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162 lines
5.0 KiB
Python
162 lines
5.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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layer.py
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---------------------
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Date : November 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'November 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from style import Style
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from support import ResourceInfo, \
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xml_property, write_bool, url
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class _attribution(object):
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def __init__(self, title, width, height):
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self.title = title
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self.width = width
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self.height = height
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def _read_attribution(node):
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title = node.find('title')
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width = node.find('logoWidth')
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height = node.find('logoHeight')
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if title is not None:
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title = title.text
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if width is not None:
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width = width.text
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if height is not None:
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height = height.text
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return _attribution(title, width, height)
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def _write_attribution(builder, attr):
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builder.start('attribution', dict())
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if attr.title is not None:
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builder.start('title', dict())
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builder.data(attr.title)
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builder.end('title')
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if attr.width is not None:
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builder.start('logoWidth', dict())
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builder.data(attr.width)
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builder.end('logoWidth')
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if attr.height is not None:
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builder.start('logoHeight', dict())
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builder.data(attr.height)
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builder.end('logoHeight')
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builder.end('attribution')
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def _write_default_style(builder, name):
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builder.start('defaultStyle', dict())
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if name is not None:
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builder.start('name', dict())
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builder.data(name)
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builder.end('name')
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builder.end('defaultStyle')
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def _write_alternate_styles(builder, styles):
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builder.start('styles', dict())
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for s in styles:
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builder.start('style', dict())
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builder.start('name', dict())
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builder.data(s.name)
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builder.end('name')
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builder.end('style')
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builder.end('styles')
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class Layer(ResourceInfo):
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def __init__(self, catalog, name):
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super(Layer, self).__init__()
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self.catalog = catalog
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self.name = name
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resource_type = 'layer'
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save_method = 'PUT'
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@property
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def href(self):
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return url(self.catalog.service_url, ['layers', self.name + '.xml'])
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@property
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def resource(self):
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if self.dom is None:
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self.fetch()
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name = self.dom.find('resource/name').text
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return self.catalog.get_resource(name)
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def _get_default_style(self):
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if 'default_style' in self.dirty:
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return self.dirty['default_style']
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if self.dom is None:
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self.fetch()
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name = self.dom.find('defaultStyle/name')
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# Aborted data uploads can result in no default style
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if name is not None:
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return self.catalog.get_style(name.text)
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else:
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return None
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def _set_default_style(self, style):
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if isinstance(style, Style):
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style = style.name
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self.dirty['default_style'] = style
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def _get_alternate_styles(self):
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if 'alternate_styles' in self.dirty:
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return self.dirty['alternate_styles']
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if self.dom is None:
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self.fetch()
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styles = self.dom.findall('styles/style/name')
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return [Style(self.catalog, s.text) for s in styles]
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def _set_alternate_styles(self, styles):
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self.dirty['alternate_styles'] = styles
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default_style = property(_get_default_style, _set_default_style)
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styles = property(_get_alternate_styles, _set_alternate_styles)
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attribution_object = xml_property('attribution', _read_attribution)
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enabled = xml_property('enabled', lambda x: x.text == 'true')
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def _get_attr_text(self):
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return self.attribution_object.title
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def _set_attr_text(self, text):
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self.dirty['attribution'] = _attribution(text,
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self.attribution_object.width, self.attribution_object.height)
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assert self.attribution_object.title == text
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attribution = property(_get_attr_text, _set_attr_text)
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writers = dict(attribution=_write_attribution, enabled=write_bool('enabled'
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), default_style=_write_default_style,
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alternate_styles=_write_alternate_styles)
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