Method updateMatchButtons

src/main/java/matcher/gui/BottomPane.java:100–137

()

	}

	private void updateMatchButtons() {
		ClassInstance clsA = srcPane.getSelectedClass();
		ClassInstance clsB = dstPane.getSelectedClass();

		MemberInstance<?> memberA = srcPane.getSelectedMethod();
		if (memberA == null) memberA = srcPane.getSelectedField();
		MemberInstance<?> memberB = dstPane.getSelectedMethod();
		if (memberB == null) memberB = dstPane.getSelectedField();

		MethodVarInstance varA = srcPane.getSelectedMethodVar();
		MethodVarInstance varB = dstPane.getSelectedMethodVar();

		matchButton.setDisable(!canMatchClasses(clsA, clsB) && !canMatchMembers(memberA, memberB) && !canMatchVars(varA, varB));
		/*
		 * class-null   class-matchable   class-matched    member-null    member-matchable    member-matched    var-null    var-matchable    var-matched   disabled   text          target
		 * 1            x                 x                x              x                   x                 x           x                x             1          unmatchable   -
		 * 0            0                 x                x              x                   x                 x           x                x             0          matchable     cls
		 * 0            1                 0                x              x                   x                 x           x                x             0          unmatchable   cls
		 * 0            1                 1                1              x                   x                 x           x                x             1          unmatchable   -
		 * 0            1                 1                0              0                   x                 x           x                x             0          matchable     member
		 * 0            1                 1                0              1                   0                 x           x                x             0          unmatchable   member
		 * 0            1                 1                0              1                   1                 1           x                x             1          unmatchable   -
		 * 0            1                 1                0              1                   1                 0           0                x             0          matchable     var
		 * 0            1                 1                0              1                   1                 0           1                0             0          unmatchable   var
		 * 0            1                 1                0              1                   1                 0           1                1             1          unmatchable   -
		 */
		matchableButton.setDisable(clsA == null || clsA.isMatchable() && (clsA.hasMatch() || !clsA.hasPotentialMatch())
				&& (memberA == null || memberA.isMatchable() && (memberA.hasMatch() || !memberA.hasPotentialMatch())
				&& (varA == null || varA.isMatchable() && (varA.hasMatch() || !varA.hasPotentialMatch()))));
		matchableButton.setText(clsA != null && (!clsA.isMatchable()
				|| memberA != null && (!memberA.isMatchable()
						|| varA != null && !varA.isMatchable())) ? "matchable" : "unmatchable");
		unmatchClassButton.setDisable(!canUnmatchClass(clsA));
		unmatchMemberButton.setDisable(!canUnmatchMember(memberA));
		unmatchVarButton.setDisable(!canUnmatchVar(varA));

		matchPerfectMembersButton.setDisable(!canMatchPerfectMembers(clsA));
	}

	// match / unmatch actions implementation