1 #

     2 # Copyright (c) 2008-2017 Thierry Florac <tflorac AT ulthar.net>

     3 # All Rights Reserved.

     4 #

     5 # This software is subject to the provisions of the Zope Public License,

     6 # Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.

     7 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED

     8 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

     9 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

    10 # FOR A PARTICULAR PURPOSE.

    11 #

    12 

    13 __docformat__ = 'restructuredtext'

    14 

    15 

    16 # import standard library

    17 import json

    18 

    19 # import interfaces

    20 from pyams_form.interfaces.form import IFormLayer, IForm

    21 from pyams_gis.interfaces import IGeoArea

    22 from pyams_gis.interfaces.widget import IGeoAreaWidget

    23 from pyams_gis.schema import IGeoAreaField

    24 from pyams_utils.interfaces.data import IObjectData

    25 from z3c.form.interfaces import IFieldWidget, IObjectFactory

    26 

    27 # import packages

    28 from pyams_form.widget import widgettemplate_config

    29 from pyams_gis.area import GeoArea

    30 from pyams_utils.adapter import adapter_config

    31 from z3c.form.browser.object import ObjectWidget

    32 from z3c.form.object import getIfName

    33 from z3c.form.widget import FieldWidget

    34 from zope.interface import implementer_only, alsoProvides, Interface

    35 

    36 

    37 @adapter_config(name=getIfName(IGeoArea),

    38                 context=(Interface, IFormLayer, IForm, IGeoAreaWidget), provides=IObjectFactory)

    39 class GeoAreaObjectFactory(object):

    40     """GeoArea object factory"""

    41 

    42     def __init__(self, context, request, form, widget):

    43         self.context = context

    44         self.request = request

    45         self.form = form

    46         self.widget = widget

    47 

    48     def __call__(self, data):

    49         result = GeoArea()

    50         for name, value in data.items():

    51             setattr(result, name, value)

    52         return result

    53 

    54 

    55 @widgettemplate_config(mode='input', template='templates/geoarea-input.pt', layer=IFormLayer)

    56 @implementer_only(IGeoAreaWidget)

    57 class GeoAreaWidget(ObjectWidget):

    58     """GeoArea widget"""

    59 

    60     def updateWidgets(self, setErrors=True):

    61         super(GeoAreaWidget, self).updateWidgets()

    62         widgets = self.subform.widgets

    63         widgets['x1'].input_css_class = 'col-md-2'

    64         widgets['y1'].input_css_class = 'col-md-2'

    65         widgets['x2'].input_css_class = 'col-md-2'

    66         widgets['y2'].input_css_class = 'col-md-2'

    67         widgets['x1'].object_data = {'ams-change-handler': 'PyAMS_GIS.area.changedCoordinate'}

    68         widgets['y1'].object_data = {'ams-change-handler': 'PyAMS_GIS.area.changedCoordinate'}

    69         widgets['x2'].object_data = {'ams-change-handler': 'PyAMS_GIS.area.changedCoordinate'}

    70         widgets['y2'].object_data = {'ams-change-handler': 'PyAMS_GIS.area.changedCoordinate'}

    71         widgets['projection'].object_data = {'ams-events-handlers': {'change.select2': 'PyAMS_GIS.area.changedProjection'}}

    72         alsoProvides(widgets['x1'], IObjectData)

    73         alsoProvides(widgets['y1'], IObjectData)

    74         alsoProvides(widgets['x2'], IObjectData)

    75         alsoProvides(widgets['y2'], IObjectData)

    76         alsoProvides(widgets['projection'], IObjectData)

    77 

    78     @property

    79     def wgs_coordinates(self):

    80         value = self.field.get(self.field.interface(self.context))

    81         if not value:

    82             return json.dumps({'x1': None,

    83                                'y1': None,

    84                                'x2': None,

    85                                'y2': None})

    86         else:

    87             point1, point2 = value.wgs_coordinates

    88             return json.dumps({'x1': float(point1[0]),

    89                                'y1': float(point1[1]),

    90                                'x2': float(point2[0]),

    91                                'y2': float(point2[1])})

    92 

    93 

    94 @adapter_config(context=(IGeoAreaField, IFormLayer), provides=IFieldWidget)

    95 def GeoAreaFieldWidget(field, request):

    96     """GeoArea field widget factory"""

    97     return FieldWidget(field, GeoAreaWidget(request))