<html>
<head>
<title>Adding/Removing Event Markers Dynamically</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<script type="text/javascript" language="javascript" src="./../js/AnyChartStock.js?v=1.9.0r9317"></script>
<!-- chart size settings -->
<style type="text/css">
#chartContainer {
width: 630px;
height: 520px;
float: left;
}
</style>
<script type="text/javascript" language="javascript">
// Creating new chart object.
var chart = new AnyChartStock("./../swf/AnyChartStock.swf?v=1.9.0r9317", "./../swf/Preloader.swf?v=1.9.0r9317");
// Setting XML config file.
chart.setXMLFile("config.xml");
// Writing the flash object into the page DOM.
chart.write("chartContainer");
// Create two auxiliary objects to store information about last
// added A group event marker
var groupALastInfo = {
date: new Date(Date.UTC(1999,10,1)),
index: 0
};
// And the same for B group
var groupBLastInfo = {
date: new Date(Date.UTC(1999,10,1)),
index: 0
};
// Auxiliary date increment function
function increaseDate(date) {
date.setUTCMonth(date.getUTCMonth() + 3);
}
// Auxiliary date decrement function
function decreaseDate(date) {
date.setUTCMonth(date.getUTCMonth() - 3);
}
// Auxiliary function to enable/disable buttons
function updateButtons() {
if (groupALastInfo.index == 0) {
document.getElementById("btnRemoveLastA").setAttribute("disabled", "disabled");
document.getElementById("btnRemoveAllA").setAttribute("disabled", "disabled");
}else {
document.getElementById("btnRemoveLastA").removeAttribute("disabled");
document.getElementById("btnRemoveAllA").removeAttribute("disabled");
}
if (groupBLastInfo.index == 0) {
document.getElementById("btnRemoveLastB").setAttribute("disabled", "disabled");
document.getElementById("btnRemoveAllB").setAttribute("disabled", "disabled");
}else {
document.getElementById("btnRemoveLastB").removeAttribute("disabled");
document.getElementById("btnRemoveAllB").removeAttribute("disabled");
}
}
//------------------------------------------------------------------
// Adding event markers
//------------------------------------------------------------------
/*
Function to add event marker to the group
groupId {String} id of the group, in which event marker is added
lastInfo {Object} link to the object with the last event marker added
labelPrefix {String} prefix of the event markers caption (for example for "A0" prefix is "A")
color: {String} color of the event markers text
*/
function addEventMarker(groupId, lastInfo, labelPrefix, color) {
chart.addEventMarker(groupId, {
date: lastInfo.date, // date is passed as string and formatted according to event markers input locale from config.xml
format: labelPrefix + lastInfo.index.toString(), // format: prefix + index (for example "A0") it is shown in caption
id: lastInfo.index.toString(), // unique (in group) id of event marker. If needed for later interaction with event marker
settings: {
font: {
color: color,
size: 10
}
},
attributes: {
markerCaption: labelPrefix + lastInfo.index.toString() // custom attribute, which is displayed in event markers tooltip
}
});
// apply the changes
if (chart.commitEventMarkersChanges()) { // if successful...
// update information about last marker
lastInfo.index++;
increaseDate(lastInfo.date);
// update the buttons state
updateButtons();
}
}
function addEventMarkerToGroupA() {
// adding marker to A group. See addEventMarker reference for more. @see addEventMarker
addEventMarker("idEventMarkersGroupA", groupALastInfo, "A", "#A80027");
}
function addEventMarkerToGroupB() {
// adding marker to B group. See addEventMarker reference for more. @see addEventMarker
addEventMarker("idEventMarkersGroupB", groupBLastInfo, "B", "#0027A8");
}
//------------------------------------------------------------------
// Removal of the last event marker
//------------------------------------------------------------------
/*
Function to remove event marker from the group
groupId {String} id if the group
lastInfo {Object} link to the object with information about the last event marker
*/
function removeLastEventMarker(groupId, lastInfo) {
var lastId = lastInfo.index-1;
if (lastId < 0) return;
// Remove event marker by its id and group id. See removeEventMarker reference for more. @see removeEventMarker
chart.removeEventMarker(groupId, lastId);
// Apply changes
if (chart.commitEventMarkersChanges()) { // if successful...
// Update information about the last added event marker. Now it's next to last.
lastInfo.index--;
decreaseDate(lastInfo.date);
// Update buttons state
updateButtons();
}
}
function removeLastEventMarkerFromGroupA() {
// Remove of the last event marker from A group. See removeLastEventMarker
removeLastEventMarker("idEventMarkersGroupA", groupALastInfo);
}
function removeLastEventMarkerFromGroupB() {
// Remove of the last event marker from B group. See removeLastEventMarker
removeLastEventMarker("idEventMarkersGroupB", groupBLastInfo);
}
//------------------------------------------------------------------
// Removal of all event markers
//------------------------------------------------------------------
/*
Function to remove all event markers from the group
groupId {String} id of the group
lastInfo {Object} link to the object with information about last event marker
*/
function removeAllEvetMarkers(groupId, lastInfo) {
/*
We know id of the last event marker and this id is set using simple increment,
so we just go by id from 0 to lastInfo.index
*/
for (var i = 0;i<lastInfo.index;i++)
chart.removeEventMarker(groupId, i.toString());
// Apply changes
if (chart.commitEventMarkersChanges()) {// if successful...
// Reset info about last event marker, to start adding new from the beginning
lastInfo.index = 0;
lastInfo.date = new Date(Date.UTC(1999,10,1));
// Update buttons states
updateButtons();
}
}
function removeAllEventMarkersFromGroupA() {
// remove all markers from A group. See removeAllEventMarker
removeAllEvetMarkers("idEventMarkersGroupA", groupALastInfo);
}
function removeAllEventMarkersFromGroupB() {
// remove all markers from B group. See removeAllEventMarker
removeAllEvetMarkers("idEventMarkersGroupB", groupBLastInfo);
}
</script>
<!-- table and other page elements settings -->
<style type="text/css">
table input {
width: 120px;
}
table.settings {
border-style: solid;
border-width: 1px;
border-color: #D0CDC9;
}
table.settings tr th {
font:normal 60% Verdana;
background-color: #DCD9D5;
font-weight:bold;
padding-bottom:5px;
padding-top:5px;
padding-left:10px;
text-align:left;
}
table.settings tr td {
background-color: #F8F4F0;
font:normal 70% Verdana;
padding-bottom:2px;
padding-top:2px;
padding-left:10px;
text-align:left;
}
</style>
</head>
<body>
<div id="chartContainer"><!-- Chart Container --></div>
<table class="settings">
<tr>
<th>Group A</th>
<th>Group B</th>
</tr>
<tr>
<td><input type="button" value="Add New" onclick="addEventMarkerToGroupA()"/></td>
<td><input type="button" value="Add New" onclick="addEventMarkerToGroupB()"/></td>
</tr>
<tr>
<td><input id="btnRemoveLastA" type="button" disabled="disabled" value="Remove Last" onclick="removeLastEventMarkerFromGroupA()" /><br /></td>
<td><input id="btnRemoveLastB" type="button" disabled="disabled" value="Remove Last" onclick="removeLastEventMarkerFromGroupB()" /><br /></td>
</tr>
<tr>
<td><input id="btnRemoveAllA" type="button" disabled="disabled" value="Remove All" onclick="removeAllEventMarkersFromGroupA()" /><br /></td>
<td><input id="btnRemoveAllB" type="button" disabled="disabled" value="Remove All" onclick="removeAllEventMarkersFromGroupB()" /><br /></td>
</tr>
</table>
</body>
</html>
Sample Description
How to use this sample?
In this sample you can add and remove markers to/from two groups clicking on "Add" and "Remove" buttons. Also, all added markers can be removed using "Remove all" buttons.
How it works
Event markers addings and removings are executed through addEventMarker and removeEventMarker methods. Changes in event markers are commited by commitEventMarkersChanges method call.
You can read more about event markers in Event Markers section.
AnyChartStock JavaScript API
This sample uses the following methods, properties and events from AnyChartStock JavaScript API:
Prerequisites
This section lists all configuration, data and auxiliary files required for this sample.
Configuration file
CSV files
SWF files
- AnyChartStock.swf - AnyChart Stock component.
- Preloader.swf - AnyChart Stock helper component that loads the main component (AnyChartStock.swf) and displays loading progress.
JavaScript Libraries
- AnyChartStock.js - A JavaScript library that is shipped with AnyChart Stock component. It is used to embed the component into HTML DOM and to comunicate with the Flash part.
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