85 lines
3 KiB
JavaScript
85 lines
3 KiB
JavaScript
module.exports = function(RED) {
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var ui = require('../ui')(RED);
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function ButtonNode(config) {
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RED.nodes.createNode(this, config);
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var node = this;
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var group = RED.nodes.getNode(config.group);
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if (!group) { return; }
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var tab = RED.nodes.getNode(group.config.tab);
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if (!tab) { return; }
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var payloadType = config.payloadType;
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var payload = config.payload;
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if (payloadType === 'flow' || payloadType === 'global') {
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try {
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var parts = RED.util.normalisePropertyExpression(payload);
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if (parts.length === 0) {
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throw new Error();
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}
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}
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catch(err) {
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node.warn("Invalid payload property expression - defaulting to node id")
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payload = node.id;
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payloadType = 'str';
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}
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}
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else {
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payload = payload || node.id;
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}
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node.on("input", function(msg) {
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node.topi = RED.util.evaluateNodeProperty(config.topic,config.topicType || "str",node,msg);
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});
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var done = ui.add({
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node: node,
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tab: tab,
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group: group,
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emitOnlyNewValues: false,
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forwardInputMessages: config.passthru || false,
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storeFrontEndInputAsState: false,
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control: {
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type: 'button',
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label: config.label,
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tooltip: config.tooltip,
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color: config.color,
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bgcolor: config.bgcolor,
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className: config.className,
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icon: config.icon,
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order: config.order,
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value: payload,
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format: config.bgcolor,
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width: config.width || group.config.width || 3,
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height: config.height || 1
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},
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beforeSend: function (msg,m2) {
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var t = RED.util.evaluateNodeProperty(config.topic,config.topicType || "str",node,msg)
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if (typeof t === "undefined") { t = node.topi; }
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if (t !== undefined) { msg.topic = t; }
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if (((config.topicType || "str") === "str") && t == "") { delete msg.topic; }
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if (m2 !== undefined) { msg.event = m2.event; }
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},
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convertBack: function (value) {
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if (payloadType === "date") {
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value = Date.now();
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}
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else {
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try {
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value = RED.util.evaluateNodeProperty(payload,payloadType,node);
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}
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catch(e) {
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if (payloadType === "bin") { node.error("Badly formatted buffer"); }
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else { node.error(e,payload); }
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}
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}
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return value;
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}
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});
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node.on("close", done);
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}
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RED.nodes.registerType("ui_button", ButtonNode);
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};
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