A ChangeList represents a list of changed methods that reside on a file in fileOut format. The classes and methods in my list are not necessarily in this image! Used as the model for both Version Lists and Changed Methods (in Screen Menu, Changes...). Note that the two kinds of window have different controller classes!!

It holds three lists:
changeList - a list of ChangeRecords
list - a list of one-line printable headers
listSelections - a list of Booleans (true = selected, false = not selected) multiple OK.
listIndex
Items that are removed (removeDoits, remove an item) are removed from all three lists.
Most recently clicked item is the one showing in the bottom pane.

	initialization-release
	addItem:text: changeListButtonSpecs initialize openAsMorphName:multiSelect: optionalButtonHeight optionalButtonsView

menu actions

acceptFrom: browseCurrentVersionsOfSelections buildMorphicCodePaneWith: changeListKey:from: changeListMenu: compareToCurrentVersion deselectAll destroyCurrentCodeOfSelections fileInSelections fileOutSelections invertSelections optionalButtonRow perform:orSendTo: removeDoIts removeExistingMethodVersions removeNonSelections removeOlderMethodVersions removeSelections selectAll selectAllConflicts selectConflicts selectConflicts: selectConflictsWith selectMethodsForThisClass selectSuchThat selectSuchThat: selectUnchangedMethods

	scanning
	scanCategory scanCategory:class:meta:stamp: scanFile:from:to:

	viewing access
	annotation contents contents: contentsDiffedFromCurrent contentsSymbolQuints diffedVersionContents list listIndex listSelectionAt: listSelectionAt:put: restoreDeletedMethod selectedClassOrMetaClass selectedMessageName toggleListIndex: undiffedContents

	public access
	browseFile: browseRecent: browseRecentLog browseStream: getRecentLocatorWithPrompt:

	accessing	top
	changeList
	currentChange return the current change being viewed, or nil if none
	file
	listHasSingleEntry does the list of changes have only a single item?
	listSelections
	setLostMethodPointer:
	showsVersions

	initialization-release	top
	addItem:text:
	changeListButtonSpecs
	initialize Initialize a blank ChangeList. Set the contentsSymbol to reflect whether diffs will initally be shown or not
	openAsMorphName:multiSelect: Open a morphic view for the messageSet, whose label is labelString. The listView may be either single or multiple selection type
	optionalButtonHeight
	optionalButtonsView Answer the a View containing the optional buttons

	menu actions	top
	acceptFrom:
	browseCurrentVersionsOfSelections Opens a message-list browser on the current in-memory versions of all methods that are currently seleted
	buildMorphicCodePaneWith:
	changeListKey:from: Respond to a Command key in the list pane.
	changeListMenu: Fill aMenu up so that it comprises the primary changelist-browser menu
	compareToCurrentVersion If the current selection corresponds to a method in the system, then spawn a window showing the diffs as text
	deselectAll Deselect all items in the list pane, and clear the code pane
	destroyCurrentCodeOfSelections Actually remove from the system any in-memory methods with class and selector identical to items current selected. This may seem rather arcane but believe me it has its great uses, when trying to split out code. To use effectively, first file out a change set that you wish to split off. Then open a ChangeList browser on that fileout. Now look through the methods, and select any of them which you want to remove completely from the system, then issue this command. For those methods where you have made changes to pre-existing versions, of course, you won't want to remove them from the system, so use this mechanism with care!
	fileInSelections
	fileOutSelections
	invertSelections Invert the selectedness of each item in the changelist
	optionalButtonRow Answer a row of buttons to occur in a tool pane
	perform:orSendTo: Selector was just chosen from a menu by a user. If I can respond, then perform it on myself. If not, send it to otherTarget, presumably the editPane from which the menu was invoked.
	removeDoIts Remove doits from the receiver, other than initializes. 1/26/96 sw
	removeExistingMethodVersions Remove all up to date version of entries from the receiver
	removeNonSelections Remove the unselected items from the receiver.
	removeOlderMethodVersions Remove older versions of entries from the receiver.
	removeSelections Remove the selected items from the receiver. 9/18/96 sw
	selectAll
	selectAllConflicts Selects all method definitions in the receiver which are also in any existing change set in the system. This makes no statement about whether the content of the methods differ, only whether there is a change represented.
	selectConflicts Selects all method definitions for which there is ALSO an entry in changes
	selectConflicts: Selects all method definitions for which there is ALSO an entry in the specified changeSet or changList
	selectConflictsWith Selects all method definitions for which there is ALSO an entry in the specified changeSet or changList chosen by the user. 4/11/96 tk
	selectMethodsForThisClass
	selectSuchThat query the user for a selection criterio. By Lex Spoon. NB: the UI for invoking this from a changelist browser is currently commented out; to reenfranchise it, you'll need to mild editing to ChangeList method #changeListMenu:
	selectSuchThat: select all changes for which block returns true
	selectUnchangedMethods Selects all method definitions for which there is already a method in the current image, whose source is exactly the same. 9/18/96 sw

	scanning	top
	scanCategory Scan anything that involves more than one chunk; method name is historical only
	scanCategory:class:meta:stamp:
	scanFile:from:to:

	viewing access	top
	annotation Answer the string to be shown in an annotation pane. Make plain that the annotation is associated with the current in-image version of the code, not of the selected disk-based version, and if the corresponding method is missing from the in-image version, mention that fact.
	contents Answer the contents string, obeying diffing directives if needed
	contents: Set textOrString to be the contents of the receiver.
	contentsDiffedFromCurrent Answer the contents diffed forward from current (in-memory) method version
	contentsSymbolQuints Answer a list of quintuplets representing information on the alternative views available in the code pane
	diffedVersionContents Answer diffed version contents, maybe pretty maybe not
	list
	listIndex
	listSelectionAt:
	listSelectionAt:put:
	restoreDeletedMethod If lostMethodPointer is not nil, then this is a version browser for a method that has been removed. In this case we want to establish a sourceCode link to prior versions. We do this by installing a dummy method with the correct source code pointer prior to installing this version.
	selectedClassOrMetaClass
	selectedMessageName
	toggleListIndex:
	undiffedContents

	instance creation	top
	open:name:multiSelect: Create a standard system view for the messageSet, whose label is aString. The listView may be either single or multiple selection type
	openAsMorph:name:multiSelect: Open a morphic view for the messageSet, whose label is labelString. The listView may be either single or multiple selection type

	public access	top
	browseFile: ChangeList browseFile: 'AutoDeclareFix.st'
	browseRecent: ChangeList browseRecent: 5000
	browseRecentLog ChangeList browseRecentLog
	browseStream: Opens a changeList on a fileStream
	getRecentLocatorWithPrompt: Prompt with a menu of how far back to go. Return nil if user backs out. Otherwise return the number of characters back from the end of the .changes file the user wishes to include