133 lines
4.1 KiB
HTML
133 lines
4.1 KiB
HTML
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<html>
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<head>
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<style type="text/css">
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<!--
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.popup {
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width: 20em;
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height: 12em;
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text-align: center;
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border: 3px solid black;
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background-color: white;
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padding: 5%;
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z-index: 100;
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position: absolute;
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}
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.popup#alertDisp[aria-hidden="true"]
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{ display : none; }
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.popup#alertVis[aria-hidden="true"]
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{ visibility: hidden; }
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.popup > div {
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clear: both;
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text-align: right;
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margin-top: 5px;
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}
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-->
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</style>
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<script type="text/javascript">
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<!--
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var gFocusItem = null;
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function doFocus() {
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try {
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if (gFocusItem != null) {
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gFocusItem.focus();
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gFocusItem=null;
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}
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} catch (error) {
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alert("DEBUG: error in doFocus()");
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}
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}
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var FOCUS_TEXT = "This div is created in the DOM as needed. Focus is set to it when it is displayed";
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var NOFOCUS_TEXT = "This div is created in the DOM as needed. Focus has NOT been set to it";
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var counter = 0;
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function createRemoveAlert(alertText, bGiveFocus)
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{
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var popupDiv = document.getElementById("insertedAlert");
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if (popupDiv) {
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// Remove alert
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var divParent = document.getElementById("alertParent");
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divParent.removeChild(popupDiv);
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return;
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}
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// Create alert
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var popupDiv = document.createElement("div");
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var dataNode = document.createTextNode(alertText);
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popupDiv.appendChild(dataNode);
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var close = document.createElement("a");
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close.setAttribute("onclick", "createRemoveAlert();");
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close.setAttribute("href", "#");
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var closeText = document.createTextNode("close");
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close.appendChild(closeText);
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var closeDiv = document.createElement("div");
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closeDiv.appendChild(close);
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popupDiv.appendChild(closeDiv);
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// try parenting to a div on the page rather than document.body
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var divParent = document.getElementById("alertParent");
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divParent.appendChild(popupDiv);
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popupDiv.id = "insertedAlert";
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popupDiv.setAttribute("role", "alert");
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popupDiv.tabIndex = "-1";
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popupDiv.className = "popup";
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if (bGiveFocus) {
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gFocusItem = popupDiv;
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setTimeout("doFocus();", 0);
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}
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return false; // handled
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}
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function toggleAlert(alertId, bGiveFocus, contentId) {
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var alertDiv = document.getElementById(alertId);
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if (alertDiv.getAttribute("aria-hidden") == "true") {
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alertDiv.removeAttribute("aria-hidden");
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}
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else {
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alertDiv.setAttribute("aria-hidden", "true");
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}
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if (bGiveFocus == true) {
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gFocusItem = (contentId)? document.getElementById(contentId) : alertDiv;
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setTimeout("doFocus();",0);
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}
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}
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-->
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</script>
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</head>
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<body>
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<div><button onclick="createRemoveAlert(FOCUS_TEXT, true);">Create and Focus</button></div>
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<div><button onclick="createRemoveAlert(NOFOCUS_TEXT, false);">Create - no Focus</button></div>
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<div><button onclick="toggleAlert('alertVis', true);">Show (via visibility style) and Focus</button></div>
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<div><button onclick="toggleAlert('alertVis');">Show (via visibility style) - no Focus</button></div>
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<div><button onclick="toggleAlert('alertDisp', true);">Show (via display style) and Focus</button></div>
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<div><button onclick="toggleAlert('alertDisp');">Show (via display style) - no Focus</button></div>
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<div><button onclick="toggleAlert('alertDisp', true, 'closeLink');">Show (via display style) and put focus inside alert (on link)</button></div>
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<div role="alert" tabindex="-1" class="popup" aria-hidden="true" id="alertVis">
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<span>This popup is created as a div in the HTML content, rather than being created in the DOM at
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the time of use. The visibility style is changed from "hidden" to "visible"
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to hide and show it.
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</span>
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<div style="text-align:right;margin-top:10px;">
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<a href="javascript:toggleAlert('alertVis');">close</a>
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</div>
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</div>
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<div role="alert" tabindex="-1" class="popup" aria-hidden="true" id="alertDisp">
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<span>This popup is created as a div in the HTML content, rather than being created in the DOM at
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the time of use. The display style is changed from "none" to "block"
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to hide and show it.
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</span>
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<div style="text-align:right;margin-top:10px;">
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<a id="closeLink" href="javascript:toggleAlert('alertDisp');">close</a>
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</div>
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</div>
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<div id="alertParent">
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</div>
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<p>Some text after the alert to help with selection in order to view alert source</p>
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</body>
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</html>
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