From 1f12c2b0b1e4e0b01cc9a00cbd9377855a3d83c0 Mon Sep 17 00:00:00 2001
From: Mike Taylor <mike@indexdata.com>
Date: Wed, 30 Apr 2014 09:01:34 +0100
Subject: [PATCH] New file, mkws-widget.js: contains wiget factory function
 and autosearch code from the old mkws-widgets.js.

---
 src/mkws-widget.js |  118 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/mkws-widget.js

diff --git a/src/mkws-widget.js b/src/mkws-widget.js
new file mode 100644
index 0000000..a16dec1
--- /dev/null
+++ b/src/mkws-widget.js
@@ -0,0 +1,118 @@
+// Factory function for widget objects.
+function widget($, team, type, node) {
+    // Static register of attributes that do not contribute to config
+    var ignoreAttrs = {
+	id:1, 'class':1, style:1, name:1, action:1, type:1, size:1,
+	value:1, width:1, valign:1
+    };
+
+    var that = {
+	team: team,
+	type: type,
+	node: node,
+	config: mkws.objectInheritingFrom(team.config())
+    };
+
+    function log(s) {
+	team.log(s);
+    }
+    that.log = log;
+
+    that.toString = function() {
+	return '[Widget ' + team.name() + ':' + type + ']';
+    };
+
+    that.value = function() {
+        return node.value;
+    }
+
+    for (var i = 0; i < node.attributes.length; i++) {
+	var a = node.attributes[i];
+	if (a.name === 'data-mkws-config') {
+	    // Treat as a JSON fragment configuring just this widget
+	    log(node + ": parsing config fragment '" + a.value + "'");
+	    var data;
+	    try {
+		data = $.parseJSON(a.value);
+		for (var key in data) {
+		    log(node + ": adding config element " + key + "='" + data[key] + "'");
+		    that.config[key] = data[key];
+		}
+	    } catch (err) {
+		alert("Can't parse " + node + " data-mkws-config as JSON: " + a.value);
+	    }
+	} else if (a.name.match (/^data-mkws-/)) {
+	    var name = a.name.replace(/^data-mkws-/, '')
+	    that.config[name] = a.value;
+	    log(node + ": set data-mkws attribute " + name + "='" + a.value + "'");
+	} else if (!ignoreAttrs[a.name]) {
+	    that.config[a.name] = a.value;
+	    log(node + ": set regular attribute " + a.name + "='" + a.value + "'");
+	}
+    }
+
+    var fn = mkws.promotionFunction(type);
+    if (fn) {
+	fn.call(that);
+	log("made " + type + " widget(node=" + node + ")");
+    } else {
+	log("made UNPROMOTED widget(type=" + type + ", node=" + node + ")");
+    }
+
+    return that;
+}
+
+
+// Utility function for use by all widgets that can invoke autosearch.
+widget.autosearch = function(widget) {
+    widget.team.queue("ready").subscribe(function() {
+	var query = widget.config.autosearch;
+	if (query) {
+	    if (query.match(/^!param!/)) {
+		var param = query.replace(/^!param!/, '');
+		query = mkws.getParameterByName(param);
+		widget.log("obtained query '" + query + "' from param '" + param + "'");
+		if (!query) {
+		    alert("This page has a MasterKey widget that needs a query specified by the '" + param + "' parameter");
+		}
+	    } else if (query.match(/^!path!/)) {
+		var index = query.replace(/^!path!/, '');
+		var path = window.location.pathname.split('/');
+		query = path[path.length - index];
+		widget.log("obtained query '" + query + "' from path-component '" + index + "'");
+		if (!query) {
+		    alert("This page has a MasterKey widget that needs a query specified by the path-component " + index);
+		}
+            } else if (query.match(/^!var!/)) {
+		var name = query.replace(/^!var!/, '');
+		query = window[name]; // It's ridiculous that this works
+		widget.log("obtained query '" + query + "' from variable '" + name + "'");
+		if (!query) {
+		    alert("This page has a MasterKey widget that needs a query specified by the '" + name + "' variable");
+		}
+	    }
+
+	    var sortOrder = widget.config.sort;
+	    var maxrecs = widget.config.maxrecs;
+	    var perpage = widget.config.perpage;
+	    var limit = widget.config.limit;
+	    var targets = widget.config.targets;
+	    var targetfilter = widget.config.targetfilter;
+	    var target = widget.config.target;
+	    if (target) targetfilter = 'udb=="' + target + '"';
+
+	    var s = "running auto search: '" + query + "'";
+	    if (sortOrder) s += " sorted by '" + sortOrder + "'";
+	    if (maxrecs) s += " restricted to " + maxrecs + " records";
+	    if (perpage) s += " with " + perpage + " per page";
+	    if (limit) s += " limited by '" + limit + "'";
+	    if (targets) s += " in targets '" + targets + "'";
+	    if (targetfilter) s += " constrained by targetfilter '" + targetfilter + "'";
+	    widget.log(s);
+
+	    widget.team.newSearch(query, sortOrder, maxrecs, perpage, limit, targets, targetfilter);
+	}
+    });
+};
+
+
-- 
1.7.10.4