API request: WebEngine settings

[Peter Zhelezniakov]

We have several requests for customization of various aspects of WebEngine/WebView behavior:
http://javafx-jira.kenai.com/browse/RT-15684
http://javafx-jira.kenai.com/browse/RT-15008

The proposal is to add a new interface, javafx.scene.web.Settings. The Settings interface would control three preferences for now. Over time, more will likely be added:
- whether JavaScript execution is enabled in a WebEngine;
- whether context menus are enabled;
- location of a user CSS applied to pages loaded into a WebEngine.

An instance would be obtained from a new method: WebEngine.getSettings(). So a typical call would be
	webEngine.getSettings().setJavaScriptEnabled(false);

Here is some javadoc:
------------------------------------------------------------------------
package javafx.scene.web;

/**
 * Settings applied to a {@link WebEngine} object.
 * 
 * @see WebEngine#getSettings()
 */
public interface Settings {
    
    /**
     * Returns whether JavaScript execution is enabled.
     */
    public boolean isJavaScriptEnabled();
    
    /**
     * Enables or disables JavaScript execution.
     */
    public void setJavaScriptEnabled(boolean enable);
    
    /**
     * Returns whether context menus are enabled.
     */
    public boolean isContextMenuEnabled();
    
    /**
     * Enables or disables context menus.
     */
    public void setContextMenuEnabled(boolean enable);
    
    /**
     * Returns location of the user stylesheet as a string URL.
     */
    public String getUserStylesheetLocation();
    
    /**
     * Sets location of the user stylesheet.
     * @param url stylesheet URL. This should be a local URL, i.e. either one
     *      of {@code 'data:'}, {@code 'file:'}, or {@code 'jar:'}. Remote URLs
     *      are not allowed for security reasons.
     */
    public void setUserStylesheetLocation(String url);
}

class WebEngine {
    /**
     * Returns settings for this {@code WebEngine} object.
     */
    public Settings getSettings();
}
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-- 
Peter