From acbd9daf077588e923093ddf4a89ded423c7c93f Mon Sep 17 00:00:00 2001
From: Alex Wang <yidaalex.wang@gmail.com>
Date: Sun, 20 Jan 2013 10:26:46 -0800
Subject: [PATCH 1/2] clean up and add .gitignore

---
 .DS_Store                | Bin 6148 -> 0 bytes
 .gitignore               |   2 ++
 VersionChecker/.DS_Store | Bin 6148 -> 0 bytes
 3 files changed, 2 insertions(+)
 delete mode 100644 .DS_Store
 create mode 100644 .gitignore
 delete mode 100644 VersionChecker/.DS_Store

diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 4e47e720adf22e10a7ae7f3c4cfe738e068cf527..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 6148
zcmeHK&1%~~5T13MR3bn4639{XltTz{!H_}@isOXlP$+R|4ozsKDAXc~Hdu0faNLSM
zL*Jt>(sN(O{bqMvYTV{%LYaZtZ!|lzBYi9Ohlo^rkTi)JMC3skYd)I42=}wjNzHlc
zKxM{wO~<rLca)rFbJ5~>iVX1F`E-VPJERW%F@O3x&UB1k{xwdZ+Y=+Oh&Jdg-B6zj
zN=Z{rN7TdfHQloJG@Hr&!MV`dWWuSB=f=b0-qrmc-)Cu2?(O|lwWa#<$}`XRy|v4W
zG*9%ftp|BhyzBP#u$v|~an!#ub{Um}q8;^3&zq?1p~u+gT4%5?UGznol)d+jt<k8}
zYV8F3t?^DUYBpc6-F!J7`<~}FzImI^cMo2jM-SuAUn=wRr0}B~S$8;vuP`2^<x{tx
zXFC6gxak<vTtQ(#7!U>)%z#^lywwHQm2$#>F!1yl;PoMZGKLN-i)QISW3B)|K1LdW
z%?C!#2^@wFD~srXD4Pnjsmfh3lud^}aB-o-%A!ptWh!GFS6R6miZa#V4@@|z(4w@$
zfG{x2z><Az@cw`N@B9C3k~|3m!oYvUfU0-8oi;wn?X7bk$9ru6{Qza*xXR-16c}bJ
fMl5f|TTmnL2W$XChm}QmAaW2eG)N;1ER=y?Pd#P$

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..00b41c6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+bin/
+.DS_Store
diff --git a/VersionChecker/.DS_Store b/VersionChecker/.DS_Store
deleted file mode 100644
index 1901893576b6608a67ab6ac65b32b9e03bf5627f..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 6148
zcmeHK&1%~~5T3Q2MoL@IC6J@YDTg$~1w#uxC?*NXA*IxY9GcKdmWfqVt+C`d;5Ze1
zh8*%1eUY9^-^TrBcN=P@xfa^&!0b0WJG0vTR_qTEiS{^d5_v@AKpAT;ia!Xqv)+-K
z@o=NyK4dRSWrP}cXXRgDfY+{05hauzrVH!0kCqK+Z9Z2MF;USZADUJE8V%DVFSfV8
zi(0+0^k~^}UFXTkagxPy(w5^a&fj$ga?(lSeiV*Qm0g6zIB$m|)$%4R253=sSIQLj
ziHSZ=;$raLTboW>t=6XhqBYy}r_JVbwwo_!GuLrk@7h^i-+Fb>4KHU`pG!4N68IIB
zJT>?WzQ8b(IPZ+IRAy)JaI^;k#-Jdjn6_w0Ba$flzyjVr<rQkaA!lQ*1QyW}qI$^5
zs*&PtCDNfI+M_P*&@(!u*R;Rbv-nYoU%@z1jO~mU2xGgTPn0g^)IV|#RNO99j*<5k
zqllOD=C?7UYQ-{O8F;u1n2pkT{BS9-Gq(&_2JT^i_Xi)!7#J)ys;vWsdIA6&a4UhW
zF8@HE9l*d~sSzHC(5XP3D$El@n74z_>1Yp3e5p~VlTcqqKjzDVFR~C}o*u&I8tQ=p
zTUZ7x0~H49y6*A$zjy!pzmjFEmI2Ga|HOc3>~?nBn2|YK@63(QS|9oW%EED_#@iGa
i>L^AmAH{1>CGh)f00V=iMtC6hBA{rng=OHcGVl}ERf<Xg


From 694a84666043b36c1d59857bdabbe5bec81b230a Mon Sep 17 00:00:00 2001
From: Alex Wang <yidaalex.wang@gmail.com>
Date: Sun, 20 Jan 2013 10:28:48 -0800
Subject: [PATCH 2/2] Fix null pointer exception when no component is selected

---
 .../src/versionchecker/actions/VCArtifactTable.java   |  8 ++++++--
 .../src/versionchecker/actions/VCMainWindow.java      | 11 +++++++++--
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/VersionChecker/src/versionchecker/actions/VCArtifactTable.java b/VersionChecker/src/versionchecker/actions/VCArtifactTable.java
index ad3ae73..a7b0782 100644
--- a/VersionChecker/src/versionchecker/actions/VCArtifactTable.java
+++ b/VersionChecker/src/versionchecker/actions/VCArtifactTable.java
@@ -84,11 +84,15 @@ public void mouseClicked(MouseEvent e) {
 	}
 
 	public String getSelectedID() {
-		return this.selectedAF.getId();
+		if (this.selectedAF != null)
+			return this.selectedAF.getId();
+		return null;
 	}
 
 	public String getSelectedVer() {
-		return this.selectedAF.getVersion();
+		if (this.selectedAF != null)
+			return this.selectedAF.getVersion();
+		return null;
 	}
 
 	private void addEntry(VCArtifact toAdd) {
diff --git a/VersionChecker/src/versionchecker/actions/VCMainWindow.java b/VersionChecker/src/versionchecker/actions/VCMainWindow.java
index d660cd9..cce5bdc 100644
--- a/VersionChecker/src/versionchecker/actions/VCMainWindow.java
+++ b/VersionChecker/src/versionchecker/actions/VCMainWindow.java
@@ -11,6 +11,7 @@
 import javax.swing.BoxLayout;
 import javax.swing.JButton;
 import javax.swing.JFrame;
+import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
 
@@ -120,7 +121,10 @@ public void actionPerformed(ActionEvent event) {
 		fetchButton.addActionListener(new ActionListener() {
 			public void actionPerformed(ActionEvent event) {
 				String id = tablePanel.getSelectedID();
-				VCCloneTask task = new VCCloneTask(id,null);
+				if (id != null)
+					new VCCloneTask(id,null);
+				else
+					JOptionPane.showMessageDialog(null, "No component is selected.", "VersionChecker", 1);;
 			}
 		});
 		
@@ -128,7 +132,10 @@ public void actionPerformed(ActionEvent event) {
 			public void actionPerformed(ActionEvent event) {
 				String id = tablePanel.getSelectedID();
 				String ver = tablePanel.getSelectedVer();
-				VCCloneTask task = new VCCloneTask(id,ver);
+				if (id != null)
+					new VCCloneTask(id,ver);
+				else
+					JOptionPane.showMessageDialog(null, "No component is selected.", "VersionChecker", 1);;
 			}
 		});