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Diffstat (limited to 'view/theme/diabook/js/jquery.mapquery.mqLayerManager.js')
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1 files changed, 317 insertions, 0 deletions
diff --git a/view/theme/diabook/js/jquery.mapquery.mqLayerManager.js b/view/theme/diabook/js/jquery.mapquery.mqLayerManager.js new file mode 100644 index 000000000..22dec2170 --- /dev/null +++ b/view/theme/diabook/js/jquery.mapquery.mqLayerManager.js @@ -0,0 +1,317 @@ +/* Copyright (c) 2011 by MapQuery Contributors (see AUTHORS for + * full list of contributors). Published under the MIT license. + * See https://github.com/mapquery/mapquery/blob/master/LICENSE for the + * full text of the license. */ + +/** +#jquery.mapquery.mqLayerManager.js +The file containing the mqLayerManager Widget + +### *$('selector')*.`mqLayerManager([options])` +_version added 0.1_ +####**Description**: create a widget to manage layers + + + **options**: + - **map**: the mapquery instance + - **title**: Title that will be displayed at the top of the + layer manager (default: Layer Manager) + + +>Returns: widget + +>Requires: jquery.mapquery.legend.js + + +The mqLayerManager allows us to control the order, opacity and visibility +of layers. We can also remove layers. It also shows the legend of the layer if +available and the error messages provided by the legend plugin. It listens to +layerchange event for order, transparancy and opacity changes. It listens to +addlayer and removelayer events to keep track which layers are on the map. + + + $('#layermanager').mqLayerManager({map:'#map'}); + + + */ +(function($) { +$.template('mqLayerManager', + '<div class="mq-layermanager ui-widget-content ">'+ + '</div>'); + +$.template('mqLayerManagerElement', + '<div class="mq-layermanager-element ui-widget-content ui-corner-all" id="mq-layermanager-element-${id}">'+ + '<div class="mq-layermanager-element-header ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix">'+ + '<span class="mq-layermanager-label ui-dialog-title">${label}</span>'+ + '<a class="ui-dialog-titlebar-close ui-corner-all" href="#" role="button">'+ + '<span class="ui-icon ui-icon-closethick">close</span></a></div>'+ + '<div class="mq-layermanager-element-content">'+ + '<div class="mq-layermanager-element-visibility">'+ + '<input type="checkbox" class="mq-layermanager-element-vischeckbox" id="${id}-visibility" {{if visible}}checked="${visible}"{{/if}} />'+ + '<div class="mq-layermanager-element-slider-container">'+ + '<div class="mq-layermanager-element-slider"></div></div>'+ + '</div>'+ + '<div class="mq-layermanager-element-legend">'+ + '{{if imgUrl}}'+ + '<img src="${imgUrl}" style="opacity:${opacity}"/>'+ + '{{/if}}'+ + '{{if errMsg}}'+ + '${errMsg}'+ + '{{/if}}'+ + '</div>'+ + '</div>'+ + '</div>'); + +$.widget("mapQuery.mqLayerManager", { + options: { + // The MapQuery instance + map: undefined, + + // Title that will be displayed at the top of the popup + title: "Layer Manager" + }, + _create: function() { + var map; + var zoom; + var numzoomlevels; + var self = this; + var element = this.element; + + //get the mapquery object + map = $(this.options.map).data('mapQuery'); + + this.element.addClass('ui-widget ui-helper-clearfix ' + + 'ui-corner-all'); + + var lmElement = $.tmpl('mqLayerManager').appendTo(element); + element.find('.ui-icon-closethick').button(); + + lmElement.sortable({ + axis:'y', + handle: '.mq-layermanager-element-header', + update: function(event, ui) { + var layerNodes = ui.item.siblings().andSelf(); + var num = layerNodes.length-1; + layerNodes.each(function(i) { + var layer = $(this).data('layer'); + var pos = num-i; + self._position(layer, pos); + }); + } + }); + + //these layers are already added to the map as such won't trigger + //and event, we call the draw function directly + $.each(map.layers().reverse(), function(){ + self._layerAdded(lmElement, this); + }); + + element.delegate('.mq-layermanager-element-vischeckbox', + 'change',function() { + var checkbox = $(this); + var element = checkbox.parents('.mq-layermanager-element'); + var layer = element.data('layer'); + var self = element.data('self'); + self._visible(layer,checkbox.attr('checked')); + }); + + element.delegate('.ui-icon-closethick', 'click', function() { + var control = $(this).parents('.mq-layermanager-element'); + self._remove(control.data('layer')); + }); + + //binding events + map.bind("mqAddLayer", + {widget:self,control:lmElement}, + self._onLayerAdd); + + map.bind("mqRemoveLayer", + {widget:self,control:lmElement}, + self._onLayerRemove); + + map.bind("changelayer", + {widget:self,map:map,control:lmElement}, + self._onLayerChange); + + map.bind("moveend", + {widget:self,map:map,control:lmElement}, + self._onMoveEnd); + }, + _destroy: function() { + this.element.removeClass(' ui-widget ui-helper-clearfix ' + + 'ui-corner-all') + .empty(); + }, + //functions that actually change things on the map + //call these from within the widget to do stuff on the map + //their actions will trigger events on the map and in return + //will trigger the _layer* functions + _add: function(map,layer) { + map.layers(layer); + }, + + _remove: function(layer) { + layer.remove(); + }, + + _position: function(layer, pos) { + layer.position(pos); + }, + + _visible: function(layer, vis) { + layer.visible(vis); + }, + + _opacity: function(layer,opac) { + layer.opacity(opac); + }, + + //functions that change the widget + _layerAdded: function(widget, layer) { + var self = this; + var error = layer.legend().msg; + var url; + switch(error){ + case '': + url =layer.legend().url; + if(url==''){error='No legend for this layer';} + break; + case 'E_ZOOMOUT': + error = 'Please zoom out to see this layer'; + break; + case 'E_ZOOMIN': + error = 'Please zoom in to see this layer'; + break; + case 'E_OUTSIDEBOX': + error = 'This layer is outside the current view'; + break; + } + + var layerElement = $.tmpl('mqLayerManagerElement',{ + id: layer.id, + label: layer.label, + position: layer.position(), + visible: layer.visible(), + imgUrl: url, + opacity: layer.visible()?layer.opacity():0, + errMsg: error + }) + // save layer layer in the DOM, so we can easily + // hide/show/delete the layer with live events + .data('layer', layer) + .data('self',self) + .prependTo(widget); + + $(".mq-layermanager-element-slider", layerElement).slider({ + max: 100, + step: 1, + value: layer.visible()?layer.opacity()*100:0, + slide: function(event, ui) { + var layer = layerElement.data('layer'); + var self = layerElement.data('self'); + self._opacity(layer,ui.value/100); + }, + //using the slide event to check for the checkbox often gives errors. + change: function(event, ui) { + var layer = layerElement.data('layer'); + var self = layerElement.data('self'); + if(ui.value>=0.01) { + if(!layer.visible()){layer.visible(true);} + } + if(ui.value<0.01) { + if(layer.visible()){layer.visible(false);} + } + } + }); + }, + + _layerRemoved: function(widget, id) { + var control = $("#mq-layermanager-element-"+id); + control.fadeOut(function() { + $(this).remove(); + }); + }, + + _layerPosition: function(widget, layer) { + var layerNodes = widget.element.find('.mq-layermanager-element'); + var num = layerNodes.length-1; + var tmpNodes = []; + tmpNodes.length = layerNodes.length; + layerNodes.each(function() { + var layer = $(this).data('layer'); + var pos = num-layer.position(); + tmpNodes[pos]= this; + }); + for (i=0;i<tmpNodes.length;i++) { + layerNodes.parent().append(tmpNodes[i]); + } + }, + + _layerVisible: function(widget, layer) { + var layerElement = + widget.element.find('#mq-layermanager-element-'+layer.id); + var checkbox = + layerElement.find('.mq-layermanager-element-vischeckbox'); + checkbox[0].checked = layer.visible(); + //update the opacity slider as well + var slider = layerElement.find('.mq-layermanager-element-slider'); + var value = layer.visible()?layer.opacity()*100: 0; + slider.slider('value',value); + + //update legend image + layerElement.find('.mq-layermanager-element-legend img').css( + {visibility:layer.visible()?true:'hidden'}); + }, + + _layerOpacity: function(widget, layer) { + var layerElement = widget.element.find( + '#mq-layermanager-element-'+layer.id); + var slider = layerElement.find( + '.mq-layermanager-element-slider'); + slider.slider('value',layer.opacity()*100); + //update legend image + layerElement.find( + '.mq-layermanager-element-legend img').css( + {opacity:layer.opacity()}); + }, + + _moveEnd: function (widget,lmElement,map) { + lmElement.empty(); + $.each(map.layers().reverse(), function(){ + widget._layerAdded(lmElement, this); + }); + }, + + //functions bind to the map events + _onLayerAdd: function(evt, layer) { + evt.data.widget._layerAdded(evt.data.control,layer); + }, + + _onLayerRemove: function(evt, id) { + evt.data.widget._layerRemoved(evt.data.control,id); + }, + + _onLayerChange: function(evt, data) { + var layer; + //since we don't know which layer we get we've to loop through + //the openlayers.layer.ids to find the correct one + $.each(evt.data.map.layers(), function(){ + if(this.olLayer.id == data.layer.id) {layer=this;} + }); + //(name, order, opacity, params, visibility or attribution) + switch(data.property) { + case 'opacity': + evt.data.widget._layerOpacity(evt.data.widget,layer); + break; + case 'order': + evt.data.widget._layerPosition(evt.data.widget,layer); + break; + case 'visibility': + evt.data.widget._layerVisible(evt.data.widget,layer); + break; + } + }, + _onMoveEnd: function(evt) { + evt.data.widget._moveEnd(evt.data.widget,evt.data.control,evt.data.map); + } +}); +})(jQuery); |