path.

Return value

Property, if it is found (an instance of the Property class); otherwise, nullptr.

Ptr<Property> findPropertyByFileGUID(const UGUID & guid)

Searches for a property with the given *.prop file GUID. The returned property can be managed using the methods of the Property class.

Arguments

const UGUID & guid - Property file GUID.

Return value

Property, if it is found (an instance of the Property class); otherwise, nullptr.

Ptr<Property> loadProperty(const char * path)

Loads a property from the specified *.prop file. The returned property can be managed using the methods of the Property class.

Arguments

const char * path - Path to the *.prop file to load a property from.

Return value

Property, if it is loaded successfully (an instance of the Property class); otherwise, nullptr.

Ptr<Property> inheritProperty(const UGUID & guid, const char * name = 0, const char * path = 0)

Inherits a property from the given property and assigns the specified name and path to the new property.

Notice

Without a name the inherited property won't be displayed in the properties hierarchy, without a path it won't be saved when saveProperties() is called.

Arguments

const UGUID & guid - GUID of the property to inherit from.
const char * name - Inherited property name.
const char * path - Path to save the inherited property.

Return value

Property smart pointer if the property with the specified GUID exists or nullptr.

int removeProperty(const UGUID & guid, int remove_file = 0, int remove_children = 1)

Removes the property with the specified GUID.

Notice

A root property (the property that has no parent) or a non-editable property cannot be removed using this function.

Arguments

const UGUID & guid - GUID of the property to remove.
int remove_file - Flag indicating if the corresponding *.prop file will be deleted. Set 1 to delete the file, or 0 to keep it.
int remove_children - Flag indicating if all children of the property will be deleted. Set 1 to delete all children of the property, or 0 to link all children to the parent.

Return value

1 if the property is removed successfully; otherwise, 0.

int renameProperty(const UGUID & guid, const char * new_name)

Changes the name of the property with the specified GUID.

Notice

The name of the *.prop file is not affected.
This method is not available for the manual and non-editable properties.

Arguments

const UGUID & guid - GUID of the property to be renamed.
const char * new_name - New name for the property to be set.

Return value

1 if the property is renamed successfully; otherwise, 0.

int replaceProperty(const Ptr<Property> & property, const Ptr<Property> & new_property)

Replaces the specified property with a new one for all nodes and surfaces. The new property that replaces the specified one must exist. For example, if you have 3 nodes with the same property, calling this method will change this property to the specified one for all these nodes.

Arguments

const Ptr<Property> & property - Property to be replaced.
const Ptr<Property> & new_property - New property.

Return value

1 if the property is replaced successfully; otherwise, 0.

int reparentProperty(const UGUID & guid, const UGUID & new_parent, int save_all_values = 0)

Sets a new parent for the specified property. Both properties with given GUIDs must exist.

Notice

The method isn't available for the manual and non-editable properties.

Arguments

const UGUID & guid - GUID of the property whose parent is to be changed.
const UGUID & new_parent - GUID of the property to be set as a new parent.
int save_all_values - Flag indicating if parameter values of the specified property will be saved after reparenting.

Return value

1 if the parent for the property is changed successfully; otherwise, 0.

void reloadProperties()

Reloads all *.prop files from all data folders.

NoticeIf new *.prop files are found, they will be loaded automatically. The hierachy will be rebuilt if necessary, while keeping all overridden parameter values.

int saveProperties()

Saves all properties that can be saved to corresponding *.prop files.

Notice

This method will save only the properties that:

are not manual
are editable
have a name (not internal)
have a path

Return value

1 if all properties are saved successfully; otherwise, 0.

Unigine::CallbackBase * addCallback(int callback, Unigine::CallbackBase * func)

Adds a callback of the specified type. Callback functions can be used to determine actions to be performed when any changes to any property are made. The signature of the callback function must be as follows:

Source code (C++)

void callback_function_name(PropertyPtr property);

Here is an example of tracking property removal via callbacks:

Source code (C++)

void property_removed(PropertyPtr property)
{
	Log::message("Property \"%s\" was removed.\n", property->getName());
    // ...
}

// somewhere in the code

Properties *properties = Properties::get();

// inheriting a new property named "my_prop" from the base property "surface_base"
PropertyPtr property = Properties::get()->findManualProperty("surface_base")->inherit("my_prop");

// setting our callback function on property removal
properties->addCallback(Properties::CALLBACK_REMOVED, MakeCallback(property_removed));

// removing the property named "my_prop"
properties->removeProperty(properties->findProperty("my_prop")->getGUID());

Arguments

int callback - Callback type. One of the CALLBACK_* variables.
Unigine::CallbackBase * func - Callback pointer.

Return value

Pointer to the last added callback of the specified type, if the callback was added successsfully; otherwise, nullptr.

void removeCallback(int callback, Unigine::CallbackBase * func)

Removes a callback with the given number from the list of callbacks of the specified type. Callback functions can be used to determine actions to be performed when any changes to any property are made.

Arguments

int callback - Callback type. One of the CALLBACK_* variables.
Unigine::CallbackBase * func - Callback pointer.

void clearCallbacks(int callback)

Clears all added callbacks of the specified type. Callback functions can be used to determine actions to be performed when any changes to any property are made.

Arguments

int callback - Callback type. One of the CALLBACK_* variables.

int CALLBACK_CREATED

Description

Property created callback. This callback is fired when a new property is created.

int CALLBACK_MOVED

Description

Property moved callback. This callback is fired when the path of a property is changed.

int CALLBACK_REMOVED

Description

Property removed callback. This callback is fired when a property is removed.

int CALLBACK_RENAMED

Description

Property renamed callback. This callback is fired when the name of a property is changed.

int CALLBACK_REPARENTED

Description

Property reparented callback. This callback is fired when the parent of a property is changed.

Last update: 2018-08-10

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