node-red/nodes/core/logic/15-change.html

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  Copyright 2013, 2016 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

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  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.
-->

<script type="text/x-red" data-template-name="change">
    <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:0;">
        <label><i class="fa fa-list"></i> <span data-i18n="change.label.rules"></span></label>
    </div>
    <div class="form-row node-input-rule-container-row">
        <ol id="node-input-rule-container"></ol>
    </div>
</script>

<script type="text/x-red" data-help-name="change">
    <p>Set, change, delete or move properties of a message, flow context or global context.</p>
    <p>The node can specify multiple rules that will be applied in turn.</p>
    <p>The available operations are:</p>
    <ul>
        <li><b>Set</b> - set a property. The value can be a variety of different types, or
            can be taken from an existing message or context property.</li>
        <li><b>Change</b> - search &amp; replace parts of the property. If regular expressions
            are enabled, the <b>replace with</b> property can include capture groups, for
            example <code>$1</code>. Replace will only change the <b>type</b> if there
            is a complete match.</li>
        <li><b>Delete</b> - delete a property.</li>
        <li><b>Move</b> - move or rename a property.
    </ul>
</script>

<script type="text/javascript">
    RED.nodes.registerType('change', {
        color: "#E2D96E",
        category: 'function',
        defaults: {
            name: {value:""},
            rules:{value:[{t:"set",p:"payload",pt:"msg",to:"",tot:"str"}]},
            // legacy
            action: {value:""},
            property: {value:""},
            from: {value:""},
            to: {value:""},
            reg: {value:false}
        },
        inputs: 1,
        outputs: 1,
        icon: "swap.png",
        label: function() {
            if (this.name) {
                return this.name;
            }
            if (!this.rules) {
                if (this.action === "replace") {
                    return this._("change.label.set",{property:"msg."+this.property});
                } else if (this.action === "change") {
                    return this._("change.label.change",{property:"msg."+this.property});
                } else if (this.action === "move") {
                    return this._("change.label.move",{property:"msg."+this.property});
                } else {
                    return this._("change.label.delete",{property:"msg."+this.property});
                }
            } else {
                if (this.rules.length == 1) {
                    if (this.rules[0].t === "set") {
                        return this._("change.label.set",{property:(this.rules[0].pt||"msg")+"."+this.rules[0].p});
                    } else if (this.rules[0].t === "change") {
                        return this._("change.label.change",{property:(this.rules[0].pt||"msg")+"."+this.rules[0].p});
                    } else if (this.rules[0].t === "move") {
                        return this._("change.label.move",{property:(this.rules[0].pt||"msg")+"."+this.rules[0].p});
                    } else {
                        return this._("change.label.delete",{property:(this.rules[0].pt||"msg")+"."+this.rules[0].p});
                    }
                } else {
                    return this._("change.label.changeCount",{count:this.rules.length});
                }
            }
        },
        labelStyle: function() {
            return this.name ? "node_label_italic" : "";
        },
        oneditprepare: function() {
            var set = this._("change.action.set");
            var change = this._("change.action.change");
            var del = this._("change.action.delete");
            var move = this._("change.action.move");
            var to = this._("change.action.to");
            var search = this._("change.action.search");
            var replace = this._("change.action.replace");
            var regex = this._("change.label.regex");

            function resizeRule(rule) {
                var newWidth = rule.width();
                rule.find('.red-ui-typedInput').typedInput("width",newWidth-150);

            }
            $('#node-input-rule-container').css('min-height','300px').css('min-width','450px').editableList({
                addItem: function(container,i,opt) {
                    var rule = opt;
                    if (!rule.hasOwnProperty('t')) {
                        rule = {t:"set",p:"payload",to:"",tot:"str"};
                    }
                    if (rule.t === "change" && rule.re) {
                        rule.fromt = 're';
                        delete rule.re;
                    }
                    if (rule.t === "set" && !rule.tot) {
                        if (rule.to.indexOf("msg.") === 0 && !rule.tot) {
                            rule.to = rule.to.substring(4);
                            rule.tot = "msg";
                        } else {
                            rule.tot = "str";
                        }
                    }
                    if (rule.t === "move" && !rule.tot) {
                        rule.tot = "msg";
                    }

                    var row1 = $('<div/>').appendTo(container);
                    var row2 = $('<div/>',{style:"margin-top:8px;"}).appendTo(container);
                    var row3 = $('<div/>',{style:"margin-top:8px;"}).appendTo(container);
                    var row4 = $('<div/>',{style:"margin-top:8px;"}).appendTo(container);

                    var selectField = $('<select/>',{class:"node-input-rule-type",style:"width:110px; margin-right:10px;"}).appendTo(row1);
                    var selectOptions = [{v:"set",l:set},{v:"change",l:change},{v:"delete",l:del},{v:"move",l:move}];
                    for (var i=0; i<4; i++) {
                        selectField.append($("<option></option>").val(selectOptions[i].v).text(selectOptions[i].l));
                    }

                    var propertyName = $('<input/>',{style:"width:250px",class:"node-input-rule-property-name",type:"text"})
                        .appendTo(row1)
                        .typedInput({types:['msg','flow','global']});

                    $('<div/>',{style:"display:inline-block;text-align:right; width:120px; padding-right:10px; box-sizing:border-box;"})
                        .text(to)
                        .appendTo(row2);
                    var propertyValue = $('<input/>',{style:"width:250px",class:"node-input-rule-property-value",type:"text"})
                        .appendTo(row2)
                        .typedInput({default:'str',types:['msg','flow','global','str','num','bool','json','date']});

                    var row3_1 = $('<div/>').appendTo(row3);
                    $('<div/>',{style:"display:inline-block;text-align:right; width:120px; padding-right:10px; box-sizing:border-box;"})
                        .text(search)
                        .appendTo(row3_1);
                    var fromValue = $('<input/>',{style:"width:250px",class:"node-input-rule-property-search-value",type:"text"})
                        .appendTo(row3_1)
                        .typedInput({default:'str',types:['msg','flow','global','str','re','num','bool']});

                    var row3_2 = $('<div/>',{style:"margin-top:8px;"}).appendTo(row3);
                    $('<div/>',{style:"display:inline-block;text-align:right; width:120px; padding-right:10px; box-sizing:border-box;"})
                        .text(replace)
                        .appendTo(row3_2);
                    var toValue = $('<input/>',{style:"width:250px",class:"node-input-rule-property-replace-value",type:"text"})
                        .appendTo(row3_2)
                        .typedInput({default:'str',types:['msg','flow','global','str','num','bool','json']});

                    $('<div/>',{style:"display:inline-block;text-align:right; width:120px; padding-right:10px; box-sizing:border-box;"})
                        .text(to)
                        .appendTo(row4);
                    var moveValue = $('<input/>',{style:"width:250px",class:"node-input-rule-property-move-value",type:"text"})
                        .appendTo(row4)
                        .typedInput({default:'msg',types:['msg','flow','global']});

                    selectField.change(function() {
                        var width = $("#node-input-rule-container").width();
                        var type = $(this).val();
                        if (type == "set") {
                            row2.show();
                            row3.hide();
                            row4.hide();
                        } else if (type == "change") {
                            row2.hide();
                            row3.show();
                            row4.hide();
                        } else if (type == "delete") {
                            row2.hide();
                            row3.hide();
                            row4.hide();
                        } else if (type == "move") {
                            row2.hide();
                            row3.hide();
                            row4.show();
                        }
                        resizeRule(container);
                    });

                    selectField.val(rule.t);
                    propertyName.typedInput('value',rule.p);
                    propertyName.typedInput('type',rule.pt);
                    propertyValue.typedInput('value',rule.to);
                    propertyValue.typedInput('type',rule.tot);
                    moveValue.typedInput('value',rule.to);
                    moveValue.typedInput('type',rule.tot);
                    fromValue.typedInput('value',rule.from);
                    fromValue.typedInput('type',rule.fromt);
                    toValue.typedInput('value',rule.to);
                    toValue.typedInput('type',rule.tot);
                    selectField.change();

                    var newWidth = $("#node-input-rule-container").width();
                    resizeRule(container);
                },
                resizeItem: resizeRule,
                removable: true,
                sortable: true
            });

            if (!this.rules) {
                var rule = {
                    t:(this.action=="replace"?"set":this.action),
                    p:this.property,
                    pt:"msg"
                }

                if ((rule.t === "set")||(rule.t === "move")) {
                    rule.to = this.to;
                } else if (rule.t === "change") {
                    rule.from = this.from;
                    rule.to = this.to;
                    rule.re = this.reg;
                }

                delete this.to;
                delete this.from;
                delete this.reg;
                delete this.action;
                delete this.property;

                this.rules = [rule];
            }

            for (var i=0; i<this.rules.length; i++) {
                var rule = this.rules[i];
                $("#node-input-rule-container").editableList('addItem',rule);
            }
        },
        oneditsave: function() {
            var rules = $("#node-input-rule-container").editableList('items');
            var ruleset;
            var node = this;
            node.rules= [];
            rules.each(function(i) {
                var rule = $(this);
                var type = rule.find(".node-input-rule-type").val();
                var r = {
                    t:type,
                    p:rule.find(".node-input-rule-property-name").typedInput('value'),
                    pt:rule.find(".node-input-rule-property-name").typedInput('type')
                };
                if (type === "set") {
                    r.to = rule.find(".node-input-rule-property-value").typedInput('value');
                    r.tot = rule.find(".node-input-rule-property-value").typedInput('type');
                } else if (type === "move") {
                    r.to = rule.find(".node-input-rule-property-move-value").typedInput('value');
                    r.tot = rule.find(".node-input-rule-property-move-value").typedInput('type');
                } else if (type === "change") {
                    r.from = rule.find(".node-input-rule-property-search-value").typedInput('value');
                    r.fromt = rule.find(".node-input-rule-property-search-value").typedInput('type');
                    r.to = rule.find(".node-input-rule-property-replace-value").typedInput('value');
                    r.tot = rule.find(".node-input-rule-property-replace-value").typedInput('type');
                }
                node.rules.push(r);
            });
        },
        oneditresize: function(size) {
            var rows = $("#dialog-form>div:not(.node-input-rule-container-row)");
            var height = size.height;
            for (var i=0; i<rows.size(); i++) {
                height -= $(rows[i]).outerHeight(true);
            }
            var editorRow = $("#dialog-form>div.node-input-rule-container-row");
            height -= (parseInt(editorRow.css("marginTop"))+parseInt(editorRow.css("marginBottom")));

            $("#node-input-rule-container").editableList('height',height);
        }
    });
</script>