diff options
Diffstat (limited to 'tutorius/properties.py')
| -rw-r--r-- | tutorius/properties.py | 101 |
1 files changed, 79 insertions, 22 deletions
diff --git a/tutorius/properties.py b/tutorius/properties.py index 9639010..c7af821 100644 --- a/tutorius/properties.py +++ b/tutorius/properties.py @@ -19,12 +19,13 @@ TutoriusProperties have the same behaviour as python properties (assuming you also use the TPropContainer), with the added benefit of having builtin dialog prompts and constraint validation. """ +from copy import copy, deepcopy -from sugar.tutorius.constraints import Constraint, \ +from .constraints import Constraint, \ UpperLimitConstraint, LowerLimitConstraint, \ MaxSizeConstraint, MinSizeConstraint, \ - ColorConstraint, FileConstraint, BooleanConstraint, EnumConstraint -from copy import copy + ColorConstraint, FileConstraint, BooleanConstraint, EnumConstraint, \ + ResourceConstraint class TPropContainer(object): """ @@ -89,12 +90,33 @@ class TPropContainer(object): except AttributeError: return object.__setattr__(self, name, value) + def replace_property(self, prop_name, new_prop): + """ + Changes the content of a property. This is done in order to support + the insertion of executable properties in the place of a portable + property. The typical exemple is that a resource property needs to + be changed into a file property with the correct file name, since the + installation location will be different on every platform. + + @param prop_name The name of the property to be changed + @param new_prop The new property to insert + @raise AttributeError of the mentionned property doesn't exist + """ + props = object.__getattribute__(self, "_props") + props.__setitem__(prop_name, new_prop) + def get_properties(self): """ Return the list of property names. """ return object.__getattribute__(self, "_props").keys() + def get_properties_dict_copy(self): + """ + Return a deep copy of the dictionary of properties from that object. + """ + return deepcopy(self._props) + # Providing the hash methods necessary to use TPropContainers # in a dictionary, according to their properties def __hash__(self): @@ -104,7 +126,7 @@ class TPropContainer(object): return hash(tuple(map(tuple,sorted(self._props.items(), cmp=lambda x, y: cmp(x[0], y[0]))))) def __eq__(self, e2): - return self._props.items() == e2._props.items() + return isinstance(e2, type(self)) and self._props == e2._props # Adding methods for pickling and unpickling an object with # properties @@ -164,19 +186,6 @@ class TAddonListProperty(TutoriusProperty): """ pass - - def get_constraints(self): - """ - Returns the list of constraints associated to this property. - """ - if self._constraints is None: - self._constraints = [] - for i in dir(self): - typ = getattr(self, i) - if isinstance(typ, Constraint): - self._constraints.append(i) - return self._constraints - class TIntProperty(TutoriusProperty): """ Represents an integer. Can have an upper value limit and/or a lower value @@ -226,7 +235,7 @@ class TArrayProperty(TutoriusProperty): self.type = "array" self.max_size_limit = MaxSizeConstraint(max_size_limit) self.min_size_limit = MinSizeConstraint(min_size_limit) - self.default = self.validate(value) + self.default = tuple(self.validate(value)) #Make this thing hashable def __setstate__(self, state): @@ -268,8 +277,6 @@ class TFileProperty(TutoriusProperty): For now, the path may be relative or absolute, as long as it exists on the local machine. - TODO : Make sure that we have a file scheme that supports distribution - on other computers (LP 355197) """ TutoriusProperty.__init__(self) @@ -323,6 +330,8 @@ class TUAMProperty(TutoriusProperty): self.type = "uam" + self.default = self.validate(value) + class TAddonProperty(TutoriusProperty): """ Reprensents an embedded tutorius Addon Component (action, trigger, etc.) @@ -344,14 +353,62 @@ class TAddonProperty(TutoriusProperty): return super(TAddonProperty, self).validate(value) raise ValueError("Expected TPropContainer instance as TaddonProperty value") +class TEventType(TutoriusProperty): + """ + Represents an GUI signal for a widget. + """ + def __init__(self, value): + super(TEventType, self).__init__() + self.type = "gtk-signal" + + self.default = self.validate(value) + class TAddonListProperty(TutoriusProperty): """ - Reprensents an embedded tutorius Addon List Component. + Represents an embedded tutorius Addon List Component. See TAddonProperty """ def __init__(self): - super(TAddonProperty, self).__init__() + TutoriusProperty.__init__(self) self.type = "addonlist" self.default = [] + def validate(self, value): + if isinstance(value, list): + for component in value: + if not (isinstance(component, TPropContainer)): + raise ValueError("Expected a list of TPropContainer instances inside TAddonListProperty value, got a %s" % (str(type(component)))) + return value + raise ValueError("Value proposed to TAddonListProperty is not a list") + +class TResourceProperty(TutoriusProperty): + """ + Represents a resource in the tutorial. A resource is a file with a specific + name that exists under the tutorials folder. It is distributed alongside the + tutorial itself. + + When the system encounters a resource, it knows that it refers to a file in + the resource folder and that it should translate this resource name to an + absolute file name before it is executed. + + E.g. An image is added to a tutorial in an action. On doing so, the creator + adds a resource to the tutorial, then saves its name in the resource + property of that action. When this tutorial is executed, the Engine + replaces all the TResourceProperties inside the action by their equivalent + TFileProperties with absolute paths, so that they can be used on any + machine. + """ + def __init__(self, resource_name=""): + """ + Creates a new resource pointing to an existing resource. + + @param resource_name The file name of the resource (should be only the + file name itself, no directory information) + """ + TutoriusProperty.__init__(self) + self.type = "resource" + + self.resource_cons = ResourceConstraint() + + self.default = self.validate("") |