130 lines
4.5 KiB
Text
130 lines
4.5 KiB
Text
calpa.html Java package
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Changes since Version 2.0 beta
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Version 2.021
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- Verison 2.02 was very short-lived. The system font bug in Java 2
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which had been pointed out in the KNOWN PROBLEMS of readme.txt was
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causing a number of unforseen problems for CalPane users when the
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<FONT face=xxx> tag was used. Regrettably therefore the support of
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system fonts has once again been disabled within CalPane. The code
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will be reactivated when JavaSoft have fixed the Java 2 bug.
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Version 2.02
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- New methods in CalHTMLPane to force synchronous loading of
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documents:
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setLoadSynchronously(boolean b)
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isLoadSynchronouslyEnabled()
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If loadSynchronously is enabled then showHTMLDocument() methods
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will not return until a document has loaded. In addition documents
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loading from activated hyperlinks will also load synchronously.
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Loading synchronously effectively blocks the current AWT thread
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which will reduce the responsiveness of CalPane, but can be useful
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for programmers who want to be sure that a document has loaded
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before proceeding with another operation. Generally it is better
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to use the callback methods in CalHTMLObserver to determine when a
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document has finished loading.
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- New method in CalHTMLPane to allow access to form components:
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getIDComponents(String targetFrame)
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This method returns a Hashtable containing all components in the
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target frame which have the HTML 'id' attribute, as for example:
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<INPUT type=text name=username id=username>
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This method allows programmers to get handles to HTML form
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components after they have been created, either to monitor/
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manipulate their state, or programmatically fire a form submission.
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If the target frame is null then all id components within the
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CalPane are returned.
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- Enhancement of form submission to give feedback on custom
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components. When a custom component is included in a form via the
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OBJECT tag, the CalPane will call that component's toString() method
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and include this string in the form submission. This enables users
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to pass information regarding the state of the component by
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overriding the toString() method. For example, if you had added a
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JColorChooser like this:
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<OBJECT type=jcomponent jname=mycolorchooser name=chooser>
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...you could override toString() to pass the RGB values of the
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selected color. The form submission would include the text:
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chooser=[whatever toString() returns]
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- New methods added to CalHTMLPreferences to allow programmers to
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handle hyperlink events themselves:
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setAutomaticallyFollowHyperlinks(boolean)
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isAutomaticallyFollowHyperlinksEnabled()
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- New method added to CalHTMLPane for programmers using HTML
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Strings rather than URLs:
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scrollToReference(String ref, String targetFrame)
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- The CalGuide now includes a page containing answers to some common
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programming questions.
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- New methods added to CalHTMLPreferences:
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setDefaultFont(int displaySize, Font font)
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getDefaultFont(int displaySize)
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setDefaultButtonFont(int displaySize, Font font)
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getDefaultButtonFont(int displaySize)
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setDefaultFormTextFont(int displaySize, Font font)
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getDefaultFormTextFont(int displaySize)
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These methods have been incorporated to allow the setting of
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system fonts under Java 2. They replace the following 1.1 methods
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which are now deprecated:
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setDefaultFont(int, int, int)
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setFormFont(int, int, int, int)
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- New methods added to CalHTMLPreferences:
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setShowHyperlinkOnMouseFocus(boolean)
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isShowHyperlinkOnMouseFocusEnabled()
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This hyperlink policy is commonly used in help systems where it is
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obvious that all text is a hyperlink entry, and users only need to
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know which hyperlink currently has focus.
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- Bug Fixes: A few changes made to fix problems with borderless
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frames. In particular the 'frameborder' attribute was incorrectly
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implemented in FRAMESET tags: frameborder=no and frameborder=yes
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were working the wrong way round. In addition viewport borders
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were not being drawn around borderless framesets.
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Version 2.01b
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- Bug Fix: An exception was being thrown when loading a document
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containing over 8000 hyperlinks.
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- Bug Fix: The DOC_LOADED call from the top level frame was
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incorrectly being sent twice to the statusUpdate() method
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of CalHTMLObserver.
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- Bug Fix: The 'reload' argument sent to the CalPane's
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showHTMLDocument() method was being ignored.
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