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|
/*----------------------------------------------------------------------------\
| Help Tip 1.12 |
|-----------------------------------------------------------------------------|
| Created by Erik Arvidsson |
| (http://webfx.eae.net/contact.html#erik) |
| For WebFX (http://webfx.eae.net/) |
|-----------------------------------------------------------------------------|
| A tool tip like script that can be used for context help |
|-----------------------------------------------------------------------------|
| Copyright (c) 1999 - 2002 Erik Arvidsson |
|-----------------------------------------------------------------------------|
| This software is provided "as is", without warranty of any kind, express or |
| implied, including but not limited to the warranties of merchantability, |
| fitness for a particular purpose and noninfringement. In no event shall the |
| authors or copyright holders be liable for any claim, damages or other |
| liability, whether in an action of contract, tort or otherwise, arising |
| from, out of or in connection with the software or the use or other |
| dealings in the software. |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| This software is available under the three different licenses mentioned |
| below. To use this software you must chose, and qualify, for one of those. |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| The WebFX Non-Commercial License http://webfx.eae.net/license.html |
| Permits anyone the right to use the software in a non-commercial context |
| free of charge. |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| The WebFX Commercial license http://webfx.eae.net/commercial.html |
| Permits the license holder the right to use the software in a commercial |
| context. Such license must be specifically obtained, however it's valid for |
| any number of implementations of the licensed software. |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| GPL - The GNU General Public License http://www.gnu.org/licenses/gpl.txt |
| Permits anyone the right to use and modify the software without limitations |
| as long as proper credits are given and the original and modified source |
| code are included. Requires that the final product, software derivate from |
| the original source or any software utilizing a GPL component, such as |
| this, is also licensed under the GPL license. |
|-----------------------------------------------------------------------------|
| 2002-09-27 | |
| 2001-11-25 | Added a resize to the tooltip if the document width is too |
| | small. |
| 2002-05-19 | IE50 did not recognise the JS keyword undefined so the test |
| | for scroll support was updated to be IE50 friendly. |
| 2002-07-06 | Added flag to hide selects for IE |
| 2002-10-04 | (1.1) Restructured and made code more IE garbage collector |
| | friendly. This solved the most nasty memory leaks. Also added |
| | support for hiding the tooltip if ESC is pressed. |
| 2002-10-18 | Fixed verrical position in case of scrolled document. |
| 2002-12-02 | Mozilla bug workaround related to mousedown and move. |
|-----------------------------------------------------------------------------|
| Dependencies: helptip.css (To set up the CSS of the help-tooltip class) |
|-----------------------------------------------------------------------------|
| Usage: |
| |
| <script type="text/javascript" src="helptip.js">< /script> |
| <link type="text/css" rel="StyleSheet" href="helptip.css" /> |
| |
| <a class="helpLink" href="?" onclick="showHelp(event, 'String to show'); |
| return false">Help</a> |
|-----------------------------------------------------------------------------|
| Created 2001-09-27 | All changes are in the log above. | Updated 2002-12-02 |
\----------------------------------------------------------------------------*/
function showHelpTip(e, sHtml, bHideSelects) {
// find anchor element
var el = e.target || e.srcElement;
while (el.tagName != "A")
el = el.parentNode;
// is there already a tooltip? If so, remove it
if (el._helpTip) {
helpTipHandler.hideHelpTip(el);
}
helpTipHandler.hideSelects = Boolean(bHideSelects);
// create element and insert last into the body
helpTipHandler.createHelpTip(el, sHtml);
// position tooltip
helpTipHandler.positionToolTip(e);
// add a listener to the blur event.
// When blurred remove tooltip and restore anchor
el.onblur = helpTipHandler.anchorBlur;
el.onkeydown = helpTipHandler.anchorKeyDown;
}
var helpTipHandler = {
hideSelects: false,
helpTip: null,
showSelects: function (bVisible) {
if (!this.hideSelects) return;
// only IE actually do something in here
var selects = [];
if (document.all)
selects = document.all.tags("SELECT");
var l = selects.length;
for (var i = 0; i < l; i++)
selects[i].runtimeStyle.visibility = bVisible ? "" : "hidden";
},
create: function () {
var d = document.createElement("DIV");
d.className = "help-tooltip";
d.onmousedown = this.helpTipMouseDown;
d.onmouseup = this.helpTipMouseUp;
document.body.appendChild(d);
this.helpTip = d;
},
createHelpTip: function (el, sHtml) {
if (this.helpTip == null) {
this.create();
}
var d = this.helpTip;
d.innerHTML = sHtml;
d._boundAnchor = el;
el._helpTip = d;
return d;
},
// Allow clicks on A elements inside tooltip
helpTipMouseDown: function (e) {
var d = this;
var el = d._boundAnchor;
if (!e) e = event;
var t = e.target || e.srcElement;
while (t.tagName != "A" && t != d)
t = t.parentNode;
if (t == d) return;
el._onblur = el.onblur;
el.onblur = null;
},
helpTipMouseUp: function () {
var d = this;
var el = d._boundAnchor;
el.onblur = el._onblur;
el._onblur = null;
el.focus();
},
anchorBlur: function (e) {
var el = this;
helpTipHandler.hideHelpTip(el);
},
anchorKeyDown: function (e) {
if (!e) e = window.event
if (e.keyCode == 27) { // ESC
helpTipHandler.hideHelpTip(this);
}
},
removeHelpTip: function (d) {
d._boundAnchor = null;
d.style.filter = "none";
d.innerHTML = "";
d.onmousedown = null;
d.onmouseup = null;
d.parentNode.removeChild(d);
//d.style.display = "none";
},
hideHelpTip: function (el) {
var d = el._helpTip;
/* Mozilla (1.2+) starts a selection session when moved
and this destroys the mouse events until reloaded
d.style.top = -el.offsetHeight - 100 + "px";
*/
d.style.visibility = "hidden";
//d._boundAnchor = null;
el.onblur = null;
el._onblur = null;
el._helpTip = null;
el.onkeydown = null;
this.showSelects(true);
},
positionToolTip: function (e) {
this.showSelects(false);
var scroll = this.getScroll();
var d = this.helpTip;
// width
if (d.offsetWidth >= scroll.width)
d.style.width = scroll.width - 10 + "px";
else
d.style.width = "";
// left
if (e.clientX > scroll.width - d.offsetWidth)
d.style.left = scroll.width - d.offsetWidth + scroll.left + "px";
else
d.style.left = e.clientX - 2 + scroll.left + "px";
// top
if (e.clientY + d.offsetHeight + 18 < scroll.height)
d.style.top = e.clientY + 18 + scroll.top + "px";
else if (e.clientY - d.offsetHeight > 0)
d.style.top = e.clientY + scroll.top - d.offsetHeight + "px";
else
d.style.top = scroll.top + 5 + "px";
d.style.visibility = "visible";
},
// returns the scroll left and top for the browser viewport.
getScroll: function () {
if (document.all && typeof document.body.scrollTop != "undefined") { // IE model
var ieBox = document.compatMode != "CSS1Compat";
var cont = ieBox ? document.body : document.documentElement;
return {
left: cont.scrollLeft,
top: cont.scrollTop,
width: cont.clientWidth,
height: cont.clientHeight
};
}
else {
return {
left: window.pageXOffset,
top: window.pageYOffset,
width: window.innerWidth,
height: window.innerHeight
};
}
}
};
|
