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Manual for RelativeLayers
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Limits extensions

Name

Limits -- define limits for a layer's position.

Synopsis

<SCRIPT LANGUAGE="JavaScript1.2" SRC="scripts/rl_limits.js"</SCRIPT>

Requires

Browser detection

Utility functions and classes

RelativeLayer

Methods

function RelativeLayer
{
void addLimit ( constant limitedEdge, constant validZone, String limitingLayerId, constant limitingLayerBorder, integer limitingLayerBorderOffset );
void clearLimits ( );
};

Description

This extension of the RelativeLayers class allows you to enforce an arbitrary number of positioning limits on a layer. These make it easy to ensure that dynamically positioned layers always stay in an area that is acceptable for your design.

Limits are evaluated in the order of their addition. This means that when there are conflicting rules, the last one will take precedence.

Details

Following is a detailed description of the elements listed in the synopsis.

Methods

RelativeLayer

addLimit
     Adds a limit to this layer.

Parameters

limitedEdge
the edge of the layer on which this rule applies. LEFTEDGE, TOPEDGE, RIGHTEDGE or BOTTOMEDGE
validZone
the zone in which the limited edge has to reside. LEFTSIDE, RIGHTSIDE, ABOVE or BELOW.
limitingLayerId
the id of the layer that will enforce the limit. Use an empty string to use the parent layer or window.
limitingLayerBorder
the border of the limiting layer that will enforce the limit. LEFT, RIGHT, TOP or BOTTOM
limitingLayerBorderOffset
the number of pixels from the reference layer border to define the valid area edge.

clearLimits
     Removes all the limits that were imposed on this layer.
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