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add support for displaying history

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This commit is contained in:
Christopher Schmidt 2008-04-22 13:52:41 +00:00
parent 25fa17d612
commit 670d15e4c9
2 changed files with 75 additions and 29 deletions
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17
app/views/browse/_start.rhtml
View file

@ -1,18 +1,11 @@
<div style="padding:10px;">
<div class="export_bounds">
<span class="bounds_span" id="maxlat"></span>
<br/>
<span class="bounds_span" style="padding:10px" id="minlon"></span>
<span class="bounds_span" style="padding:10px" id="maxlon"></span>
<br/>
<span class="bounds_span" id="minlat"></span>
<p class="export_hint">
<a id="use_map" href="#">View Data For Current Map View</a>
<div style="padding:0px 10px;">
<div style="text-align: center">
<p>
<a id="use_map" display="hidden" href="#">View Data For Current Map View</a>
<br />
<a id='drag_box' href="#">Manually select a different area</a>
</p>
</div>
</div>
<div id="status"></div>
<div id="object">
</div>

87
app/views/browse/start.rjs
View file

@ -1,8 +1,8 @@
page.replace_html :sidebar_title, 'Browse'
page.replace_html :sidebar_title, 'Data'
page.replace_html :sidebar_content, :partial => 'start'
page << <<EOJ
var gml, sf, objList, currentFeature, featureList;
var gml, sf, objList, currentFeature, featureList, mode = "auto", currentBounds;
OpenLayers.Feature.Vector.style['default'].strokeWidth = 3;
OpenLayers.Feature.Vector.style['default'].cursor = "pointer";
@ -20,9 +20,13 @@ page << <<EOJ
}
});
map.addControl(box);
map.events.register("moveend", map, validateLinks);
map.events.register("moveend", map, showData);
map.events.triggerEvent("moveend");
if (map.getZoom() >= 16) {
}
function showData() {
if (mode == "manual") { return; }
if (map.getZoom() >= 15) {
useMap();
} else {
$("status").innerHTML = "Zoom in or Select an area of the map to view.";
@ -42,7 +46,7 @@ page << <<EOJ
currentFeature.destroy();
currentFeature = null;
}
map.events.unregister("moveend", map, validateLinks);
map.events.unregister("moveend", map, showData);
}
function startDrag() {
@ -54,7 +58,23 @@ page << <<EOJ
function useMap() {
var bounds = map.getExtent();
getData(bounds);
var projected = bounds.clone().transform(map.getProjectionObject(), epsg4326);
if (!currentBounds || !currentBounds.containsBounds(projected)) {
var center = bounds.getCenterLonLat();
var tileWidth = bounds.getWidth() * 1.2;
var tileHeight = bounds.getHeight() * 1.2;
var tileBounds =
new OpenLayers.Bounds(center.lon - (tileWidth / 2),
center.lat - (tileHeight / 2),
center.lon + (tileWidth / 2),
center.lat + (tileHeight / 2));
currentBounds = tileBounds;
getData(tileBounds);
mode = "auto";
$("drag_box").style.display="inline";
$("use_map").style.display="none";
}
return false;
}
$("use_map").onclick = useMap;
@ -64,6 +84,9 @@ page << <<EOJ
box.deactivate();
getData(bounds);
$("drag_box").innerHTML = "Manually select a different area";
mode = "manual";
$("use_map").style.display="inline";
$("drag_box").style.display="none";
}
function displayFeatureWarning() {
@ -129,6 +152,7 @@ page << <<EOJ
}
function loadGML(url) {
$("status").innerHTML = "Loading...";
$("object").innerHTML = "";
if (!gml) {
var style = new OpenLayers.Style();
style.addRules([new OpenLayers.Rule(
@ -197,7 +221,9 @@ page << <<EOJ
layer.drawFeature(f, layer.styleMap.createSymbolizer(f, "default"));
}
onFeatureSelect(this.feature);
map.setCenter(this.feature.geometry.getBounds().getCenterLonLat());
if (mode != "auto") {
map.setCenter(this.feature.geometry.getBounds().getCenterLonLat());
}
return false;
}
@ -256,21 +282,48 @@ page << <<EOJ
li.appendChild(document.createTextNode(": " + feature.attributes[key]));
ul.appendChild(li);
}
var li = document.createElement("li");
var link = document.createElement("a");
link.href = "/browse/"+type+"/"+feature.osm_id+"/history";
link.appendChild(document.createTextNode("History"));
li.appendChild(link);
ul.appendChild(li);
link.onclick = OpenLayers.Function.bind(loadHistory, {type: type, feature: feature, link: link});
$("object").appendChild(ul);
// Stash the currently drawn feature
currentFeature = feature;
}
function validateLinks() {
var bounds = this.getExtent();
bounds = bounds.clone().transform(map.getProjectionObject(), epsg4326);
if (bounds.getWidth() * bounds.getHeight() > 0.25) {
$("use_map").style.display = "none";
} else {
$("use_map").style.display = "inline";
}
function loadHistory() {
this.link.href = "";
this.link.innerHTML = "Wait...";
new Ajax.Request("/api/0.5/"+this.type+"/"+this.feature.osm_id+"/history", {onComplete: OpenLayers.Function.bind(displayHistory, this)});
return false;
}
function displayHistory(request) {
if (currentFeature.osm_id != this.feature.osm_id || $("object").firstChild == objList) {
return false;
}
this.link.parentNode.parentNode.removeChild(this.link.parentNode);
var doc = request.responseXML;
var div = document.createElement("div");
var h3 = document.createElement("h3");
h3.appendChild(document.createTextNode("History"));
div.appendChild(h3);
var nodes = doc.getElementsByTagName(this.type);
var history = document.createElement("ul");
for (var i = 0; i < nodes.length; i++) {
var user = nodes[i].getAttribute("user") || "private user";
var timestamp = nodes[i].getAttribute("timestamp");
var item = document.createElement("li");
item.appendChild(document.createTextNode("Edited by " + user + " at " + timestamp));
history.appendChild(item);
}
div.appendChild(history);
$("object").appendChild(div);
}
start();
EOJ