module.exports = function(RED) {
|
var ui = require('../ui')(RED);
|
|
function DropdownNode(config) {
|
RED.nodes.createNode(this, config);
|
this.pt = config.passthru;
|
this.multiple = config.multiple || false;
|
this.state = [" "," "];
|
var node = this;
|
node.status({});
|
|
var group = RED.nodes.getNode(config.group);
|
if (!group) { return; }
|
var tab = RED.nodes.getNode(group.config.tab);
|
if (!tab) { return; }
|
|
var control = {
|
type: 'dropdown',
|
multiple: config.multiple,
|
label: config.label,
|
tooltip: config.tooltip,
|
place: config.place,
|
order: config.order,
|
value: config.payload || node.id,
|
width: config.width || group.config.width || 6,
|
height: config.height || 1,
|
className: config.className || '',
|
};
|
|
for (var o=0; o<config.options.length; o++) {
|
config.options[o].label = config.options[o].label || config.options[o].value;
|
}
|
control.options = config.options;
|
|
var emitOptions = { value:undefined };
|
|
node.on("input", function(msg) {
|
node.topi = msg.topic;
|
});
|
|
var done = ui.add({
|
node: node,
|
tab: tab,
|
group: group,
|
forwardInputMessages: config.passthru,
|
control: control,
|
|
convert: function (payload, oldValue, msg) {
|
// convert msg
|
// as of now, only allow a full replacement of options
|
// beforeEmit is only called when a node linked to us sends a msg
|
// we are expecting to receive an "update options" msg
|
// which we expect to be an array of new options
|
|
// for convenience, we pass an indication to the node connected to this dropdown
|
// that this is an "update options" message coming from the input sender
|
// 'beforeEmit' is called before 'beforeSend', so we may pass in that info
|
// otherwise that convenience info would not be sent (would not cause any problems)...
|
|
emitOptions = {isOptionsValid:false, value:undefined, newOptions:undefined};
|
do {
|
if (!msg.options) { break; }
|
if (typeof msg.options === "string" ) { msg.options = [ msg.options ]; }
|
if (!Array.isArray(msg.options)) { break; }
|
emitOptions.newOptions = [];
|
if (msg.options.length === 0) {
|
emitOptions.isOptionsValid = true;
|
break;
|
}
|
// could check whether or not all members have same type
|
for (var i = 0; i < msg.options.length; i++) {
|
var opt = msg.options[i];
|
if (opt === undefined || opt === null) { continue; }
|
switch (typeof opt) {
|
case 'number': {
|
opt = "" + opt;
|
emitOptions.newOptions.push({label:opt, value:opt, type:"number"});
|
break;
|
}
|
case 'string': {
|
emitOptions.newOptions.push({label:opt, value:opt, type:"string"});
|
break;
|
}
|
case 'object': {
|
// assuming object of {label:value}
|
for (var m in opt) {
|
if (opt.hasOwnProperty(m)) {
|
emitOptions.newOptions.push({label:m, value:opt[m], type:typeof(opt[m])});
|
}
|
}
|
break;
|
}
|
default:
|
// do nothing, just continue with next option
|
}
|
}
|
// send null object on change of menu list
|
if (emitOptions.newOptions.length > 0) { emitOptions.value = null; }
|
// or send the preselected value
|
if (msg.payload) { emitOptions.value = msg.payload; }
|
emitOptions.isOptionsValid = true;
|
} while (false);
|
// finally adjust msg to reflect the input
|
msg._dontSend = true;
|
if (emitOptions.isOptionsValid) {
|
control.options = emitOptions.newOptions;
|
control.value = emitOptions.value;
|
}
|
else {
|
if (msg.options) {
|
node.error("ERR: Invalid Options", msg);
|
}
|
}
|
|
if (msg.hasOwnProperty("payload")) {
|
if (node.multiple) {
|
if (typeof msg.payload === "string") {
|
msg.payload = msg.payload.split(',');
|
}
|
}
|
emitOptions.value = msg.payload;
|
control.value = emitOptions.value;
|
delete msg._dontSend;
|
return emitOptions;
|
}
|
// we do not overide payload here due to 'opt.emitOnlyNewValues' in ui.js
|
// when undefined is returned, msg will not be forwarded
|
return emitOptions.isOptionsValid ? emitOptions : undefined; // always pass entire object (newValue == oldValue)
|
},
|
|
beforeEmit: function (msg, newValue) {
|
if (msg.socketid) { emitOptions.socketid = msg.socketid; }
|
return emitOptions;
|
},
|
|
convertBack: function (msg) {
|
var val = node.multiple ? [] : "";
|
var m = RED.util.cloneMessage(msg);
|
var mm = (m.hasOwnProperty("id") && m.hasOwnProperty("value")) ? m.value : m;
|
for (var i=0; i<control.options.length; i++) {
|
if (!node.multiple) {
|
delete m["$$mdSelectId"];
|
if (JSON.stringify(control.options[i].value) == JSON.stringify(mm)) {
|
val = control.options[i].value;
|
if (typeof val === "string" && control.options[i].type.indexOf("str") !== 0) {
|
try { val = JSON.parse(val); }
|
catch(e) {}
|
}
|
break;
|
}
|
}
|
else if (node.multiple && mm !== null) {
|
if (!Array.isArray(mm)) {
|
if (mm.hasOwnProperty("value")) { mm = mm.value; }
|
// if (typeof m === "string") { m = [ m ]; }
|
if (mm == null) { mm = []; }
|
else { mm = [ mm ]; }
|
}
|
mm.map(x => delete x["$$mdSelectId"])
|
for (var j = 0; j < mm.length; j++) {
|
if (JSON.stringify(control.options[i].value) === JSON.stringify(mm[j])) {
|
var v = control.options[i].value;
|
if (typeof v === "string" && control.options[i].type !== "string") {
|
try { v = JSON.parse(v); }
|
catch(e) {}
|
}
|
val.push(v);
|
break;
|
}
|
}
|
}
|
}
|
return val;
|
},
|
|
beforeSend: function (msg) {
|
if (msg.payload === undefined) { msg.payload = []; }
|
if (msg.payload === "") { msg._dontSend = true; }
|
if (msg._dontSend) {
|
delete msg.options;
|
msg.payload = emitOptions.value;
|
}
|
var t = RED.util.evaluateNodeProperty(config.topic,config.topicType || "str",node,msg) || node.topi;
|
if (t !== undefined) { msg.topic = t; }
|
if (msg.payload === null || msg._dontSend) { node.status({}); }
|
else {
|
var stat = "";
|
if (Array.isArray(msg.payload)) { stat = msg.payload.length + " items"; }
|
else {
|
if (typeof msg.payload === "object") { stat = JSON.stringify(msg.payload); }
|
else { stat = msg.payload.toString(); }
|
if (stat.length > 32) { stat = stat.substr(0,31)+"..."; }
|
}
|
if (node.pt) {
|
node.status({shape:"dot",fill:"grey",text:stat});
|
}
|
else {
|
node.state[1] = stat;
|
node.status({shape:"dot",fill:"grey",text:node.state[1] + " | " + node.state[1]});
|
}
|
}
|
}
|
});
|
|
if (!node.pt) {
|
node.on("input", function(msg) {
|
node.state[0] = msg.payload;
|
node.status({shape:"dot",fill:"grey",text:node.state[0] + " | " + node.state[1]});
|
});
|
}
|
|
node.on("close", done);
|
}
|
RED.nodes.registerType("ui_dropdown", DropdownNode);
|
};
|
