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ViewProcessor.py
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ViewProcessor.py
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from decoders import *
from copy import copy
class ObjectProcessor(object):
def __init__(self, ctx):
self.ctx = ctx
self.xib_id = None
self.var_name = None
self.class_name = None
def process(self, obj):
attrs = copy(obj.attrib)
self.process_id(obj, attrs)
self.process_class(obj, attrs)
self.construct_instance(obj, attrs)
self.process_attrs(attrs)
self.ctx.check_attributes(attrs)
for e in obj:
self.process_element(e)
return self.var_name
def process_id(self, obj, attrs):
self.xib_id = attrs.pop('id')
self.var_name = self.generate_name()
self.ctx.id_to_var[self.xib_id] = self.var_name
def generate_name(self):
return self.ctx.generate_var_name('obj')
def process_class(self, obj, attrs):
class_name = attrs.pop('customClass', None)
if class_name is None:
class_name = self.default_class()
self.class_name = class_name
def default_class(self):
return UnknownAttributeValue()
def constructor_expr(self, obj, attrs):
return '[[' + self.class_name + ' alloc] init]'
def construct_instance(self, obj, attrs):
constructor_expr = self.constructor_expr(obj, attrs)
self.ctx.write(self.class_name + ' *' + self.var_name + ' = ' + constructor_expr + ';')
def process_attrs(self, attrs):
keys = list(attrs.keys())
keys.sort()
for key in keys:
decoder = self.decoder_for_attribute(key)
if decoder is None:
continue
value = attrs.pop(key)
value = decoder(value)
self.write_property(key, value)
def decoder_for_attribute(self, key):
return None
def process_element(self, e):
val = self.ctx.parse_value_element(e)
if val is not None:
(key, value) = val
self.write_property(key, value)
else:
raise UnknownTag()
def should_skip_property(self, key):
return False
def write_property(self, key, value):
if self.should_skip_property(key):
return
self.write_property_impl(key, value)
def write_property_impl(self, key, value):
property_name = self.property_name_for_key(key)
self.ctx.write(self.var_name + '.' + property_name + ' = ' + value + ';')
def property_name_for_key(self, key):
return key
class ViewProcessor(ObjectProcessor):
decoder_func_for_attribute = {
'adjustsFontSizeToFit': decode_bool,
'baselineAdjustment': decode_baseline_adjustment,
'contentMode': decode_content_mode,
'horizontalHuggingPriority': decode_number,
'horizontalCompressionResistancePriority': decode_number,
'lineBreakMode': decode_line_break_mode,
'opaque': decode_bool,
'text': decode_string,
'textAlignment': decode_text_alignment,
'translatesAutoresizingMaskIntoConstraints': decode_bool,
'userInteractionEnabled': decode_bool,
'verticalHuggingPriority': decode_number,
'verticalCompressionResistancePriority': decode_number,
'multipleTouchEnabled': decode_bool,
'clipsSubviews': decode_bool,
'misplaced': decode_bool,
'minimumScaleFactor': decode_number,
'clearsContextBeforeDrawing': decode_bool
}
def generate_name(self):
return self.ctx.generate_var_name('v')
def default_class(self):
return 'UIView'
def constructor_expr(self, obj, attrs):
rect = self.find_frame(obj)
return '[[' + self.class_name + ' alloc] initWithFrame:' + rect + ']'
def find_frame(self, view):
for r in view.findall('rect'):
if r.get('key') == 'frame':
attrs = copy(r.attrib)
attrs.pop('key')
return self.ctx.parse_rect(attrs, r, as_object=False)
return None
def process_attrs(self, attrs):
attrs.pop('userLabel', None)
super().process_attrs(attrs)
def decoder_for_attribute(self, key):
return ViewProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)
def process_element(self, e):
if e.tag == 'subviews':
self.ctx.process_subviews(e, self.var_name)
elif e.tag == 'constraints':
self.ctx.process_constraints(e, self.var_name)
elif e.tag == 'userDefinedRuntimeAttributes':
self.ctx.process_user_defined_runtime_attributes(e, self)
elif e.tag == 'connections':
self.ctx.process_connections(e, self.xib_id)
else:
super().process_element(e)
def should_skip_property(self, key):
return key in {'frame', 'misplaced'}
def write_property_impl(self, key, value):
if key == 'verticalHuggingPriority':
self.ctx.write('[' + self.var_name + ' setContentHuggingPriority:' + value + ' forAxis:UILayoutConstraintAxisVertical];')
elif key == 'horizontalHuggingPriority':
self.ctx.write('[' + self.var_name + ' setContentHuggingPriority:' + value + ' forAxis:UILayoutConstraintAxisHorizontal];')
elif key == 'horizontalCompressionResistancePriority':
self.ctx.write('[' + self.var_name + ' setContentCompressionResistancePriority:' + value + ' forAxis:UILayoutConstraintAxisHorizontal];')
elif key == 'verticalCompressionResistancePriority':
self.ctx.write('[' + self.var_name + ' setContentCompressionResistancePriority:' + value + ' forAxis:UILayoutConstraintAxisHorizontal];')
else:
super().write_property_impl(key, value)
def property_name_for_key(self, key):
if key == 'clipsSubviews':
return 'clipsToBounds'
return super().property_name_for_key(key)
class RootViewProcessor(ViewProcessor):
def generate_name(self):
return 'self'
def should_skip_property(self, key):
skipped_properties = {
'autoresizingMask',
'simulatedStatusBarMetrics',
'simulatedDestinationMetrics',
'canvasLocation'
}
if key in skipped_properties:
return True
return ViewProcessor.should_skip_property(self, key)
def construct_instance(self, view, attrs):
pass
def process_attrs(self, attrs):
attrs.pop('contentMode', None)
super().process_attrs(attrs)
class LabelProcessor(ViewProcessor):
def __init__(self, ctx):
ViewProcessor.__init__(self, ctx)
self.uses_attributed_text = None
decoder_func_for_attribute = {
'adjustsFontSizeToFit': decode_bool,
'adjustsLetterSpacingToFitWidth': decode_bool,
'baselineAdjustment': decode_baseline_adjustment,
'lineBreakMode': decode_line_break_mode,
'text': decode_string,
'textAlignment': decode_text_alignment,
'minimumScaleFactor': decode_number,
'minimumFontSize': decode_number,
'numberOfLines': decode_number
}
def default_class(self):
return 'UILabel'
def process_attrs(self, attrs):
self.uses_attributed_text = self.ctx.get_bool(attrs.pop('usesAttributedText', 'NO'))
super().process_attrs(attrs)
def decoder_for_attribute(self, key):
return LabelProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)
def property_name_for_key(self, key):
if key == 'adjustsFontSizeToFit':
return 'adjustsFontSizeToFitWidth'
elif key == 'fontDescription':
return 'font'
elif key == 'highlightedColor':
return 'highlightedTextColor'
elif key == 'clipsSubviews':
return 'clipsToBounds'
else:
return super().property_name_for_key(key)
def write_property_impl(self, key, value):
if key == 'text':
if self.uses_attributed_text:
raise UnknownAttributeValue()
elif key == 'attributedText':
if not self.uses_attributed_text:
raise UnknownAttributeValue()
super().write_property_impl(key, value)
class ScrollViewProcessor(ViewProcessor):
decoder_func_for_attribute = {
'showsHorizontalScrollIndicator': decode_bool,
'showsVerticalScrollIndicator': decode_bool,
'pagingEnabled': decode_bool,
}
def default_class(self):
return 'UIScrollView'
def decoder_for_attribute(self, key):
return ScrollViewProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)
class ControlProcessor(ViewProcessor):
decoder_func_for_attribute = {
'contentHorizontalAlignment': decode_content_horizontal_alignment,
'contentVerticalAlignment': decode_content_vertical_alignment,
}
def decoder_for_attribute(self, key):
return ControlProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)
def process_element(self, e):
if e.tag == 'state':
proc = self.make_state_processor()
proc.process(e)
else:
return super().process_element(e)
def make_state_processor(self):
return ControlStateProcessor(self)
def decoder_for_state_attribute(self, key):
return None
class ControlStateProcessor(ObjectProcessor):
def __init__(self, parent_proc):
ObjectProcessor.__init__(self, parent_proc.ctx)
self.parent_proc = parent_proc
self.button_state = None
def process_id(self, obj, attrs):
pass
def process_class(self, obj, attrs):
pass
def construct_instance(self, obj, attrs):
pass
def process_attrs(self, attrs):
self.button_state = decode_control_state(attrs.pop('key'))
super().process_attrs(attrs)
def decoder_for_attribute(self, key):
return self.parent_proc.decoder_for_state_attribute(key) or super().decoder_for_attribute(key)
def write_property_impl(self, key, value):
v_name = self.parent_proc.var_name
s_name = decode_enum_with_prefix(' set', key) + ':'
self.ctx.write('[' + v_name + s_name + value + ' forState:' + self.button_state + '];')
class ButtonProcessor(ControlProcessor):
decoder_func_for_state_attribute = {
'title': decode_string,
}
def default_class(self):
return 'UIButton'
def constructor_expr(self, obj, attrs):
button_type = decode_button_type(attrs.pop('buttonType', 'custom'))
return '[' + self.class_name + ' buttonWithType:' + button_type + ']'
def find_frame(self, view):
for r in view.findall('rect'):
if r.get('key') == 'frame':
attrs = copy(r.attrib)
attrs.pop('key')
return self.ctx.parse_rect(attrs, r)
return None
def should_skip_property(self, key):
if key == 'frame':
return False
return super().should_skip_property(key)
def decoder_for_state_attribute(self, key):
return ButtonProcessor.decoder_func_for_state_attribute.get(key) \
or super().decoder_for_state_attribute(key)
def write_property_impl(self, key, value):
if key == 'lineBreakMode':
key = 'titleLabel.' + key
super().write_property_impl(key, value)
class ImageViewProcessor(ViewProcessor):
decoder_func_for_attribute = {
'image': decode_image_with_name,
}
def default_class(self):
return 'UIImageView'
def decoder_for_attribute(self, key):
return ImageViewProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)
class MapViewProcessor(ViewProcessor):
decoder_func_for_attribute = {
'scrollEnabled': decode_bool,
'pitchEnabled': decode_bool,
'rotateEnabled': decode_bool,
'mapType': decode_map_type,
'zoomEnabled': decode_bool,
'showsUserLocation': decode_bool,
}
def default_class(self):
return 'MKMapView'
def decoder_for_attribute(self, key):
return MapViewProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)
class PageControlProcessor(ControlProcessor):
decoder_func_for_attribute = {
'numberOfPages': decode_number,
}
def default_class(self):
return 'UIPageControl'
def decoder_for_attribute(self, key):
return PageControlProcessor.decoder_func_for_attribute.get(key) or super().decoder_for_attribute(key)