oxjs/source/js/Ox.Map.js
2011-04-23 00:54:53 +02:00

951 lines
28 KiB
JavaScript

//vim: et:ts=4:sw=4:sts=4:ft=js
Ox.Map = function(options, self) {
var self = self || {}
that = new Ox.Element('div', self)
.defaults({
// fixme: isClickable? hasZoombar?
clickable: false,
editable: false,
findPlaceholder: 'Find',
labels: false,
markers: 100,
places: [],
selected: null,
statusbar: false,
toolbar: false,
zoombar: false
})
.options(options || {})
.addClass('OxMap')
.click(function(e) {
!$(e.target).is('input') && that.gainFocus();
})
.bindEvent({
key_0: function() {
that.panToPlace()
},
key_down: function() {
pan(0, 1);
},
key_enter: pressEnter,
key_escape: pressEscape,
key_equal: function() {
zoom(1);
},
key_l: toggleLabels,
key_left: function() {
pan(-1, 0);
},
key_meta: function() {
self.metaKey = true;
$(document).one({
keyup: function() {
self.metaKey = false;
}
});
},
key_minus: function() {
zoom(-1);
},
key_right: function() {
pan(1, 0);
},
key_shift: function() {
self.shiftKey = true;
$(document).one({
keyup: function() {
self.shiftKey = false;
}
});
},
key_shift_down: function() {
pan(0, 2);
},
key_shift_0: function() {
that.zoomToPlace();
},
key_shift_equal: function() {
zoom(2)
},
key_shift_left: function() {
pan(-2, 0);
},
key_shift_minus: function() {
zoom(-2);
},
key_shift_right: function() {
pan(2, 0);
},
key_shift_up: function() {
pan(0, -2);
},
key_up: function() {
pan(0, -1);
},
key_z: undo
});
self.mapHeight = getMapHeight();
self.minZoom = getMinZoom();
self.scaleMeters = [
50000000, 20000000, 10000000,
5000000, 2000000, 1000000,
500000, 200000, 100000,
50000, 20000, 10000,
5000, 2000, 1000,
500, 200, 100,
50, 20, 10
];
Ox.extend(self, {
metaKey: false,
resultPlace: null,
shiftKey: false
});
if (self.options.toolbar) {
self.$toolbar = new Ox.Bar({
size: 24
})
.appendTo(that);
self.$labelsButton = new Ox.Button({
title: 'Show Labels',
width: 96
})
.css({float: 'left', margin: '4px'})
.bindEvent({
click: toggleLabels
})
.appendTo(self.$toolbar)
self.$findInput = new Ox.Input({
clear: true,
placeholder: self.options.findPlaceholder,
width: 192
})
.css({float: 'right', margin: '4px'})
.bindEvent({
submit: submitFind
})
.appendTo(self.$toolbar)
}
self.$map = new Ox.Element('div')
.css({
left: 0,
top: self.options.toolbar * 24 + 'px',
right: 0,
bottom: self.options.zoombar * 16 + self.options.statusbar * 24 + 'px'
})
.appendTo(that);
if (self.options.zoombar) {
self.$zoombar = new Ox.Bar({
size: 16
})
.css({
bottom: self.options.statusbar * 24 + 'px'
})
.appendTo(that);
}
if (self.options.statusbar) {
self.$statusbar = new Ox.Bar({
size: 24
})
.css({
bottom: 0
})
.appendTo(that);
self.$placeNameInput = new Ox.Input({
placeholder: 'Name',
width: 96
})
//.css({position: 'absolute', left: 4, top: 4})
.css({float: 'left', margin: '4px 1px 4px 4px'})
.appendTo(self.$statusbar);
self.$placeGeonameInput = new Ox.Input({
placeholder: 'Geoname',
width: 96
})
//.css({position: 'absolute', left: 104, top: 4})
.css({float: 'left', margin: '4px 1px 4px 4px'})
.appendTo(self.$statusbar);
self.$placeButton = new Ox.Button({
title: 'New Place',
width: 96
})
.css({float: 'right', margin: '4px 4px 4px 2px'})
.bindEvent({
click: clickPlaceButton
})
.appendTo(self.$statusbar);
}
self.$navigationButtons = {
'center': new Ox.Button({
title: 'close',
type: 'image'
})
.addClass('OxMapButton')
.css({
left: '24px',
top: '24px'
}),
'east': new Ox.Button({
title: 'right',
type: 'image'
})
.addClass('OxMapButton')
.css({
left: '44px',
top: '24px',
}),
'north': new Ox.Button({
title: 'up',
type: 'image'
})
.addClass('OxMapButton')
.css({
left: '24px',
top: '4px',
}),
'south': new Ox.Button({
title: 'down',
type: 'image'
})
.addClass('OxMapButton')
.css({
left: '24px',
top: '44px',
}),
'west': new Ox.Button({
title: 'left',
type: 'image'
})
.addClass('OxMapButton')
.css({
left: '4px',
top: '24px',
})
};
self.$scaleLabel = new Ox.Label({
textAlign: 'center',
title: '...'
})
.addClass('OxMapLabel')
.css({
right: '4px',
top: '4px'
});
if (!window.googleCallback) {
window.googleCallback = function() {
delete window.googleCallback;
initMap();
};
$.getScript('http://maps.google.com/maps/api/js?callback=googleCallback&sensor=false');
} else {
(function interval() {
window.google ? initMap() : setTimeout(interval, 100);
}());
}
function addPlaceToMap(place) {
// via find, click, or new place button
var exists = false;
if (!place) {
var bounds = self.map.getBounds(),
center = self.map.getCenter(),
southwest = new google.maps.LatLngBounds(
bounds.getSouthWest(), center
).getCenter(),
northeast = new google.maps.LatLngBounds(
center, bounds.getNorthEast()
).getCenter(),
place = new Ox.MapPlace({
countryCode: '',
editable: true,
geoname: '',
id: '_' + Ox.uid(), // fixme: stupid
lat: center.lat(),
lng: center.lng(),
map: that,
name: '',
south: southwest.lat(),
west: southwest.lng(),
north: northeast.lat(),
east: northeast.lng()
});
}
Ox.forEach(self.places, function(p, i) {
if (place.bounds.equals(p.bounds)) {
place = p;
exists = true;
return false;
}
});
if (!exists) {
self.resultPlace && self.resultPlace.removeElement();
self.resultPlace = place;
place.add();
}
selectPlace(place.id);
}
function addPlaceToPlaces() {
var place = getSelectedPlace();
if (self.options.selected == place.id) {
self.options.selected = place.id.substr(1);
}
place.id = place.id.substr(1); // fixme: NOT SAFE!
place.name = self.$placeNameInput.value();
place.geoname = self.$placeGeonameInput.value();
place.countryCode = Ox.getCountryCode(place.geoname);
place.marker.update();
self.places.push(place);
self.resultPlace = null;
that.triggerEvent('addplace', place)
Ox.print('SSSS', self.options.selected)
}
function boundsChanged() {
setScale();
self.boundsChanged = true;
}
function canContain(outerBounds, innerBounds) {
var outerSpan = outerBounds.toSpan(),
innerSpan = innerBounds.toSpan();
return outerSpan.lat() > innerSpan.lat() &&
outerSpan.lng() > innerSpan.lng();
}
function centerChanged() {
self.center = self.map.getCenter();
self.centerChanged = true;
}
function changeZoom(event, data) {
self.map.setZoom(data.value);
}
function clickMap(event) {
Ox.print('Ox.Map clickMap')
if (self.options.clickable/* && !editing()*/) {
getPlaceByLatLng(event.latLng, self.map.getBounds(), function(place) {
if (place) {
addPlaceToMap(place);
//selectPlace(place.id);
} else {
selectPlace(null);
}
});
}
}
function clickPlaceButton() {
var place = getSelectedPlace(),
title = self.$placeButton.options('title');
if (title == 'New Place') {
addPlaceToMap();
} else if (title == 'Add Place') {
addPlaceToPlaces();
} else if (title == 'Remove Place') {
}
}
function constructZoomInput() {
Ox.print('constructZoomInput', self.minZoom, self.maxZoom)
if (self.options.zoombar) {
self.$zoomInput && self.$zoomInput.removeElement();
self.$zoomInput = new Ox.Range({
arrows: true,
max: self.maxZoom,
min: self.minZoom,
size: that.width(),
thumbSize: 32,
thumbValue: true,
value: self.map.getZoom()
})
.bindEvent({
change: changeZoom
})
.appendTo(self.$zoombar);
}
}
function editing() {
var place = getSelectedPlace();
return place && place.editing;
}
function getElevation(point, callback) {
// fixme: unused
if (arguments.length == 1) {
callback = point;
point = self.map.getCenter();
}
self.elevationService.getElevationForLocations({
locations: [point]
}, function(data) {
callback(data.elevation);
});
}
function getMapHeight() {
return self.options.height -
self.options.statusbar * 24 -
self.options.toolbar * 24 -
self.options.zoombar * 16;
}
function getMapType() {
return self.options.labels ? 'HYBRID' : 'SATELLITE'
}
function getMaxZoom(point, callback) {
if (arguments.length == 1) {
callback = point;
point = self.map.getCenter();
}
self.maxZoomService.getMaxZoomAtLatLng(point, function(data) {
callback(data.status == 'OK' ? data.zoom : null);
});
}
function getMinZoom() {
return 0;
return Math.ceil(
Ox.log(self.mapHeight / Ox.MAP_TILE_SIZE, 2)
);
}
function getPlaceById(id) {
var place = Ox.getObjectById(self.places, id);
if (!place && self.resultPlace && self.resultPlace.id == id) {
place = self.resultPlace;
}
Ox.print('getPlaceById', id, place)
return place;
}
function getPlaceByLatLng(latlng, bounds, callback) {
Ox.print('ll b', latlng, bounds)
var callback = arguments.length == 3 ? callback : bounds,
bounds = arguments.length == 3 ? bounds : null;
self.geocoder.geocode({
latLng: latlng
}, function(results, status) {
Ox.print('results', results)
var length = results.length;
if (status == google.maps.GeocoderStatus.OK) {
if (status != google.maps.GeocoderStatus.ZERO_RESULTS) {
if (bounds) {
Ox.forEach(results.reverse(), function(result, i) {
if (
i == length - 1 ||
canContain(bounds, result.geometry.bounds || result.geometry.viewport)
) {
callback(new Ox.MapPlace(parseGeodata(results[i])));
return false;
}
});
} else {
callback(new Ox.MapPlace(parseGeodata(results[0])));
}
} else {
callback(null);
}
} else {
//Ox.print('geocode failed:', status);
callback(null);
}
});
}
function getPlaceByName(name, callback) {
self.geocoder.geocode({
address: name
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (status != google.maps.GeocoderStatus.ZERO_RESULTS) {
Ox.print('GEOCODER RESULT', results[0])
callback(new Ox.MapPlace(parseGeodata(results[0])));
} else {
callback(null);
}
} else {
Ox.print('geocode failed:', status);
callback(null);
}
});
}
function getPositionByName(name) {
var position = -1;
Ox.forEach(self.options.places, function(place, i) {
if (place.name == name) {
position = i;
return false;
}
});
return position;
}
function getSelectedMarker() {
// needed in case self.options.selected
// is changed from outside
var id = null;
if (self.resultPlace && self.resultPlace.selected) {
id = self.resultPlace.id;
} else {
Ox.forEach(self.places, function(place) {
if (place.selected) {
id = place.id;
return false;
}
});
}
return id;
}
function getSelectedPlace() {
return self.options.selected ?
getPlaceById(self.options.selected) : null;
}
function initMap() {
var mapBounds;
updateFormElements();
self.elevationService = new google.maps.ElevationService();
self.geocoder = new google.maps.Geocoder();
self.maxZoomService = new google.maps.MaxZoomService();
self.places = [];
self.options.places.forEach(function(place, i) {
var bounds = new google.maps.LatLngBounds(
new google.maps.LatLng(place.south, place.west),
new google.maps.LatLng(place.north, place.east)
);
if (Ox.isUndefined(place.id)) {
place.id = Ox.uid();
}
mapBounds = i == 0 ? bounds : mapBounds.union(bounds);
});
self.center = mapBounds ? mapBounds.getCenter() : new google.maps.LatLng(0, 0);
self.zoom = 1; // fixme: should depend on height
that.map = self.map = new google.maps.Map(self.$map.$element[0], {
center: self.center,
disableDefaultUI: true,
disableDoubleClickZoom: true,
mapTypeId: google.maps.MapTypeId[getMapType()],
zoom: self.zoom
});
google.maps.event.addListener(self.map, 'bounds_changed', boundsChanged);
google.maps.event.addListener(self.map, 'center_changed', centerChanged);
google.maps.event.addListener(self.map, 'click', clickMap);
google.maps.event.addListener(self.map, 'idle', mapChanged);
google.maps.event.addListener(self.map, 'zoom_changed', zoomChanged);
google.maps.event.addListenerOnce(self.map, 'tilesloaded', tilesLoaded);
mapBounds && self.map.fitBounds(mapBounds);
/*
setTimeout(function() {
}, 1000);
*/
self.options.places.forEach(function(place, i) {
self.places[i] = new Ox.MapPlace(Ox.extend({
map: that
}, place))/*.add()*/;
});
google.maps.event.trigger(self.map, 'resize');
//that.gainFocus();
that.triggerEvent('load');
function tilesLoaded() {
// fixme: can add earlier, use don't replace map contents option
Ox.forEach(self.$navigationButtons, function(button) {
button.appendTo(self.$map);
});
self.$scaleLabel.appendTo(self.$map);
}
}
function mapChanged() {
// gets called after panning or zooming
Ox.print('mapChanged');
var bounds;
if (self.boundsChanged) {
bounds = self.map.getBounds();
self.places.sort(function(a, b) {
var sort = {
a: a.selected ? Infinity :
(bounds.contains(a.center) ? a.size : -Infinity),
b: b.selected ? Infinity :
(bounds.contains(b.center) ? b.size : -Infinity),
};
return sort.b - sort.a;
}).forEach(function(place, i) {
if (i < self.options.markers && !place.visible) {
place.add();
} else if (i >= self.options.markers && place.visible) {
place.remove();
}
});
self.boundsChanged = false;
}
if (self.centerChanged) {
getMaxZoom(function(zoom) {
if (zoom != self.maxZoom) {
self.maxZoom = zoom;
if (self.map.getZoom() > zoom) {
self.map.setZoom(zoom);
}
constructZoomInput();
}
});
self.centerChanged = false;
}
if (self.zoomChanged) {
self.zoomChanged = false;
}
}
function pan(x, y) {
self.map.panBy(x * self.$map.width() / 2, y * self.$map.height() / 2);
};
function parseGeodata(data) {
var bounds = data.geometry.bounds || data.geometry.viewport,
place = {
components: data.address_components,
countryCode: getCountryCode(data.address_components),
east: bounds.getNorthEast().lng(),
editable: self.options.editable,
fullGeoname: getFullGeoname(data.address_components),
geoname: data.formatted_address,
id: '_' + Ox.uid(),
map: that,
name: data.formatted_address.split(', ')[0],
north: bounds.getNorthEast().lat(),
south: bounds.getSouthWest().lat(),
types: data.types.map(function(type) {
return Ox.toTitleCase(type.replace(/_/g, ' '));
}),
west: bounds.getSouthWest().lng()
};
function getCountryCode(components) {
countryCode = '';
Ox.forEach(components, function(component) {
if (component.types.indexOf('country') > -1) {
countryCode = component.short_name;
return false;
}
});
return countryCode;
}
function getFullGeoname(components) {
var country = false;
return components.map(function(component, i) {
var name = component.long_name;
if (i && components[i - 1].types.indexOf('country') > -1) {
country = true;
}
return !country && (
i == 0 || name != components[i - 1].long_name
) ? name : null;
}).join(', ')
}
return place;
}
function pressEnter() {
var place = getSelectedPlace();
if (place) {
if (place.editing) {
place.submit();
} else {
place.edit();
}
} else if (self.resultPlace) {
selectPlace(self.resultPlace.id)
}
}
function pressEscape() {
var place = getSelectedPlace();
if (place) {
if (place.editing) {
place.cancel();
} else {
selectPlace(null);
}
} else if (self.resultPlace) {
self.resultPlace.remove();
self.resultPlace = null;
}
}
function removePlace(id) {
}
function reset() {
//Ox.print(self.map.getZoom(), self.zoom);
self.map.getZoom() == self.zoom ?
self.map.panTo(self.center) :
self.map.fitBounds(self.bounds);
}
function resizeMap() {
/*
Ox.print('resizeMap', self.options.width, self.options.height);
var center = self.map.getCenter();
self.mapHeight = getMapHeight();
self.minZoom = getMinZoom();
that.css({
height: self.options.height + 'px',
width: self.options.width + 'px'
});
self.$map.css({
height: self.mapHeight + 'px',
width: self.options.width + 'px'
});
google.maps.event.trigger(self.map, 'resize');
self.map.setCenter(center);
*/
}
function selectPlace(id) {
var place,
selected = getSelectedMarker();
Ox.print('Ox.Map selectPlace()', id, selected);
if (id != selected) {
place = getPlaceById(selected);
place && place.deselect();
place = getPlaceById(id);
place && place.select();
self.options.selected = id;
setStatus();
that.triggerEvent('selectplace', place);
}
};
function getMetersPerPixel() {
var mapWidth = self.$map.width(),
span = self.map.getBounds().toSpan().lng();
if (span >= 360) {
span = 360 * mapWidth / Ox.MAP_TILE_SIZE;
}
return span * Ox.getMetersPerDegree(self.map.getCenter().lat()) / mapWidth;
}
function setScale() {
var metersPerPixel = getMetersPerPixel();
Ox.forEach(self.scaleMeters, function(meters) {
var scaleWidth = Math.round(meters / metersPerPixel);
if (scaleWidth <= 256) {
self.$scaleLabel
.options({
title: '\u2190 ' + (
meters > 1000 ? Ox.formatNumber(meters / 1000) + ' k' : meters + ' '
) + 'm \u2192'
})
.css({
width: (scaleWidth - 10) + 'px'
})
return false;
}
});
}
function setStatus() {
Ox.print('setStatus()', self.options.selected)
var disabled, place, title;
if (self.options.statusbar) {
place = getSelectedPlace();
if (place) {
title = place.id[0] == '_' ? 'Add Place' : 'Remove Place';
} else {
title = 'New Place';
}
disabled = place && !place.editable;
self.$placeNameInput.options({
disabled: disabled,
value: place ? place.name : ''
});
self.$placeGeonameInput.options({
disabled: disabled,
value: place ? place.geoname : ''
});
self.$placeButton.options({
disabled: disabled,
title: title
});
}
Ox.print('STATUS DONE');
}
function submitFind(event, data) {
that.findPlace(data.value, function(place) {
setStatus(place);
});
}
function toggleLabels() {
self.options.labels = !self.options.labels
self.map.setMapTypeId(google.maps.MapTypeId[getMapType()]);
self.$labelsButton.options({
title: self.$labelsButton.options('title') == 'Show Labels' ?
'Hide Labels' : 'Show Labels'
});
}
function undo() {
Ox.print('Map undo')
var place = getSelectedPlace();
place.editing && place.undo();
}
function updateFormElements() {
var width = that.width();
self.$zoomInput && constructZoomInput();
self.$placeNameInput.options({
width: Math.floor((width - 112) / 2)
});
self.$placeGeonameInput.options({
width: Math.ceil((width - 112) / 2)
});
}
function zoom(z) {
self.map.setZoom(self.map.getZoom() + z);
}
function zoomChanged() {
var zoom = self.map.getZoom();
if (zoom < self.minZoom) {
self.map.setZoom(self.minZoom);
} else if (self.maxZoom && zoom > self.maxZoom) {
self.map.setZoom(self.maxZoom);
} else {
self.zoomChanged = true;
self.$zoomInput && self.$zoomInput.options({value: zoom});
that.triggerEvent('zoom', {
value: zoom
});
}
}
function zoomToPlace() {
Ox.print('zoomToPlace')
if (self.options.selected !== null) {
self.map.fitBounds(getPlaceById(self.options.selected).bounds);
}
}
self.onChange = function(key, value) {
/*if (key == 'height' || key == 'width') {
resizeMap();
} else */if (key == 'places') {
loadPlaces();
} else if (key == 'selected') {
selectPlace(value);
} else if (key == 'type') {
}
};
that.getKey = function() {
var key = null;
if (self.shiftKey) {
key = 'shift'
} else if (self.metaKey) {
key = 'meta'
}
return key;
}
that.editPlace = function() {
getPlaceById(self.options.selected).edit();
return that;
}
that.findPlace = function(name, callback) {
getPlaceByName(name, function(place) {
if (place) {
addPlaceToMap(place);
self.map.fitBounds(place.bounds);
}
callback(place);
});
};
that.panToPlace = function() {
Ox.print('panToPlace:', self.options.selected)
var place = getSelectedPlace();
place && self.map.panTo(place.center);
return that;
};
that.removePlace = function(id) {
return that;
};
that.resizeMap = function() {
/*
Ox.print('resizeMap', self.options.width, self.options.height);
var center = self.map.getCenter();
self.mapHeight = getMapHeight();
self.minZoom = getMinZoom();
that.css({
height: self.options.height + 'px',
width: self.options.width + 'px'
});
self.$map.css({
height: self.mapHeight + 'px',
width: self.options.width + 'px'
});
google.maps.event.trigger(self.map, 'resize');
self.map.setCenter(center);
*/
/*
Ox.print('Ox.Map.resizeMap()');
var center = self.map.getCenter();
self.options.height = that.$element.height();
self.options.width = that.$element.width();
Ox.print(self.options.width, self.options.height)
self.$map.css({
height: self.mapHeight + 'px',
width: self.options.width + 'px'
});
google.maps.event.trigger(self.map, 'resize');
self.map.setCenter(center);
self.options.zoombar && self.$zoomInput.options({
size: self.options.width
});
*/
updateFormElements();
google.maps.event.trigger(self.map, 'resize');
return that;
}
that.zoomToPlace = function() {
Ox.print('zoomToPlace')
var place = getSelectedPlace();
place && self.map.fitBounds(place.bounds);
return that;
};
that.zoom = function(value) {
self.map.setZoom(value);
return that;
};
return that;
};