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Federico Hlawaczek committed 2229952

Added some tools from El Morfi

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Files changed (10)

admin_gmaps/__init__.py

Empty file added.

admin_gmaps/static/admin_gmaps/json2.js

+/*
+    http://www.JSON.org/json2.js
+    2010-11-17
+
+    Public Domain.
+
+    NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+    See http://www.JSON.org/js.html
+
+
+    This code should be minified before deployment.
+    See http://javascript.crockford.com/jsmin.html
+
+    USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
+    NOT CONTROL.
+
+
+    This file creates a global JSON object containing two methods: stringify
+    and parse.
+
+        JSON.stringify(value, replacer, space)
+            value       any JavaScript value, usually an object or array.
+
+            replacer    an optional parameter that determines how object
+                        values are stringified for objects. It can be a
+                        function or an array of strings.
+
+            space       an optional parameter that specifies the indentation
+                        of nested structures. If it is omitted, the text will
+                        be packed without extra whitespace. If it is a number,
+                        it will specify the number of spaces to indent at each
+                        level. If it is a string (such as '\t' or ' '),
+                        it contains the characters used to indent at each level.
+
+            This method produces a JSON text from a JavaScript value.
+
+            When an object value is found, if the object contains a toJSON
+            method, its toJSON method will be called and the result will be
+            stringified. A toJSON method does not serialize: it returns the
+            value represented by the name/value pair that should be serialized,
+            or undefined if nothing should be serialized. The toJSON method
+            will be passed the key associated with the value, and this will be
+            bound to the value
+
+            For example, this would serialize Dates as ISO strings.
+
+                Date.prototype.toJSON = function (key) {
+                    function f(n) {
+                        // Format integers to have at least two digits.
+                        return n < 10 ? '0' + n : n;
+                    }
+
+                    return this.getUTCFullYear()   + '-' +
+                         f(this.getUTCMonth() + 1) + '-' +
+                         f(this.getUTCDate())      + 'T' +
+                         f(this.getUTCHours())     + ':' +
+                         f(this.getUTCMinutes())   + ':' +
+                         f(this.getUTCSeconds())   + 'Z';
+                };
+
+            You can provide an optional replacer method. It will be passed the
+            key and value of each member, with this bound to the containing
+            object. The value that is returned from your method will be
+            serialized. If your method returns undefined, then the member will
+            be excluded from the serialization.
+
+            If the replacer parameter is an array of strings, then it will be
+            used to select the members to be serialized. It filters the results
+            such that only members with keys listed in the replacer array are
+            stringified.
+
+            Values that do not have JSON representations, such as undefined or
+            functions, will not be serialized. Such values in objects will be
+            dropped; in arrays they will be replaced with null. You can use
+            a replacer function to replace those with JSON values.
+            JSON.stringify(undefined) returns undefined.
+
+            The optional space parameter produces a stringification of the
+            value that is filled with line breaks and indentation to make it
+            easier to read.
+
+            If the space parameter is a non-empty string, then that string will
+            be used for indentation. If the space parameter is a number, then
+            the indentation will be that many spaces.
+
+            Example:
+
+            text = JSON.stringify(['e', {pluribus: 'unum'}]);
+            // text is '["e",{"pluribus":"unum"}]'
+
+
+            text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
+            // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
+
+            text = JSON.stringify([new Date()], function (key, value) {
+                return this[key] instanceof Date ?
+                    'Date(' + this[key] + ')' : value;
+            });
+            // text is '["Date(---current time---)"]'
+
+
+        JSON.parse(text, reviver)
+            This method parses a JSON text to produce an object or array.
+            It can throw a SyntaxError exception.
+
+            The optional reviver parameter is a function that can filter and
+            transform the results. It receives each of the keys and values,
+            and its return value is used instead of the original value.
+            If it returns what it received, then the structure is not modified.
+            If it returns undefined then the member is deleted.
+
+            Example:
+
+            // Parse the text. Values that look like ISO date strings will
+            // be converted to Date objects.
+
+            myData = JSON.parse(text, function (key, value) {
+                var a;
+                if (typeof value === 'string') {
+                    a =
+/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
+                    if (a) {
+                        return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+                            +a[5], +a[6]));
+                    }
+                }
+                return value;
+            });
+
+            myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
+                var d;
+                if (typeof value === 'string' &&
+                        value.slice(0, 5) === 'Date(' &&
+                        value.slice(-1) === ')') {
+                    d = new Date(value.slice(5, -1));
+                    if (d) {
+                        return d;
+                    }
+                }
+                return value;
+            });
+
+
+    This is a reference implementation. You are free to copy, modify, or
+    redistribute.
+*/
+
+/*jslint evil: true, strict: false, regexp: false */
+
+/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
+    call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
+    getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
+    lastIndex, length, parse, prototype, push, replace, slice, stringify,
+    test, toJSON, toString, valueOf
+*/
+
+
+// Create a JSON object only if one does not already exist. We create the
+// methods in a closure to avoid creating global variables.
+
+if (!this.JSON) {
+    this.JSON = {};
+}
+
+(function () {
+    "use strict";
+
+    function f(n) {
+        // Format integers to have at least two digits.
+        return n < 10 ? '0' + n : n;
+    }
+
+    if (typeof Date.prototype.toJSON !== 'function') {
+
+        Date.prototype.toJSON = function (key) {
+
+            return isFinite(this.valueOf()) ?
+                   this.getUTCFullYear()   + '-' +
+                 f(this.getUTCMonth() + 1) + '-' +
+                 f(this.getUTCDate())      + 'T' +
+                 f(this.getUTCHours())     + ':' +
+                 f(this.getUTCMinutes())   + ':' +
+                 f(this.getUTCSeconds())   + 'Z' : null;
+        };
+
+        String.prototype.toJSON =
+        Number.prototype.toJSON =
+        Boolean.prototype.toJSON = function (key) {
+            return this.valueOf();
+        };
+    }
+
+    var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+        escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+        gap,
+        indent,
+        meta = {    // table of character substitutions
+            '\b': '\\b',
+            '\t': '\\t',
+            '\n': '\\n',
+            '\f': '\\f',
+            '\r': '\\r',
+            '"' : '\\"',
+            '\\': '\\\\'
+        },
+        rep;
+
+
+    function quote(string) {
+
+// If the string contains no control characters, no quote characters, and no
+// backslash characters, then we can safely slap some quotes around it.
+// Otherwise we must also replace the offending characters with safe escape
+// sequences.
+
+        escapable.lastIndex = 0;
+        return escapable.test(string) ?
+            '"' + string.replace(escapable, function (a) {
+                var c = meta[a];
+                return typeof c === 'string' ? c :
+                    '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
+            }) + '"' :
+            '"' + string + '"';
+    }
+
+
+    function str(key, holder) {
+
+// Produce a string from holder[key].
+
+        var i,          // The loop counter.
+            k,          // The member key.
+            v,          // The member value.
+            length,
+            mind = gap,
+            partial,
+            value = holder[key];
+
+// If the value has a toJSON method, call it to obtain a replacement value.
+
+        if (value && typeof value === 'object' &&
+                typeof value.toJSON === 'function') {
+            value = value.toJSON(key);
+        }
+
+// If we were called with a replacer function, then call the replacer to
+// obtain a replacement value.
+
+        if (typeof rep === 'function') {
+            value = rep.call(holder, key, value);
+        }
+
+// What happens next depends on the value's type.
+
+        switch (typeof value) {
+        case 'string':
+            return quote(value);
+
+        case 'number':
+
+// JSON numbers must be finite. Encode non-finite numbers as null.
+
+            return isFinite(value) ? String(value) : 'null';
+
+        case 'boolean':
+        case 'null':
+
+// If the value is a boolean or null, convert it to a string. Note:
+// typeof null does not produce 'null'. The case is included here in
+// the remote chance that this gets fixed someday.
+
+            return String(value);
+
+// If the type is 'object', we might be dealing with an object or an array or
+// null.
+
+        case 'object':
+
+// Due to a specification blunder in ECMAScript, typeof null is 'object',
+// so watch out for that case.
+
+            if (!value) {
+                return 'null';
+            }
+
+// Make an array to hold the partial results of stringifying this object value.
+
+            gap += indent;
+            partial = [];
+
+// Is the value an array?
+
+            if (Object.prototype.toString.apply(value) === '[object Array]') {
+
+// The value is an array. Stringify every element. Use null as a placeholder
+// for non-JSON values.
+
+                length = value.length;
+                for (i = 0; i < length; i += 1) {
+                    partial[i] = str(i, value) || 'null';
+                }
+
+// Join all of the elements together, separated with commas, and wrap them in
+// brackets.
+
+                v = partial.length === 0 ? '[]' :
+                    gap ? '[\n' + gap +
+                            partial.join(',\n' + gap) + '\n' +
+                                mind + ']' :
+                          '[' + partial.join(',') + ']';
+                gap = mind;
+                return v;
+            }
+
+// If the replacer is an array, use it to select the members to be stringified.
+
+            if (rep && typeof rep === 'object') {
+                length = rep.length;
+                for (i = 0; i < length; i += 1) {
+                    k = rep[i];
+                    if (typeof k === 'string') {
+                        v = str(k, value);
+                        if (v) {
+                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
+                        }
+                    }
+                }
+            } else {
+
+// Otherwise, iterate through all of the keys in the object.
+
+                for (k in value) {
+                    if (Object.hasOwnProperty.call(value, k)) {
+                        v = str(k, value);
+                        if (v) {
+                            partial.push(quote(k) + (gap ? ': ' : ':') + v);
+                        }
+                    }
+                }
+            }
+
+// Join all of the member texts together, separated with commas,
+// and wrap them in braces.
+
+            v = partial.length === 0 ? '{}' :
+                gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' +
+                        mind + '}' : '{' + partial.join(',') + '}';
+            gap = mind;
+            return v;
+        }
+    }
+
+// If the JSON object does not yet have a stringify method, give it one.
+
+    if (typeof JSON.stringify !== 'function') {
+        JSON.stringify = function (value, replacer, space) {
+
+// The stringify method takes a value and an optional replacer, and an optional
+// space parameter, and returns a JSON text. The replacer can be a function
+// that can replace values, or an array of strings that will select the keys.
+// A default replacer method can be provided. Use of the space parameter can
+// produce text that is more easily readable.
+
+            var i;
+            gap = '';
+            indent = '';
+
+// If the space parameter is a number, make an indent string containing that
+// many spaces.
+
+            if (typeof space === 'number') {
+                for (i = 0; i < space; i += 1) {
+                    indent += ' ';
+                }
+
+// If the space parameter is a string, it will be used as the indent string.
+
+            } else if (typeof space === 'string') {
+                indent = space;
+            }
+
+// If there is a replacer, it must be a function or an array.
+// Otherwise, throw an error.
+
+            rep = replacer;
+            if (replacer && typeof replacer !== 'function' &&
+                    (typeof replacer !== 'object' ||
+                     typeof replacer.length !== 'number')) {
+                throw new Error('JSON.stringify');
+            }
+
+// Make a fake root object containing our value under the key of ''.
+// Return the result of stringifying the value.
+
+            return str('', {'': value});
+        };
+    }
+
+
+// If the JSON object does not yet have a parse method, give it one.
+
+    if (typeof JSON.parse !== 'function') {
+        JSON.parse = function (text, reviver) {
+
+// The parse method takes a text and an optional reviver function, and returns
+// a JavaScript value if the text is a valid JSON text.
+
+            var j;
+
+            function walk(holder, key) {
+
+// The walk method is used to recursively walk the resulting structure so
+// that modifications can be made.
+
+                var k, v, value = holder[key];
+                if (value && typeof value === 'object') {
+                    for (k in value) {
+                        if (Object.hasOwnProperty.call(value, k)) {
+                            v = walk(value, k);
+                            if (v !== undefined) {
+                                value[k] = v;
+                            } else {
+                                delete value[k];
+                            }
+                        }
+                    }
+                }
+                return reviver.call(holder, key, value);
+            }
+
+
+// Parsing happens in four stages. In the first stage, we replace certain
+// Unicode characters with escape sequences. JavaScript handles many characters
+// incorrectly, either silently deleting them, or treating them as line endings.
+
+            text = String(text);
+            cx.lastIndex = 0;
+            if (cx.test(text)) {
+                text = text.replace(cx, function (a) {
+                    return '\\u' +
+                        ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
+                });
+            }
+
+// In the second stage, we run the text against regular expressions that look
+// for non-JSON patterns. We are especially concerned with '()' and 'new'
+// because they can cause invocation, and '=' because it can cause mutation.
+// But just to be safe, we want to reject all unexpected forms.
+
+// We split the second stage into 4 regexp operations in order to work around
+// crippling inefficiencies in IE's and Safari's regexp engines. First we
+// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
+// replace all simple value tokens with ']' characters. Third, we delete all
+// open brackets that follow a colon or comma or that begin the text. Finally,
+// we look to see that the remaining characters are only whitespace or ']' or
+// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
+
+            if (/^[\],:{}\s]*$/
+.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
+.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
+.replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
+
+// In the third stage we use the eval function to compile the text into a
+// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
+// in JavaScript: it can begin a block or an object literal. We wrap the text
+// in parens to eliminate the ambiguity.
+
+                j = eval('(' + text + ')');
+
+// In the optional fourth stage, we recursively walk the new structure, passing
+// each name/value pair to a reviver function for possible transformation.
+
+                return typeof reviver === 'function' ?
+                    walk({'': j}, '') : j;
+            }
+
+// If the text is not JSON parseable, then a SyntaxError is thrown.
+
+            throw new SyntaxError('JSON.parse');
+        };
+    }
+}());

admin_gmaps/templates/admin_gmaps/generic_widget.html

+<div id="{{ map_wrapper_id }}" style="width: 480px; float: left; text-align:right;">
+    <div id="{{ map_id }}" style="width: 480px; height: 270px;"></div>
+    <input type="hidden" id="{{ id }}" name="{{ name }}" value="{{ geojson }}" />
+</div>
+<script type="text/javascript">
+//<![CDATA[
+$(document).ready(function() {
+    // Elements
+    var map_container = document.getElementById('{{ map_id|escapejs }}');
+    var input_element = document.getElementById('{{ id|escapejs }}');
+    var wrapper = document.getElementById('{{ map_wrapper_id|escapejs }}');
+    var zoom_level = {{ zoom_level }};
+    var gc_region = "{{ gc_region|escapejs }}";
+    try {
+        var gc_field = document.getElementById('{{ gc_field|escapejs }}');
+    } catch(err) {
+        var gc_field = null;
+    }
+    // Get the default center of the map
+    var default_center_geometry = $.parseJSON("{{ default_center_json|escapejs }}");
+    var default_map_center = new google.maps.LatLng(default_center_geometry.coordinates[1], default_center_geometry.coordinates[0]);
+    // Create map
+    var map = new google.maps.Map(map_container, {
+        zoom: zoom_level,
+        center: default_map_center,
+        mapTypeId: google.maps.MapTypeId.ROADMAP, 
+        mapTypeControl: true, 
+    });
+    // Field value
+    try {
+        var value_geometry = $.parseJSON("{{ geojson|escapejs }}");
+    } catch(err) {
+        var value_geometry = null;
+    }
+    // Geocoding search
+    var append_geocode_search = function(marker) {
+        // If marker not null, change marker location to search result on click
+        // geocode callback
+        var gc_callback = function(gc_results, gc_status) {
+            if (gc_status == 'OK') {
+                /* To use with sprite images
+                var result_icon_size = new google.maps.Size(32, 32);
+                var result_icon_pos = new google.maps.Point(0, 32);
+                var result_icon = new google.maps.MarkerImage("http://maps.gstatic.com/intl/en_ALL/mapfiles/ms/iconm.png", result_icon_size, result_icon_pos);
+                */
+                mkr_image_icon = new google.maps.MarkerImage(
+                    "http://maps.gstatic.com/intl/en_ALL/mapfiles/ms/micons/blue-pushpin.png", 
+                    new google.maps.Size(24, 24), // Size (scaled)
+                    new google.maps.Point(0, 0), // Origin (scaled)
+                    new google.maps.Point(9, 24), // Anchor (scaled)
+                    new google.maps.Size(24, 24) // ScaledSize (for the whole image)
+                );
+                $.each(gc_results, function(i, gc_res) {
+                    // Extend map and add a search result marker
+                    map.fitBounds(map.getBounds().union(gc_res.geometry.viewport));
+                    var res_marker = new google.maps.Marker({
+                        map: map, 
+                        position: gc_res.geometry.location, 
+                        draggable: false, 
+                        visible: true, 
+                        title: gc_res.formatted_address, 
+                        icon: mkr_image_icon, 
+                        flat: true, 
+                        zIndex: 0, 
+                    });
+                    google.maps.event.addListener(res_marker, 'click', function(mouse_event) { 
+                        if (marker) {
+                            marker.setPosition(res_marker.position);
+                            marker.setVisible(true);
+                        }
+                        map.setCenter(res_marker.position);
+                        return false;
+                    });
+                });
+            } else {
+                alert("No se pudo encontrar la ubicación");
+            }
+        };
+        $(wrapper)
+        .append($('<a href="#" style="margin-left:10px;">Buscar</a>')
+            .click(function (event) {
+                var qry_def = "";
+                if (gc_field) {
+                    qry_def = $(gc_field).val();
+                }
+                var qry = prompt("Escriba la dirección", qry_def);
+                if (qry != "" && qry != null) {
+                    var gc = new google.maps.Geocoder();
+                    if (marker) {
+                        var start_location = marker.getPosition();
+                    } else {
+                        var start_location = map.getCenter();
+                    }
+                    var gc_req = {
+                        address: qry, 
+                        bounds: map.getBounds(), 
+                        location: start_location, 
+                        region: gc_region
+                    };
+                    gc.geocode(gc_req, gc_callback);
+                }
+            })
+        );
+    };
+    {% block widgetscript %}{% endblock %}
+});
+//]]>
+</script>

admin_gmaps/templates/admin_gmaps/point_widget.html

+{% extends "admin_gmaps/generic_widget.html" %}
+{# <script> #}
+{% block widgetscript %}
+    // Get options
+    if (value_geometry) {
+        var marker_latlng = new google.maps.LatLng(value_geometry.coordinates[1], value_geometry.coordinates[0]);
+        var marker_visible = true;
+    } else {
+        var marker_latlng = default_map_center;
+        var marker_visible = false;
+    }
+    // Create map & add events
+    map.setCenter(marker_latlng);
+    var marker = new google.maps.Marker({
+        map: map, 
+        position: marker_latlng, 
+        draggable: true, 
+        visible: marker_visible, 
+        icon: "http://maps.gstatic.com/intl/en_ALL/mapfiles/ms/micons/red-dot.png", 
+        zIndex: 10, 
+    });
+    google.maps.event.addListener(marker, 'position_changed', function() { 
+        marker_latlng = marker.getPosition();
+        value_geometry = {type: "Point", coordinates: [ marker_latlng.lng(), marker_latlng.lat() ] };
+        geojson = JSON.stringify(value_geometry);
+        $(input_element).val(geojson);
+    });
+    google.maps.event.addListener(map, 'click', function(mouse_event) { 
+        marker.setPosition(mouse_event.latLng); 
+        marker.setVisible(true); 
+    });
+    // Utilities
+    append_geocode_search(marker);
+{% endblock %}
+{# </script> #}

admin_gmaps/templates/admin_gmaps/sqpoly_widget.html

+{% extends "admin_gmaps/generic_widget.html" %}
+{# <script> #}
+{% block widgetscript %}
+    // Utility
+    var update_boundary = function (boundary, boundary_poly) {
+        // Point sequence sw, nw, ne, se, sw
+        sw = boundary.getSouthWest();
+        ne = boundary.getNorthEast();
+        nw = new google.maps.LatLng(ne.lat(), sw.lng());
+        se = new google.maps.LatLng(sw.lat(), ne.lng());
+        var boundary_path = [sw, nw, ne, se];
+        boundary_poly.setPath(boundary_path);
+        var value_geometry = {type: "Polygon", coordinates: [[
+            [sw.lng(), sw.lat()], 
+            [nw.lng(), nw.lat()], 
+            [ne.lng(), ne.lat()], 
+            [se.lng(), se.lat()], 
+            [sw.lng(), sw.lat()], 
+        ]]};
+        geojson = JSON.stringify(value_geometry);
+        $(input_element).val(geojson);
+    };
+    // Get options
+    if (value_geometry) {
+        // Point sequence sw, nw, ne, se, sw - We need at least 3 coordinates
+        if (value_geometry.coordinates[0].length >= 3) {
+            var sw_latlng = new google.maps.LatLng(value_geometry.coordinates[0][0][1], value_geometry.coordinates[0][0][0]);
+            var ne_latlng = new google.maps.LatLng(value_geometry.coordinates[0][2][1], value_geometry.coordinates[0][2][0]);
+            var boundary = new google.maps.LatLngBounds(sw_latlng, ne_latlng);
+        } else {
+            var boundary = new google.maps.LatLngBounds(default_map_center, default_map_center);
+        }
+    } else {
+        var boundary = new google.maps.LatLngBounds(default_map_center, default_map_center);
+    }
+    // Create boundary poligon
+    var boundary_poly = new google.maps.Polygon({
+        strokeColor: "#C1272D",
+        strokeOpacity: 0.8,
+        strokeWeight: 2,
+        fillColor: "#C1272D",
+        fillOpacity: 0.2, 
+        clickable: false, 
+    });
+    //Set map
+    boundary_poly.setMap(map);
+    update_boundary(boundary, boundary_poly);
+    map.setCenter(boundary.getCenter());
+    // Set event listeners
+    google.maps.event.addListener(map, 'click', function(mouse_event) { 
+        boundary.extend(mouse_event.latLng);
+        update_boundary(boundary, boundary_poly);
+    });
+    // Utilities
+    $(wrapper)
+    .append($('<a href="#" style="margin-left:10px;">Reset</a>')
+        .click(function (event) {
+            map_center = map.getCenter();
+            boundary = new google.maps.LatLngBounds(map_center, map_center);
+            update_boundary(boundary, boundary_poly);
+        })
+    );
+    append_geocode_search(null);
+{% endblock %}
+{# </script> #}

admin_gmaps/widgets.py

+# coding: utf-8
+
+from django.conf import settings
+from django.forms.widgets import Widget
+from django.contrib.admin import ModelAdmin
+from django.contrib.gis.admin.widgets import OpenLayersWidget
+from django.contrib.gis.gdal import OGRGeomType, OGRException
+from django.contrib.gis.db import models
+from django.contrib.gis.geos import GEOSGeometry, GEOSException, Point
+from django.contrib.gis.maps.google import GoogleZoom
+from django.template import loader
+
+# 
+# Geo widgets using Google Maps API v3.x
+# 
+
+try:
+    EXTERNAL_JS_GMAPS = settings.EXTERNAL_JS_GMAPS
+    EXTERNAL_JS_JQUERY = settings.EXTERNAL_JS_JQUERY
+except AttributeError:
+    EXTERNAL_JS_GMAPS = "http://maps.google.com/maps/api/js?sensor=false&region=AR"
+    EXTERNAL_JS_JQUERY = "https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js"
+
+EXTERNAL_JS_JSON = settings.STATIC_URL + "admin_gmaps/js/json2.js" # Best guess
+
+google_zoom_helper = GoogleZoom()
+
+class GMapWidget(Widget):
+    template = None
+    srid = 4326
+    default_zoom = 4
+    min_zoom = 16
+    gc_region = None
+    gc_field = None
+    default_center = None
+    
+    class Media:
+        js = (
+            EXTERNAL_JS_JQUERY, 
+            EXTERNAL_JS_GMAPS, 
+            EXTERNAL_JS_JSON, 
+        )
+    
+    def render(self, name, value, attrs=None):
+        final_attrs = self.build_attrs(attrs, name=name)
+        
+        # 
+        # Copying from django.contrib.gis.admin.widgets.OpenLayersWidget
+        # 
+        
+        # If a string reaches here (via a validation error on another
+        # field) then just reconstruct the Geometry.
+        if isinstance(value, basestring):
+            try:
+                value = GEOSGeometry(value)
+                # When it comes from a strig, it doesn't have a srid
+                value.srid = self.srid
+            except (GEOSException, ValueError):
+                value = None
+        if value:
+            # Transforming the geometry to the projection used on the
+            # OpenLayers map.
+            srid = self.srid
+            if value.srid != srid:
+                try:
+                    ogr = value.ogr
+                    ogr.transform(srid)
+                    wkt = ogr.wkt
+                    geojson = ogr.geojson
+                    zoom_level = google_zoom_helper.get_zoom(ogr)
+                except OGRException:
+                    wkt = ''
+                    geojson = ''
+                    zoom_level = self.default_zoom
+            else:
+                wkt = value.wkt
+                geojson = value.geojson
+                zoom_level = google_zoom_helper.get_zoom(value)
+        else:
+            wkt = ''
+            geojson = ''
+            zoom_level = self.default_zoom
+        
+        # If no center set, use 0,0
+        if not self.default_center:
+            self.default_center = Point(0,0)
+        
+        map_id = "{0}-gmap".format(final_attrs['id'])
+        map_wrapper_id = "{0}-wrapper".format(map_id)
+        zoom_level = min(self.min_zoom, zoom_level)
+        final_attrs.update({
+            'wkt': wkt, 
+            'geojson': geojson, 
+            'map_id': map_id, 
+            'map_wrapper_id': map_wrapper_id, 
+            'zoom_level': zoom_level, 
+            'default_center_json': self.default_center.geojson, 
+            'gc_region': self.gc_region or "", 
+            'gc_field': self.gc_field or "", 
+            
+        })
+        # JSONGeo - Point = { "type": "Point", "coordinates": [ longitude, latitude ] }
+        return loader.render_to_string(self.template, final_attrs)
+
+# 
+# Widget class broker
+# 
+
+def get_widget(db_field, map_default_center=None, squared_poly=False, 
+                 geocod_region=None, geocod_field=None):
+    """
+    map_default_center: A gis.geos.Point with the deault center for new maps (srid = 4326)
+    squared_poly: If the field type is poligon, force a square (to use for boundaries)
+    geocod_region: Country code (ex: AR, US, ...) used to hint geocoding
+    geocod_field: Id of the input field to use as default direction when searching places (geocoding)
+    """
+    
+    if db_field.geom_type == "POINT":
+        widget_template = "admin_gmaps/point_widget.html"
+    elif db_field.geom_type == "POLYGON" and squared_poly:
+        widget_template = "admin_gmaps/sqpoly_widget.html"
+    else:
+        widget_template = "admin_gmaps/generic_widget.html"
+    
+    class Widget(GMapWidget):
+        template = widget_template
+        default_center = map_default_center
+        gc_region = geocod_region
+        gc_field = geocod_field
+    
+    return Widget

admin_helpers/__init__.py

Empty file added.

admin_helpers/templatetags/__init__.py

Empty file added.

admin_helpers/templatetags/admin_form_helpers.py

+from django.template import Library
+from django.contrib.admin.helpers import Fieldset, InlineFieldset, AdminReadonlyField, AdminField
+from django.conf import settings
+from django.contrib.admin.helpers import AdminField, AdminReadonlyField
+
+register = Library()
+
+@register.filter(name="adminform_get_fieldset")
+def adminform_get_fieldset(adminform, index):
+    # Code from AdminForm.__iter__ in /contrib/admin/helpers.py
+    index = int(index)
+    name, options = adminform.fieldsets[index]
+    return Fieldset(adminform.form, 
+                    name, 
+                    readonly_fields=adminform.readonly_fields,
+                    model_admin=adminform.model_admin, 
+                    **options
+                    )
+
+@register.filter(name="fieldset_get_field")
+def fieldset_get_field(fieldset, name):
+    # Code from Fieldline in /contrib/admin/helpers.py
+    if name in fieldset.readonly_fields:
+        return AdminReadonlyField(fieldset.form, 
+                                  name, 
+                                  is_first=True,
+                                  model_admin=fieldset.model_admin, 
+                                  )
+    else:
+        return AdminField(fieldset.form, 
+                          name, 
+                          is_first=True,
+                          )
+
+@register.filter(name="admininline_get_formset")
+def admininline_get_formset(inline_admin_formsets, index):
+    # Code from InlineAdminForm.__iter__ in /contrib/admin/helpers.py
+    index = int(index)
+    return inline_admin_formsets[index]
+
+@register.filter(name="admininlineform_get_field")
+def admininlineform_get_field(inline_admin_form, fieldname):
+    for fieldset in inline_admin_form:
+        for line in fieldset:
+            for adminfield in line:
+                if (isinstance(adminfield, AdminField) and 
+                    adminfield.field.name == fieldname
+                    ):
+                    return adminfield.field
+    return ""
+
+@register.filter(name="get_class_name")
+def get_class_name(object):
+    return object.__class__.__name__

e42_toolbox/validators.py

         # Set limit display prefix
         self.limit_prefix = _IMAGE_VALIDATOR_TYPE_LIMIT_DISPLAY.get(validation_type, u"")
         # Set file type
-        self.check_types = [x.lower() for x in allowed_types]
+        self.check_types = [x.lower().strip(".") for x in allowed_types]
 
     def  __call__(self, value):
         if self.check_width or self.check_height or self.check_proportions: