1 files changed, 586 insertions, 0 deletions
diff --git a/html/rrdui.js b/html/rrdui.js
new file mode 100644
index 0000000..12bce92
--- /dev/null
+++ b/html/rrdui.js
@@ -0,0 +1,586 @@
+
+
+/* -----------------------------------------------------------------------------
+ * STARTUP
+ */
+
+/* TODO: Check setup variables */
+/* TODO: Loading indicator */
+
+var categoryCurrent = null;
+var categoryArea = document.getElementById("headers");
+var xmlData = null;
+var graphDoc = null;
+
+loadXml(endpoint, loadedGraphData);
+setupFrame();
+
+function loadedGraphData(doc)
+{
+    if(!doc)
+    {
+        displayError("Couldn't load graph data from server", categoryArea);
+        return;
+    }
+
+    xmlData = doc;
+
+    displayCategories();
+    displayCurrentPage();
+}
+
+
+/* -----------------------------------------------------------------------------
+ * GRAPHS
+ */
+
+function setupFrame()
+{
+    var frame = document.getElementById("main-frame");
+    graphDoc = frame.contentDocument;
+
+    /* Get the stylesheet info for frame */
+    var i, links = document.getElementsByTagName("link");
+    var csslink = null;
+    for(i = 0; i < links.length; i++)
+    {
+        if(links.item(i).getAttribute("rel") == "stylesheet")
+            csslink = links.item(i);
+    }
+
+    graphDoc.open();
+    graphDoc.write("<html><head>\n");
+    /* TODO: We probably need to write a <base> tag for relative URIs */
+    if(csslink)
+        graphDoc.write("<link href=\"" + csslink.getAttribute("href") +
+                       "\" type=\"text/css\" rel=\"stylesheet\"/>\n");
+    graphDoc.write("</head><body class=\"in-frame\">\n");
+
+    /* The graph area */
+    graphDoc.write("<div id=\"graphs\" align=\"center\"></div>\n");
+
+    /* Zoom overlay */
+    graphDoc.write("<div id=\"zoom\"></div>\n");
+
+    /* The action buttons */
+    graphDoc.write("<div id=\"actions\">\n");
+    graphDoc.write("<img id=\"action-prev\" class=\"action\" src=\"action-prev.gif\"/><br/>");
+    graphDoc.write("<img id=\"action-next\" class=\"action\" src=\"action-next.gif\"/><br/>");
+    graphDoc.write("<img id=\"action-zoom\" class=\"action\" src=\"action-zoom.gif\"/><br/>");
+    graphDoc.write("<img id=\"action-goto\" class=\"action\" src=\"action-date.gif\"/><br/>");
+    graphDoc.write("</div>");
+
+    /* Date selection drop down */
+    graphDoc.write("<div id=\"goto\">\n");
+    graphDoc.write("<select id=\"goto-select\" size=\"6\">");
+    graphDoc.write("<option value=\"1800:0\">Last 30 Minutes</option>");
+    graphDoc.write("<option value=\"3600:0\">Last Hour</option>");
+    graphDoc.write("<option value=\"10800:0\">Last 3 Hours</option>");
+    graphDoc.write("<option value=\"21600:0\">Last 6 Hours</option>");
+    graphDoc.write("<option value=\"86400:0\">Last Day</option>");
+    graphDoc.write("<option value=\"259200:0\">Last 3 Days</option>");
+    graphDoc.write("<option value=\"604800:0\">Last Week</option>");
+    graphDoc.write("<option value=\"1209600:0\">Last 2 Weeks</option>");
+    graphDoc.write("<option value=\"1209600:0\">Last 2 Weeks</option>");
+    graphDoc.write("<option value=\"2678400:0\">Last Month</option>");
+    graphDoc.write("<option value=\"5356800:2678400\">Month Before Last</option>");
+    graphDoc.write("<option value=\"7948800:0\">Last 3 Months</option>");
+    graphDoc.write("<option value=\"15897600:0\">Last 6 Months</option>");
+    graphDoc.write("<option value=\"31536000:0\">Last Year</option>");
+    graphDoc.write("</select>");
+
+    /* And wrap it up */
+    graphDoc.write("</body></html>");
+    graphDoc.close();
+}
+
+function displayCurrentPage()
+{
+    var area = graphDoc.getElementById("graphs");
+
+    /* Hide all images not from this category */
+    var i, images = area.getElementsByTagName("img");
+    for(i = 0; i < images.length; i++)
+    {
+        if(images.item(i)._category == categoryCurrent)
+            images.item(i).style.display = "inline";
+        else
+            images.item(i).style.display = "none";
+    }
+
+    var data = findCategoryData(categoryCurrent);
+    if(!xmlData || !data)
+    {
+        displayError("Graph data isn't loaded from server", area);
+        return;
+    }
+
+    var tend = nowTime();
+    var tbeg = tend - 86400; /* One day by default */
+
+    var children = data.childNodes;
+    for(i = 0; i < children.length; i++)
+    {
+        var child = children.item(i);
+        if(child.nodeType != Node.ELEMENT_NODE ||
+           child.localName != "graph")
+            continue;
+
+        var name = child.getAttribute("name");
+        if(!name || !name.length)
+            continue;
+
+        /* Make sure we don't already have this graph */
+        var id = "graph-" + categoryCurrent + "-" + name;
+        var img = graphDoc.getElementById(id);
+        if(img != null)
+            continue;
+
+        img = document.createElement("img");
+
+        if(child.hasAttribute("title"))
+        {
+            img.setAttribute("title", child.getAttribute("title"));
+            img.setAttribute("alt", child.getAttribute("title"));
+        }
+        else
+            img.setAttribute("alt", "Graph");
+
+        img.setAttribute("class", "graph");
+        img.setAttribute("id", id);
+
+        area.appendChild(img);
+
+        img._category = categoryCurrent;
+        img._name = name;
+        img._tbeg = tbeg;
+        img._tend = tend;
+
+        reloadGraph(img);
+
+        img.onmousedown = function(evt)
+            { return zoomGraphStart(window.event ? window.event : evt); }
+        img.onmouseover = function(evt)
+            { return actionsDisplay(window.event ? window.event : evt); }
+    }
+}
+
+function reloadGraph(img)
+{
+    /* TODO: Move these into settings */
+    /* TODO: We should encode colons properly */
+    var GRAPH_COLOR_BACK = ":252424";
+    var GRAPH_COLOR_FONT = ":E7E1CC";
+    var GRAPH_WIDTH = 450;
+    var GRAPH_HEIGHT = 120
+
+    var uri = endpoint + "/graph?category=" + img._category + "&name=" + img._name;
+
+    /* Add date options */
+    uri += "&start=" + img._tbeg + "&end=" + img._tend;
+
+    /* And colors */
+    uri += "&color=BACK" + GRAPH_COLOR_BACK + "&color=FONT" + GRAPH_COLOR_FONT +
+           "&color=SHADEA" + GRAPH_COLOR_BACK + "&color=SHADEB" + GRAPH_COLOR_BACK;
+
+    /* Size */
+    uri += "&height=" + GRAPH_HEIGHT + "&width=" + GRAPH_WIDTH;
+
+    img.setAttribute("src", uri);
+}
+
+function zoomGraphStart(evt)
+{
+    if(evt.button != 0)
+        return;
+
+    if(evt.target.getAttribute("class") != "graph")
+        return;
+
+    var img = evt.target;
+    var zoom = graphDoc.getElementById("zoom");
+
+    zoom._img = img;
+    zoom._zooming = true;
+    zoom._from = evt.clientX + graphDoc.body.scrollLeft;
+
+    zoom._start = zoom._from - img.offsetLeft;
+    zoom._end = zoom._start;
+
+    zoom.style.width = 1;
+    zoom.style.left = zoom._from;
+    zoom.style.height = img.height;
+    zoom.style.top = img.offsetTop;
+    zoom.style.display = "block";
+
+    zoom.onmousemove = zoom._img.onmousemove = function(evt)
+        { return zoomGraphUpdate(window.event ? window.event : evt); }
+    zoom.onmouseup = zoom._img.onmouseup = function(evt)
+        { return zoomGraphDone(window.event ? window.event : evt); }
+    document.onmouseup = graphDoc.onmouseup = function(evt)
+        { return zoomGraphDone(window.event ? window.event : evt); }
+
+    evt.preventDefault();
+    evt.stopPropagation();
+    return false;
+}
+
+function zoomGraphUpdate(evt)
+{
+    var zoom = graphDoc.getElementById("zoom");
+    if(!zoom._zooming || !zoom._img)
+        return;
+
+    var to = evt.clientX + graphDoc.body.scrollLeft;
+    var width = to - zoom._from;
+    zoom._end = to - zoom._img.offsetLeft;
+
+    if(width == 0)
+        width = 1;
+
+    if(width < 0)
+    {
+        zoom.style.left = to;
+        zoom.style.width = -width;
+    }
+    else
+    {
+        zoom.style.left = zoom._from;
+        zoom.style.width = width;
+    }
+
+    zoom.style.height = zoom._img.height;
+    zoom.style.top = zoom._img.offsetTop;
+    zoom.style.display = "block";
+
+    evt.preventDefault();
+    evt.stopPropagation();
+    return false;
+}
+
+function zoomGraphDone(evt)
+{
+    var zoom = graphDoc.getElementById("zoom");
+    if(!zoom._zooming)
+        return;
+
+    if(evt.target == zoom || evt.target == zoom._img)
+        zoomGraphSelect(zoom);
+
+    zoomGraphCancel(evt);
+}
+
+function zoomGraphSelect(zoom)
+{
+    // Arbitrary values (TODO: Move these to CONFIG)
+    var GRAPH_MARGIN_LEFT = 67;
+    var GRAPH_MARGIN_RIGHT = 27;
+
+    var left = GRAPH_MARGIN_LEFT;
+    var right = zoom._img.width - GRAPH_MARGIN_RIGHT;
+
+    var start = zoom._start > zoom._end ? zoom._end : zoom._start;
+    var end = zoom._start > zoom._end ? zoom._start : zoom._end;
+
+    /* If too small selected, then punt */
+    if((end - start) <= 1)
+        return;
+
+    /* If entire thing selected, then punt */
+    if(start < left && end > right)
+        return;
+
+    /* If only margins selected, then punt */
+    if(!(start < right && end > left))
+        return;
+
+    /* Limit it to the right range */
+    var range = zoom._img.width - GRAPH_MARGIN_RIGHT - GRAPH_MARGIN_LEFT;
+    start = start < left ? 0 : start - left;
+    end = end > range ? range : end - left;
+
+    /* Compute the ratio pixels:time */
+    var ratio = (zoom._img._tend - zoom._img._tbeg) / range;
+
+    var obeg = zoom._img._tbeg;
+    var oend = zoom._img._tend;
+
+    zoom._img._tend = Math.floor((end * ratio) + zoom._img._tbeg);
+    zoom._img._tbeg = Math.floor((start * ratio) + zoom._img._tbeg);
+
+    reloadGraph(zoom._img);
+}
+
+function zoomGraphCancel(evt)
+{
+    var zoom = graphDoc.getElementById("zoom");
+
+    if(zoom._zooming) {
+        if(zoom._img)
+            zoom._img.onmousemove = zoom._img.onmouseup = zoom._img.onmouseleave = null;
+        zoom._img = null;
+        zoom.onmousemove = zoom.onmouseup = null;
+        zoom._zooming = false;
+    }
+
+    zoom.style.display = "none";
+}
+
+function zoomGraphOut(img)
+{
+    var factor = Math.floor((img._tend - img._tbeg) / 2.5);
+    var now = nowTime();
+
+    /* If near the end we have special behavior */
+    if(img._tend >= now - 300 || img._tend <= now)
+    {
+        img._tbeg -= factor;
+        img._tend = now;
+    }
+    else
+    {
+        factor = Math.floor(factor / 2);
+        img._tbeg -= factor
+        img._tend += factor;
+    }
+
+    reloadGraph(img);
+}
+
+function zoomGraphMove(img, dir)
+{
+    var factor = Math.floor((img._tend - img._tbeg) / 3);
+    if(!dir)
+        factor = -factor;
+    img._tbeg += factor;
+    img._tend += factor;
+    reloadGraph(img);
+}
+
+function actionsDisplay(evt)
+{
+    if(evt.target.getAttribute("class") != "graph")
+        return;
+
+    var img = evt.target;
+
+    var actions = graphDoc.getElementById("actions");
+    actions._img = img;
+    actions._display = true;
+
+    actions.style.top = img.offsetTop;
+    actions.style.left = img.offsetLeft + (img.width - 16);
+    actions.style.display = "block";
+
+    actions.onmouseout = img.onmouseout = function(evt)
+            { return actionsHide(window.event ? window.event : evt); }
+
+    /* TODO: We only actually have to do this once */
+    var i, acts = actions.getElementsByTagName("img");
+    for(i = 0; i < acts.length; i++)
+    {
+        acts.item(i).onclick = function(evt)
+            { return actionRun(window.event ? window.event : evt); }
+    }
+}
+
+function actionsHide(evt)
+{
+    var actions = graphDoc.getElementById("actions");
+    if(!actions._display)
+        return;
+
+    var x = evt.clientX - graphDoc.body.scrollLeft;
+    var y = evt.clientY - graphDoc.body.scrollTop;
+    var img = actions._img;
+
+    /* See if we're actually still within the image */
+    if(x >= img.offsetLeft && x <= img.offsetLeft + img.width &&
+       y >= img.offsetTop && y <= img.offsetTop + img.height)
+        return;
+
+    actions.style.display = "none";
+    img.onmouseout = actions.onmouseout = null;
+    actions._img = null;
+    actions._display = false;
+}
+
+function actionRun(evt)
+{
+    if(evt.target.getAttribute("class") != "action")
+        return;
+
+    var actions = graphDoc.getElementById("actions");
+    if(!actions._display)
+        return;
+
+    var act = evt.target;
+
+    switch(act.getAttribute("id"))
+    {
+    case "action-zoom":
+        zoomGraphOut(actions._img);
+        break;
+    case "action-next":
+        zoomGraphMove(actions._img, true);
+        break;
+    case "action-prev":
+        zoomGraphMove(actions._img, false);
+        break;
+    case "action-goto":
+        actionGoto(actions._img, act);
+        break;
+    }
+}
+
+function actionGoto(img, act)
+{
+    /* Display the selection thingy */
+    var got = graphDoc.getElementById("goto");
+
+    /* TODO: Make 120/170 a constant */
+    got.style.top = act.offsetTop;
+    got.style.left = (img.offsetLeft + img.width) - 170;
+    got.style.width = 120;
+    got.style.display = "block";
+
+    img.onmouseclick = actionGotoCancel;
+
+    var sel = graphDoc.getElementById("goto-select");
+    sel.onchange = actionGotoChange;
+    sel._img = img;
+}
+
+function actionGotoCancel()
+{
+    var got = graphDoc.getElementById("goto");
+    got.style.display = "none";
+}
+
+function actionGotoChange()
+{
+    var sel = graphDoc.getElementById("goto-select");
+    var img = sel._img;
+    sel.onchange = null;
+    sel._img = null;
+
+    times = sel.value.split(":");
+    img._tbeg = nowTime() - times[0];
+    img._tend = nowTime() - times[1];
+    reloadGraph(img);
+
+    actionGotoCancel();
+}
+
+/* -----------------------------------------------------------------------------
+ * GROUP CATEGORIES
+ */
+
+function findCategoryData(cat)
+{
+    var i;
+
+    if(!xmlData)
+        return null;
+
+    var cats = xmlData.getElementsByTagName("category");
+    for(i = 0; i < cats.length; i++)
+    {
+        if(cats.item(i).getAttribute("name") == cat)
+            return cats.item(i);
+    }
+
+    return null;
+}
+
+function changeCategory(cat)
+{
+    categoryCurrent = cat;
+    displayCurrentPage();
+}
+
+function displayCategories()
+{
+    var i;
+
+    /* Get the template and clean it up a bit */
+    var template = document.getElementById("header-template");
+    while(template.hasChildNodes())
+        template.removeChild(template.firstChild);
+
+    var groups = xmlData.getElementsByTagName("category");
+
+    for(i = 0; i < groups.length; i++)
+    {
+        var name = groups.item(i).getAttribute("name");
+
+        if(!categoryCurrent)
+            categoryCurrent = name;
+
+        var el = template.cloneNode(true);
+        el.removeAttribute("id");
+        el.appendChild(document.createTextNode(name));
+        el.setAttribute("group", name);
+        el.setAttribute("onclick", "changeCategory('" + name + "');");
+
+        categoryArea.appendChild(el);
+    }
+}
+
+/* -----------------------------------------------------------------------------
+ * HELPERS
+ */
+
+function loadXml(uri, callback)
+{
+    var xmlhttp;
+    var xmlHttpChange = function() {
+        if(xmlhttp.readyState == 4)
+        {
+            if(xmlhttp.status == 200)
+                callback(xmlhttp.responseXML);
+            else
+                callback(null);
+        }
+    }
+
+    /* Mozilla code */
+    if(window.XMLHttpRequest)
+    {
+        xmlhttp = new XMLHttpRequest();
+        xmlhttp.onreadystatechange = xmlHttpChange;
+        xmlhttp.open("GET", uri, true);
+        xmlhttp.send(null);
+    }
+
+    /* And now for the Nasty */
+    else if (window.ActiveXObject)
+    {
+        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
+        /* TODO: need to do something when this fails (can it fail?) */
+        if(xmlhttp)
+        {
+            xmlhttp.onreadystatechange = xmlHttpChange;
+            xmlhttp.open("GET", uri, true);
+            xmlhttp.send()
+        }
+    }
+}
+
+function displayError(message, place)
+{
+    var el = document.createElement("span");
+    el.setAttribute("class", "error");
+    var text = document.createTextNode(message);
+    el.appendChild(text);
+
+    if(place)
+        place.appendChild(el);
+
+    return el;
+}
+
+function nowTime()
+{
+    return Math.floor((new Date()).getTime() / 1000);
+}