node-red/nodes/core/core/80-template.html

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  Copyright 2013, 2015 IBM Corp.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
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<script type="text/x-red" data-template-name="template">
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
        <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
    </div>
    <div class="form-row" style="margin-bottom: 0px;">
        <label for="node-input-template"><i class="fa fa-file-code-o"></i> <span data-i18n="template.label.template"></span></label>
        <input type="hidden" id="node-input-template" autofocus="autofocus">
        <select id="node-input-format" style=" font-size: 0.8em; margin-bottom: 3px; width:110px; float:right;">
            <option value="handlebars">mustache</option>
            <option value="html">HTML</option>
            <option value="json">JSON</option>
            <option value="markdown">Markdown</option>
            <option value="text">none</option>
        </select>
    </div>
    <div class="form-row node-text-editor-row">
        <div style="height: 250px;" class="node-text-editor" id="node-input-template-editor" ></div>
    </div>
    <div class="form-row">
        <label for="node-input-field"><i class="fa fa-edit"></i> <span data-i18n="template.label.property"></span></label>
        msg.<input type="text" id="node-input-field" placeholder="payload" style="width:170px;">
    </div>
</script>

<script type="text/x-red" data-help-name="template">
    <p>Creates a new message based on the provided template.</p>
    <p>This uses the <i><a href="http://mustache.github.io/mustache.5.html" target="_new">mustache</a></i> format.</p>
    <p>For example, when a template of:
    <pre>Hello {{name}}. Today is {{date}}</pre>
    <p>receives a message containing:
    <pre>{
  name: "Fred",
  date: "Monday"
  payload: ...
}</pre>
    <p>The resulting payload will be:
    <pre>Hello Fred. Today is Monday</pre>
</script>

<script type="text/javascript">
    RED.nodes.registerType('template',{
        color:"rgb(243, 181, 103)",
        category: 'function',
        defaults: {
            name: {value:""},
            field: {value:"payload"},
            format: {value:"handlebars"},
            template: {value:"This is the payload: {{payload}} !"},
        },
        inputs:1,
        outputs:1,
        icon: "template.png",
        label: function() {
            return this.name;
        },
        oneditprepare: function() {
            var that = this;
            function templateDialogResize() {
                var rows = $("#dialog-form>div:not(.node-text-editor-row)");
                var height = $("#dialog-form").height();
                for (var i=0;i<rows.size();i++) {
                    height -= $(rows[i]).outerHeight(true);
                }
                var editorRow = $("#dialog-form>div.node-text-editor-row");
                height -= (parseInt(editorRow.css("marginTop"))+parseInt(editorRow.css("marginBottom")));
                $(".node-text-editor").css("height",height+"px");
                that.editor.resize();
            };
            $( "#dialog" ).on("dialogresize", templateDialogResize);
            $( "#dialog" ).one("dialogopen", function(ev) {
                var size = $( "#dialog" ).dialog('option','sizeCache-template');
                if (size) {
                    $("#dialog").dialog('option','width',size.width);
                    $("#dialog").dialog('option','height',size.height);
                    templateDialogResize();
                }
            });
            $( "#dialog" ).one("dialogclose", function(ev,ui) {
                var height = $( "#dialog" ).dialog('option','height');
                $( "#dialog" ).off("dialogresize",templateDialogResize);
            });
            this.editor = RED.editor.createEditor({
                id: 'node-input-template-editor',
                mode: 'ace/mode/html',
                value: $("#node-input-template").val()
            });
            RED.library.create({
                url:"functions", // where to get the data from
                type:"function", // the type of object the library is for
                editor:that.editor, // the field name the main text body goes to
                fields:['name','outputs']
            });
            this.editor.focus();
            
            $("#node-input-format").change(function() {
                var mod = "ace/mode/"+$("#node-input-format").val();
                that.editor.getSession().setMode({
                   path: mod,
                   v: Date.now()
                })
            });
        },
        oneditsave: function() {
            $("#node-input-template").val(this.editor.getValue())
            delete this.editor;
        }
    });
</script>