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‎Client-Side Components/UI Scripts/Custom Change Schedule/README.md‎

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# 🧾 ServiceNow Change Schedule Enhancement
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### _(UI Scripts: `sn_chg_soc.change_soc`, `sn.chg_soc.config`, `sn.chg_soc.data`)_
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---
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## 📘 Overview
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This customization extends the **ServiceNow Change Schedule (Change Calendar)** functionality.
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The enhancement adds visibility and interactivity to the Change Calendar by including:
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- A **Short Description** column in the Change Schedule view.
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- A **configurable UI** allowing users to toggle visibility of columns such as _Configuration Item_, _Short Description_, and _Duration_.
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- Integration of additional data services for fetching and rendering change records with enhanced details.
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- A **Change Schedule button** that refreshes and displays these changes dynamically.
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The result is a more informative and user-friendly Change Schedule interface for Change Managers, CAB members, and ITSM users.
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---
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## 🧩 Architecture
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| Module | Description |
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|--------|-------------|
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| **`sn_chg_soc.change_soc`** | Main controller and directive for the Change Schedule Gantt Chart UI. Handles initialisation, rendering, zoom, and popovers. |
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| **`sn.chg_soc.config`** | Manages configuration settings for displayed columns and schedules (blackout, maintenance). Allows toggling visibility. |
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| **`sn.chg_soc.data`** | Provide the data on the gantt chat from the change records
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Requirement:
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As an ITIL user, you can click the Change Schedule button to navigate directly to the Change Schedule view.
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This allows you to see all planned changes and plan your own changes accordingly, especially useful for customers who do not have a well-established CMDB integrated with Discovery.
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<img width="1505" height="809" alt="image" src="https://github.com/user-attachments/assets/4af1b6cb-87e6-4a53-a243-6592fbf548c1" />
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<img width="1913" height="877" alt="image" src="https://github.com/user-attachments/assets/fc0a6f46-febd-45bb-a741-78462fa1512a" />
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‎Client-Side Components/UI Scripts/Custom Change Schedule/change_soc.js‎

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‎Client-Side Components/UI Scripts/Custom Change Schedule/config.js‎

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angular.module("sn.chg_soc.config", ["sn.common"])
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.service("configService", ["dataService", "ganttChart", "urlService", "SOC", function(dataService, ganttChart, urlService, SOC) {
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var configService = this;
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configService.showConfigItem = true;
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configService.showDuration = true;
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configService.showShortDesc=true;
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configService.showBlackoutOption = true;
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configService.showBlackoutSchedules = true;
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configService.showMaintOption = true;
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configService.showMaintSchedules = true;
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configService.childRecords = {};
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configService.setChildRecords = function(childTables) {
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for (var tableName in childTables)
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configService.childRecords[tableName] = {
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inputId: tableName + "Option",
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label: childTables[tableName].__label,
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name: tableName + "Show",
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show: true,
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change: updateChildRecords
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};
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};
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function updateChildRecords(tableName) {
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var gantt = ganttChart.getGantt(urlService.socId);
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var ganttTasks = gantt.getTaskByTime();
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for (var i = 0; i < ganttTasks.length; i++)
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if (ganttTasks[i].parent && ganttTasks[i].table === tableName)
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ganttTasks[i].__visible = configService.childRecords[tableName].show;
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gantt.attachEvent("onBeforeTaskDisplay", function(id, task) {
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if (task.parent)
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return task.__visible;
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return true;
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});
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gantt.templates.grid_open = gridOpen;
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gantt.render();
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}
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function gridOpen(task) {
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var gantt = ganttChart.getGantt(urlService.socId);
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var children = gantt.getChildren(task.id);
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for (var i = 0; i < children.length; i++) {
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var childTask = gantt.getTask(children[i]);
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if (childTask.__visible)
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return "<div class='gantt_tree_icon gantt_" + (task.$open ? "close" : "open") +
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" icon-vcr-" + (task.$open ? "down" : "right") + "'></div>";
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}
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return "<div class='gantt_tree_icon gantt_blank'></div>";
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}
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}])
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.directive("socAsideConfig", ["getTemplateUrl", "configService", "ganttChart", "dataService", "objectKeysLengthFilter", "SOC", "i18n", function(getTemplateUrl, configService, ganttChart, dataService, objectKeysLengthFilter, SOC, i18n) {
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"use strict";
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return {
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restrict: "A",
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templateUrl: getTemplateUrl("sn_chg_soc_aside_config_body.xml"),
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scope: {
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socDefId: "="
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},
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controller: function($scope, objectKeysLengthFilter) {
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// $scope.showConfigItem = configService.showConfigItem;
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// $scope.showDuration = configService.showDuration;
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$scope.showBlackoutOption = configService.showBlackoutOption;
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$scope.showShortDesc = configService.showShortDesc;
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$scope.showBlackoutSchedules = configService.showBlackoutSchedules;
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$scope.showMaintOption = configService.showMaintOption;
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$scope.showMaintSchedules = configService.showMaintSchedules;
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$scope.childRecords = configService.childRecords;
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$scope.objectKeysLengthFilter = objectKeysLengthFilter;
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$scope.messages = {
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"Child Records": i18n.getMessage("Child Records"),
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"Columns": i18n.getMessage("Columns"),
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"Configuration Item": i18n.getMessage("Configuration Item"),
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"Short Description": i18n.getMessage("Short Description"),
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"Duration": i18n.getMessage("Duration"),
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"Related Records": i18n.getMessage("Related Records"),
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"Schedules": i18n.getMessage("Schedules"),
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"Blackout": i18n.getMessage("Blackout"),
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"Maintenance": i18n.getMessage("Maintenance")
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};
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$scope.updateColumnLayout = function(columnId) {
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var gantt = ganttChart.getGantt($scope.socDefId);
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var column = gantt.getGridColumn(columnId);
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if (SOC.COLUMN.CONFIG_ITEM === columnId) {
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configService.showConfigItem = !configService.showConfigItem;
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column.hide = !configService.showConfigItem;
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} else if (SOC.COLUMN.DURATION === columnId) {
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configService.showDuration = !configService.showDuration;
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column.hide = !configService.showDuration;
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} else if (SOC.COLUMN.SHORT_DESCRIPTION === columnId) {
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configService.showShortDesc = !configService.showShortDesc;
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column.hide = !configService.showShortDesc;
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} else
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return;
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gantt.render();
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};
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function getScheduleEvent(task, startDate, endDate, styleClass) {
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var gantt = ganttChart.getGantt($scope.socDefId);
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startDate = gantt.date.parseDate(startDate, "xml_date");
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endDate = gantt.date.parseDate(endDate, "xml_date");
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var sizes = gantt.getTaskPosition(task, startDate, endDate);
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var el = document.createElement("div");
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el.className = "schedule-bar " + styleClass;
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el.style.left = sizes.left + "px";
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el.style.width = sizes.width + "px";
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el.style.top = sizes.top + "px";
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return el;
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}
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var scheduleTaskLayer = function(task) {
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if ((!this.show_blackout && !this.show_maint) || (task.blackout_spans.length === 0 && task.maint_spans.length === 0))
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return;
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var wrapper = document.createElement("div");
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if (this.show_blackout && dataService.definition.show_blackout.value)
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task.blackout_spans.forEach(function(blackoutSpan) {
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wrapper.appendChild(getScheduleEvent(task, blackoutSpan.start, blackoutSpan.end, "blackout"));
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});
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if (this.show_maint && dataService.definition.show_maintenance.value)
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task.maint_spans.forEach(function(maintSpan) {
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wrapper.appendChild(getScheduleEvent(task, maintSpan.start, maintSpan.end, "maint"));
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});
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return wrapper;
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};
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$scope.updateScheduleLayer = function() {
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configService.showBlackoutSchedules = $scope.showBlackoutSchedules;
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configService.showMaintSchedules = $scope.showMaintSchedules;
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var ganttInstance = ganttChart.getInstance($scope.socDefId);
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ganttInstance.removeTaskLayer();
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if ($scope.showBlackoutSchedules || $scope.showMaintSchedules) {
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ganttInstance.addTaskLayer(scheduleTaskLayer.bind({
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show_blackout: $scope.showBlackoutSchedules,
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show_maint: $scope.showMaintSchedules
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}));
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ganttInstance.gantt.render();
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}
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};
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}
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};
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}]);

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