Demo script to trigger a bug using drag and drop in vanilla/RoboFont

dragdropbug.py

import vanilla

from Cocoa import NSColorPboardType

from AppKit import NSColor
from defconAppKit.windows.baseWindow import BaseWindowController

class DDWindow(BaseWindowController):

    def __init__(self):
        self.color = "#000000"
        
        layer_columns = [
            {"title": "Index",
            #"cell": vanilla.CheckBoxListCell(),
            "width": 45,
            "editable": True},
            {"title": "Color",
            #"cell": vanilla.CheckBoxListCell(),
            "width": 45,
            "editable": True},
            {"title": "Layer Glyph",
            "typingSensitive": True,
            "editable": True},
        ]
        
        layer_drop_settings = {
            "type": NSColorPboardType,
            "allowDropBetweenRows": False,
            "allowDropOnRow": True,
            "callback": self._callback_layer_drop,
        }
        
        self.w = vanilla.Window((200, 204), "Bug Demo")

        self.w.colorChooser = vanilla.ColorWell((10, 10, 40, 22), 
            color=self.getNSColor(self.color),
        )
        
        self.w.color_label = vanilla.TextBox((60, 13, 120, 20), "Drag color onto list", sizeStyle="small")
        
        self.w.layer_list = vanilla.List((10, 42, -10, 150),
            [{"Index": 0, "Color": "foo", "Layer Glyph": "bar"},
            {"Index": 1, "Color": "#123", "Layer Glyph": "aringacute"}],
            columnDescriptions=layer_columns,
            drawFocusRing=True,
            enableDelete=True,
            allowsMultipleSelection=False,
            otherApplicationDropSettings=layer_drop_settings,
            )
        self.setUpBaseWindowBehavior()
        self.w.open()

    
    """example dropinfo:
        Something was dropped on the layer list:
{'rowIndex': 0, 'source': <objective-c class NSColorPanel at 0x7fff72b29ef0>, 'data': {
    "$archiver" = NSKeyedArchiver;
    "$objects" =     (
        "$null",
                {
            "$class" = "<CFKeyedArchiverUID 0x608000c2d220 [0x7fff70e30f00]>{value = 2}";
            NSColorSpace = 1;
            NSRGB = <30203020 3000>;
        },
                {
            "$classes" =             (
                NSColor,
                NSObject
            );
            "$classname" = NSColor;
        }
    );
    "$top" =     {
        root = "<CFKeyedArchiverUID 0x608000c33260 [0x7fff70e30f00]>{value = 1}";
    };
    "$version" = 100000;
}, 'dropOnRow': False, 'isProposal': True}
    """
    
    def _callback_layer_drop(self, sender=None, dropInfo=None):
        if dropInfo["isProposal"]:
            # TODO: check if drop is acceptable
            return True
        else:
            print "DEBUG: dropped color on row %i" % dropInfo["rowIndex"]
            # TODO: accept the drop (actually do something)
            print dropInfo
            return True
  
    def getNSColor(self, hexrgba):
        # return NSColor for r, g, b, a tuple
        r, g, b, a = self.getTupleColor(hexrgba)
        return NSColor.colorWithCalibratedRed_green_blue_alpha_(r, g, b, a)
    
    def getTupleColor(self, hexrgba, opacity_factor=1):
        r = float(int(hexrgba[1:3], 16)) / 255
        g = float(int(hexrgba[3:5], 16)) / 255
        b = float(int(hexrgba[5:7], 16)) / 255
        if len(hexrgba) == 9:
            a = float(int(hexrgba[7:9], 16)) / 255 * opacity_factor
        else:
            a = opacity_factor
        return (r, g, b, a)
    

if __name__ == "__main__":
    OpenWindow(DDWindow)