Init hook (#127)

* Add init hook

* Apply init hook throughout the whole repo

Author: berendkleinhaneveld

README.md

@@ -38,8 +38,7 @@ import collagraph as cg
 
 
 class Counter(cg.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["count"] = 0
 
     def bump(self):

collagraph/component.py

@@ -27,6 +27,12 @@ def __init__(self, props=None, parent=None):
         self._parent = ref(parent) if parent else None
         self._provided = {}
 
+        # Call init hook at end of __init__
+        self.init()
+
+    def init(self):
+        pass
+
     @property
     def props(self):
         """The incoming props of this component."""

examples/pygfx/app_point_cloud.cgx

@@ -18,8 +18,7 @@ from examples.pygfx.point_cloud import PointCloud
 
 
 class Example(cg.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["count"] = self.props["count"]
 
     def add(self):

examples/pygfx/button.cgx

@@ -32,8 +32,7 @@ class Button(cg.Component):
         ),
     }
 
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["pressed"] = False
         self.state["hovered"] = False
         self.state["scale"] = self.props.get("scale", [0.85] * 3)

examples/pygfx/numberpad.cgx

@@ -9,8 +9,7 @@ from examples.pygfx.button import Button
 
 
 class NumberPad(cg.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["columns"] = 4
         self.state["rows"] = 5
 

examples/pygfx/point_cloud.cgx

@@ -34,8 +34,7 @@ def rand_point():
 
 
 class PointCloud(collagraph.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["positions"] = []
         self.state["hovered"] = -1
         self.state["selected"] = -1

examples/pyside/big_list.cgx

@@ -63,8 +63,7 @@ from examples.pyside.item import Item
 
 
 class TreeWidget(cg.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["columns"] = ["text", "other"]
         self.state["items"] = [
             *[{"text": f"text-{idx}", "other": f"other-{idx}"} for idx in range(500)]

examples/pyside/cgx_component_example.cgx

@@ -22,8 +22,7 @@ from collagraph import Component
 
 
 class Example(Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["top_to_bottom"] = {
             "type": "box",
             "direction": "TopToBottom",

examples/pyside/counter.cgx

@@ -17,8 +17,7 @@ import collagraph as cg
 
 
 class Counter(cg.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["count"] = 0
 
     def bump(self):

examples/pyside/dialog_example.cgx

@@ -40,8 +40,7 @@ import collagraph as cg
 
 
 class ListDialog(cg.Component):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+    def init(self):
         self.state["selected"] = -1
 
     def accepted(self):