I have an Ext checkbox that add a layer on my OpenLayers map. When a layer is added from map.addLayer, it appears at the end (on top) of the layers (we can see this in the layerSwitcher). I simply want to re-order them after I create the new layer. The problem is coming from the checkbox. I launch a function when checked, but the map won't be added until the function has ended (I don't know why). So when I add the line to re-order the maps at the end of the function, it doesn't re-order the maps at all (it seems this is because the same is still not created while inside the function).
This is the code of my checkbox:
new Ext.form.Checkbox({
title: extjs_gui_products_analyses_checkbox_title,
id: 'analyses_checkbox_extjs',
boxLabel: extjs_gui_products_analyses_checkbox_label,
inputValue: extjs_gui_products_analyses_checkbox_label,
listeners: {
check: addAnalyseLayer // reorderGmlLayersOnTop
}
})
I thought I could add the line to re-order in another function then, and call it just after? So I made a function named reorderGmlLayersOnTop and tried to add it as another check: reorderGmlLayersOnTop. It's not working (it crashes), so I suppose the synthax is wrong. I checked the Ext manual and it never says we can actually call two functions. Is there a way to call two functions? And if yes, what would be the syntax to do so?
If not, would you have another idea to re-order the layers after the checkbox is checked?
This is the code from my function that add the layer
function addAnalyseLayer(checkbox, checked){
if(checked){
Ext.Ajax.request({
url: './PHP/WMS_Validator.php',
params: {
product: "analyse",
timechop: timeChopArray[currentStateIndex],
date: currentStateDate.getUTCFullYear() + ('0' + (currentStateDate.getUTCMonth() + 1)).slice(-2) + ('0' + currentStateDate.getUTCDate()).slice(-2),
type: currentStatePeriod
},
method: 'GET',
success: function(result, request) {
if (result.responseText != "invalid") {
map.addLayer(new OpenLayers.Layer.WMS(openlayers_wms_layer_analyses, CMCDataServer, {
layers: analysesWMSLayer[currentStatePeriod],
styles: analysesWMSStyle[currentStatePeriod],
format: "image/png",
transparent: true,
time: currentStateDate.getUTCFullYear() + "-" + ('0' + (currentStateDate.getUTCMonth() + 1)).slice(-2) + "-" + ('0' + currentStateDate.getUTCDate()).slice(-2) + "T" + timeChopArray[currentStateIndex] + ":00:00Z"
},
{
opacity: opacityLevelAnalyses,
visibility: true
}));
Ext.getCmp('analyses_validity_display_extjs').setValue(extjs_gui_state_panel_valid_analyses);
Ext.getCmp('extjs_gui_legend_tab_panels').setActiveTab(0);
} else {
//this is also a user request to insure users don't wait for observation data that doesn't exist
Ext.getCmp('analyses_validity_display_extjs').setValue(extjs_gui_state_panel_invalid_analyses);
Ext.Msg.alert(extjs_gui_analyses_missing_warning_title, extjs_gui_analyses_missing_warning);
Ext.getCmp('analyses_checkbox_extjs').setValue(false);
}
}
});
}else if(map.getLayersByName(openlayers_wms_layer_analyses).length!=0){
adjustStatePanelAnalysesValidity();
map.removeLayer(map.getLayersByName(openlayers_wms_layer_analyses)[0]);
}
adjustStatePanelProducts(checkbox, checked);
//MY TEST
map.raiseLayer(map.getLayersByName(openlayers_gml_layer_canada_bv)[0], map.getNumLayers()-1);
}
You can see //MY TEST near the end of the code. This is what I tried, but it's not re-ordering the layers at all. Still, if I type it in the console, it re-orders the layers perfectly like I want it to (well it re-orders just one layer, but if that works I'll mod it to have what I want).
So, would you have an idea? I can't seem to find the solution by myself.
Thanks anyway guys for your help.
UPDATE:
I tried to change the order from the toggle function of the other layer, this is the code after changes
function toggleCanadaBV(){
if(map.getLayersByName(openlayers_gml_layer_canada_bv)[0].getVisibility()){
map.getLayersByName(openlayers_gml_layer_canada_bv)[0].setVisibility(false);
}else{
map.getLayersByName(openlayers_gml_layer_canada_bv)[0].setVisibility(true);
map.setLayerIndex(map.getLayersByName(openlayers_gml_layer_canada_bv)[0], 700);
map.raiseLayer(map.getLayersByName(openlayers_gml_layer_canada_bv)[0], map.getNumLayers()-1);
}
}
But it's still not doing what I want at all... I don't understand.
I also tried to check my layer (that I add in the function) at the end of the function, and it's undefined even if I add it in the function...
Finally, I tried to place a button that trigger my function, and it works. So my function is correct WHEN launched from outside the checkbox or the toggles...
Finally, I have no idea why I could not re-order the "other" layer, but I found a solution at least.
I added map.raiseLayer(map.getLayersByName(openlayers_wms_layer_analyses)[0], -map.getNumLayers()); just after I add the layer, to create the layer at the start of the index order. That way, everything else is on top. If you have a similar problem, I hope this will help guys.