updated transaction interface

src/main/java/tech/iBeans/POSware/Lite/OnTransact.form

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 
-<Form version="1.3" maxVersion="1.9" type="org.netbeans.modules.form.forminfo.JFrameFormInfo">
+<Form version="1.5" maxVersion="1.9" type="org.netbeans.modules.form.forminfo.JFrameFormInfo">
   <Properties>
     <Property name="defaultCloseOperation" type="int" value="0"/>
     <Property name="title" type="java.lang.String" value="POSware Lite: Transaction"/>
@@ -39,7 +39,7 @@
 
       <Layout class="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout"/>
       <SubComponents>
-        <Component class="javax.swing.JComboBox" name="jComboBox1">
+        <Component class="javax.swing.JComboBox" name="jComboBox_Payment">
           <Properties>
             <Property name="model" type="javax.swing.ComboBoxModel" editor="org.netbeans.modules.form.editors2.ComboBoxModelEditor">
               <StringArray count="4">
@@ -59,10 +59,27 @@
             </Constraint>
           </Constraints>
         </Component>
-        <Component class="javax.swing.JLabel" name="jLabel1">
+        <Component class="javax.swing.JLabel" name="jLabel_Status">
           <Properties>
-            <Property name="text" type="java.lang.String" value="jLabel1"/>
+            <Property name="horizontalAlignment" type="int" value="0"/>
+            <Property name="text" type="java.lang.String" value="Store"/>
           </Properties>
+          <Constraints>
+            <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
+              <BorderConstraints direction="Center"/>
+            </Constraint>
+          </Constraints>
+        </Component>
+        <Component class="javax.swing.JToggleButton" name="jToggleButton_Discard">
+          <Properties>
+            <Property name="text" type="java.lang.String" value="Discard"/>
+          </Properties>
+          <Events>
+            <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="jToggleButton_DiscardActionPerformed"/>
+          </Events>
+          <AuxValues>
+            <AuxValue name="JavaCodeGenerator_AddingCodePost" type="java.lang.String" value="jToggleButton_Discard.setVisible(interface_adjust_clear());"/>
+          </AuxValues>
           <Constraints>
             <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
               <BorderConstraints direction="Before"/>
@@ -129,7 +146,7 @@
                   <SubComponents>
                     <Component class="javax.swing.JLabel" name="jLabel_price_VAT">
                       <Properties>
-                        <Property name="text" type="java.lang.String" value="VAT"/>
+                        <Property name="text" type="java.lang.String" value="Tax"/>
                       </Properties>
                       <Constraints>
                         <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
@@ -168,6 +185,14 @@
                       </Constraints>
                     </Component>
                     <Component class="javax.swing.JSpinner" name="jSpinner_price_tip_value">
+                      <Properties>
+                        <Property name="model" type="javax.swing.SpinnerModel" editor="org.netbeans.modules.form.RADConnectionPropertyEditor">
+                          <Connection code="model_price" type="code"/>
+                        </Property>
+                      </Properties>
+                      <AuxValues>
+                        <AuxValue name="JavaCodeGenerator_AddingCodePost" type="java.lang.String" value="jSpinner_price_tip_value.addChangeListener(new ChangeListener() {&#xa;    public void stateChanged(ChangeEvent e) {&#xa;        cart_tip_add();&#xa;    }&#xa;});"/>
+                      </AuxValues>
                       <Constraints>
                         <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
                           <GridBagConstraints gridX="1" gridY="1" gridWidth="1" gridHeight="1" fill="2" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
@@ -177,7 +202,7 @@
                     <Component class="javax.swing.JTextField" name="jTextField_price_VAT_value">
                       <Properties>
                         <Property name="editable" type="boolean" value="false"/>
-                        <Property name="text" type="java.lang.String" value="0"/>
+                        <Property name="horizontalAlignment" type="int" value="11"/>
                       </Properties>
                       <Constraints>
                         <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
@@ -188,6 +213,7 @@
                     <Component class="javax.swing.JTextField" name="jTextField_price_subtotal_value">
                       <Properties>
                         <Property name="editable" type="boolean" value="false"/>
+                        <Property name="horizontalAlignment" type="int" value="11"/>
                         <Property name="text" type="java.lang.String" value="0"/>
                       </Properties>
                       <Constraints>
@@ -202,8 +228,8 @@
                         <Property name="font" type="java.awt.Font" editor="org.netbeans.beaninfo.editors.FontEditor">
                           <Font name="Dialog" size="20" style="1"/>
                         </Property>
+                        <Property name="horizontalAlignment" type="int" value="11"/>
                         <Property name="text" type="java.lang.String" value="0"/>
-                        <Property name="dragEnabled" type="boolean" value="false"/>
                       </Properties>
                       <Constraints>
                         <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
@@ -211,26 +237,6 @@
                         </Constraint>
                       </Constraints>
                     </Component>
-                    <Component class="javax.swing.JComboBox" name="jComboBox_information_discount_selections">
-                      <Properties>
-                        <Property name="model" type="javax.swing.ComboBoxModel" editor="org.netbeans.modules.form.editors2.ComboBoxModelEditor">
-                          <StringArray count="4">
-                            <StringItem index="0" value="Item 1"/>
-                            <StringItem index="1" value="Item 2"/>
-                            <StringItem index="2" value="Item 3"/>
-                            <StringItem index="3" value="Item 4"/>
-                          </StringArray>
-                        </Property>
-                      </Properties>
-                      <AuxValues>
-                        <AuxValue name="JavaCodeGenerator_TypeParameters" type="java.lang.String" value="&lt;String&gt;"/>
-                      </AuxValues>
-                      <Constraints>
-                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
-                          <GridBagConstraints gridX="1" gridY="2" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="0.0" weightY="0.0"/>
-                        </Constraint>
-                      </Constraints>
-                    </Component>
                     <Component class="javax.swing.JLabel" name="jLabel2_information_discount">
                       <Properties>
                         <Property name="text" type="java.lang.String" value="Discount"/>
@@ -241,6 +247,17 @@
                         </Constraint>
                       </Constraints>
                     </Component>
+                    <Component class="javax.swing.JTextField" name="jTextField_price_discounted">
+                      <Properties>
+                        <Property name="editable" type="boolean" value="false"/>
+                        <Property name="horizontalAlignment" type="int" value="11"/>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="1" gridY="2" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
                   </SubComponents>
                 </Container>
               </SubComponents>
@@ -259,14 +276,14 @@
 
           <Layout class="org.netbeans.modules.form.compat2.layouts.DesignBoxLayout"/>
           <SubComponents>
-            <Container class="javax.swing.JPanel" name="jPanel2">
+            <Container class="javax.swing.JPanel" name="jPanel_Inventory">
 
-              <Layout class="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout"/>
+              <Layout class="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout"/>
               <SubComponents>
                 <Container class="javax.swing.JPanel" name="jPanel_Inventory_Actions">
                   <Constraints>
-                    <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
+                    <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
-                      <BorderConstraints direction="South"/>
+                      <GridBagConstraints gridX="0" gridY="2" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
                     </Constraint>
                   </Constraints>
 
@@ -289,6 +306,11 @@
                       </Constraints>
                     </Component>
                     <Component class="javax.swing.JSpinner" name="jSpinner_item_quantity">
+                      <Properties>
+                        <Property name="model" type="javax.swing.SpinnerModel" editor="org.netbeans.modules.form.RADConnectionPropertyEditor">
+                          <Connection code="model_counting" type="code"/>
+                        </Property>
+                      </Properties>
                       <Constraints>
                         <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
                           <BorderConstraints direction="Center"/>
@@ -318,8 +340,8 @@
                     <AuxValue name="autoScrollPane" type="java.lang.Boolean" value="true"/>
                   </AuxValues>
                   <Constraints>
-                    <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
+                    <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
-                      <BorderConstraints direction="Center"/>
+                      <GridBagConstraints gridX="0" gridY="0" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="1.0"/>
                     </Constraint>
                   </Constraints>
 
@@ -327,22 +349,93 @@
                   <SubComponents>
                     <Component class="javax.swing.JList" name="jList1_Inventory">
                       <Properties>
-                        <Property name="model" type="javax.swing.ListModel" editor="org.netbeans.modules.form.editors2.ListModelEditor">
+                        <Property name="model" type="javax.swing.ListModel" editor="org.netbeans.modules.form.RADConnectionPropertyEditor">
-                          <StringArray count="5">
+                          <Connection code="refresh_inventory_list()" type="code"/>
-                            <StringItem index="0" value="Item 1"/>
-                            <StringItem index="1" value="Item 2"/>
-                            <StringItem index="2" value="Item 3"/>
-                            <StringItem index="3" value="Item 4"/>
-                            <StringItem index="4" value="Item 5"/>
-                          </StringArray>
                         </Property>
                       </Properties>
+                      <Events>
+                        <EventHandler event="valueChanged" listener="javax.swing.event.ListSelectionListener" parameters="javax.swing.event.ListSelectionEvent" handler="jList1_InventoryValueChanged"/>
+                      </Events>
                       <AuxValues>
                         <AuxValue name="JavaCodeGenerator_TypeParameters" type="java.lang.String" value="&lt;String&gt;"/>
                       </AuxValues>
                     </Component>
                   </SubComponents>
                 </Container>
+                <Container class="javax.swing.JPanel" name="jPanel_ItemDetails">
+                  <Constraints>
+                    <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                      <GridBagConstraints gridX="0" gridY="1" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
+                    </Constraint>
+                  </Constraints>
+
+                  <Layout class="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout"/>
+                  <SubComponents>
+                    <Component class="javax.swing.JLabel" name="jLabel_ItemDetails_SKU">
+                      <Properties>
+                        <Property name="text" type="java.lang.String" value="SKU"/>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="0" gridY="0" gridWidth="1" gridHeight="1" fill="0" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="0.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
+                    <Component class="javax.swing.JTextField" name="jTextField_ItemDetails_SKU">
+                      <Properties>
+                        <Property name="editable" type="boolean" value="false"/>
+                        <Property name="font" type="java.awt.Font" editor="org.netbeans.beaninfo.editors.FontEditor">
+                          <Font name="Dialog" size="18" style="0"/>
+                        </Property>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="1" gridY="0" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
+                    <Component class="javax.swing.JLabel" name="jLabel_ItemDetails_UnitPrice">
+                      <Properties>
+                        <Property name="text" type="java.lang.String" value="Unit Price"/>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="0" gridY="1" gridWidth="1" gridHeight="1" fill="0" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="0.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
+                    <Component class="javax.swing.JTextField" name="jTextField_ItemDetails_UnitPrice">
+                      <Properties>
+                        <Property name="editable" type="boolean" value="false"/>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="1" gridY="1" gridWidth="1" gridHeight="1" fill="1" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
+                    <Component class="javax.swing.JLabel" name="jLabel_ItemDetails_Discount">
+                      <Properties>
+                        <Property name="text" type="java.lang.String" value="Discount"/>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="0" gridY="2" gridWidth="1" gridHeight="1" fill="0" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="0.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
+                    <Component class="javax.swing.JTextField" name="jTextField_ItemDetails_Discount">
+                      <Properties>
+                        <Property name="editable" type="boolean" value="false"/>
+                      </Properties>
+                      <Constraints>
+                        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">
+                          <GridBagConstraints gridX="1" gridY="2" gridWidth="1" gridHeight="1" fill="2" ipadX="0" ipadY="0" insetsTop="0" insetsLeft="0" insetsBottom="0" insetsRight="0" anchor="10" weightX="1.0" weightY="0.0"/>
+                        </Constraint>
+                      </Constraints>
+                    </Component>
+                  </SubComponents>
+                </Container>
               </SubComponents>
             </Container>
           </SubComponents>

src/main/java/tech/iBeans/POSware/Lite/OnTransact.java

@@ -3,8 +3,13 @@
  * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
  */
 package tech.iBeans.POSware.Lite;
+import java.util.*;
+import javax.swing.*;
+import javax.swing.event.*;
 import tech.iBeans.POSware.Lite.transaction;
+import tech.iBeans.POSware.Lite.transact;
 import tech.iBeans.POSware.Lite.WindowManagement;
+import tech.iBeans.POSware.Lite.receipt;
 
 /**
  *
@@ -16,6 +21,7 @@ public class OnTransact extends javax.swing.JFrame {
      * Creates new form OnTransact
      */
     private OnTransact() {
+        transact.init();
         initComponents();
     }
 
@@ -30,8 +36,9 @@ public class OnTransact extends javax.swing.JFrame {
         java.awt.GridBagConstraints gridBagConstraints;
 
         jPanel_statusinfo = new javax.swing.JPanel();
-        jComboBox1 = new javax.swing.JComboBox<>();
+        jComboBox_Payment = new javax.swing.JComboBox<>();
-        jLabel1 = new javax.swing.JLabel();
+        jLabel_Status = new javax.swing.JLabel();
+        jToggleButton_Discard = new javax.swing.JToggleButton();
         jPanel_Main = new javax.swing.JPanel();
         jPanel_Items = new javax.swing.JPanel();
         jScrollPane1 = new javax.swing.JScrollPane();
@@ -46,16 +53,23 @@ public class OnTransact extends javax.swing.JFrame {
         jTextField_price_VAT_value = new javax.swing.JTextField();
         jTextField_price_subtotal_value = new javax.swing.JTextField();
         jTextField_price_total_value = new javax.swing.JTextField();
-        jComboBox_information_discount_selections = new javax.swing.JComboBox<>();
         jLabel2_information_discount = new javax.swing.JLabel();
+        jTextField_price_discounted = new javax.swing.JTextField();
         jToolBar_Inventory = new javax.swing.JToolBar();
-        jPanel2 = new javax.swing.JPanel();
+        jPanel_Inventory = new javax.swing.JPanel();
         jPanel_Inventory_Actions = new javax.swing.JPanel();
         jButton_item_void = new javax.swing.JButton();
         jSpinner_item_quantity = new javax.swing.JSpinner();
         jButton_item_add = new javax.swing.JButton();
         jScrollPane_Inventory = new javax.swing.JScrollPane();
         jList1_Inventory = new javax.swing.JList<>();
+        jPanel_ItemDetails = new javax.swing.JPanel();
+        jLabel_ItemDetails_SKU = new javax.swing.JLabel();
+        jTextField_ItemDetails_SKU = new javax.swing.JTextField();
+        jLabel_ItemDetails_UnitPrice = new javax.swing.JLabel();
+        jTextField_ItemDetails_UnitPrice = new javax.swing.JTextField();
+        jLabel_ItemDetails_Discount = new javax.swing.JLabel();
+        jTextField_ItemDetails_Discount = new javax.swing.JTextField();
 
         setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
         setTitle("POSware Lite: Transaction");
@@ -68,11 +82,21 @@ public class OnTransact extends javax.swing.JFrame {
 
         jPanel_statusinfo.setLayout(new java.awt.BorderLayout());
 
-        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
+        jComboBox_Payment.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
-        jPanel_statusinfo.add(jComboBox1, java.awt.BorderLayout.EAST);
+        jPanel_statusinfo.add(jComboBox_Payment, java.awt.BorderLayout.EAST);
 
-        jLabel1.setText("jLabel1");
+        jLabel_Status.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
-        jPanel_statusinfo.add(jLabel1, java.awt.BorderLayout.LINE_START);
+        jLabel_Status.setText("Store");
+        jPanel_statusinfo.add(jLabel_Status, java.awt.BorderLayout.CENTER);
+
+        jToggleButton_Discard.setText("Discard");
+        jToggleButton_Discard.addActionListener(new java.awt.event.ActionListener() {
+            public void actionPerformed(java.awt.event.ActionEvent evt) {
+                jToggleButton_DiscardActionPerformed(evt);
+            }
+        });
+        jPanel_statusinfo.add(jToggleButton_Discard, java.awt.BorderLayout.LINE_START);
+        jToggleButton_Discard.setVisible(interface_adjust_clear());
 
         getContentPane().add(jPanel_statusinfo, java.awt.BorderLayout.PAGE_END);
 
@@ -92,7 +116,7 @@ public class OnTransact extends javax.swing.JFrame {
 
         jPanel_Information.setLayout(new java.awt.GridBagLayout());
 
-        jLabel_price_VAT.setText("VAT");
+        jLabel_price_VAT.setText("Tax");
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 0;
         gridBagConstraints.gridy = 0;
@@ -116,15 +140,22 @@ public class OnTransact extends javax.swing.JFrame {
         gridBagConstraints.gridy = 1;
         gridBagConstraints.gridheight = 2;
         jPanel_Information.add(jLabel_price_total, gridBagConstraints);
+
+        jSpinner_price_tip_value.setModel(model_price);
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 1;
         gridBagConstraints.gridy = 1;
         gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
         gridBagConstraints.weightx = 1.0;
         jPanel_Information.add(jSpinner_price_tip_value, gridBagConstraints);
+        jSpinner_price_tip_value.addChangeListener(new ChangeListener() {
+            public void stateChanged(ChangeEvent e) {
+                cart_tip_add();
+            }
+        });
 
         jTextField_price_VAT_value.setEditable(false);
-        jTextField_price_VAT_value.setText("0");
+        jTextField_price_VAT_value.setHorizontalAlignment(javax.swing.JTextField.TRAILING);
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 1;
         gridBagConstraints.gridy = 0;
@@ -133,6 +164,7 @@ public class OnTransact extends javax.swing.JFrame {
         jPanel_Information.add(jTextField_price_VAT_value, gridBagConstraints);
 
         jTextField_price_subtotal_value.setEditable(false);
+        jTextField_price_subtotal_value.setHorizontalAlignment(javax.swing.JTextField.TRAILING);
         jTextField_price_subtotal_value.setText("0");
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 3;
@@ -143,8 +175,8 @@ public class OnTransact extends javax.swing.JFrame {
 
         jTextField_price_total_value.setEditable(false);
         jTextField_price_total_value.setFont(new java.awt.Font("Dialog", 1, 20)); // NOI18N
+        jTextField_price_total_value.setHorizontalAlignment(javax.swing.JTextField.TRAILING);
         jTextField_price_total_value.setText("0");
-        jTextField_price_total_value.setDragEnabled(false);
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 3;
         gridBagConstraints.gridy = 1;
@@ -153,19 +185,21 @@ public class OnTransact extends javax.swing.JFrame {
         gridBagConstraints.weightx = 1.0;
         jPanel_Information.add(jTextField_price_total_value, gridBagConstraints);
 
-        jComboBox_information_discount_selections.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
-        gridBagConstraints = new java.awt.GridBagConstraints();
-        gridBagConstraints.gridx = 1;
-        gridBagConstraints.gridy = 2;
-        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
-        jPanel_Information.add(jComboBox_information_discount_selections, gridBagConstraints);
-
         jLabel2_information_discount.setText("Discount");
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 0;
         gridBagConstraints.gridy = 2;
         jPanel_Information.add(jLabel2_information_discount, gridBagConstraints);
 
+        jTextField_price_discounted.setEditable(false);
+        jTextField_price_discounted.setHorizontalAlignment(javax.swing.JTextField.TRAILING);
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 1;
+        gridBagConstraints.gridy = 2;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
+        gridBagConstraints.weightx = 1.0;
+        jPanel_Information.add(jTextField_price_discounted, gridBagConstraints);
+
         jToolBar_Information.add(jPanel_Information);
 
         jPanel_Items.add(jToolBar_Information, java.awt.BorderLayout.SOUTH);
@@ -174,7 +208,7 @@ public class OnTransact extends javax.swing.JFrame {
 
         jToolBar_Inventory.setRollover(true);
 
-        jPanel2.setLayout(new java.awt.BorderLayout());
+        jPanel_Inventory.setLayout(new java.awt.GridBagLayout());
 
         jPanel_Inventory_Actions.setLayout(new java.awt.BorderLayout());
 
@@ -188,6 +222,8 @@ public class OnTransact extends javax.swing.JFrame {
             }
         });
         jPanel_Inventory_Actions.add(jButton_item_void, java.awt.BorderLayout.LINE_START);
+
+        jSpinner_item_quantity.setModel(model_counting);
         jPanel_Inventory_Actions.add(jSpinner_item_quantity, java.awt.BorderLayout.CENTER);
 
         jButton_item_add.setText("Add");
@@ -201,18 +237,82 @@ public class OnTransact extends javax.swing.JFrame {
         });
         jPanel_Inventory_Actions.add(jButton_item_add, java.awt.BorderLayout.LINE_END);
 
-        jPanel2.add(jPanel_Inventory_Actions, java.awt.BorderLayout.SOUTH);
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 0;
+        gridBagConstraints.gridy = 2;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
+        gridBagConstraints.weightx = 1.0;
+        jPanel_Inventory.add(jPanel_Inventory_Actions, gridBagConstraints);
 
-        jList1_Inventory.setModel(new javax.swing.AbstractListModel<String>() {
+        jList1_Inventory.setModel(refresh_inventory_list());
-            String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
+        jList1_Inventory.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
-            public int getSize() { return strings.length; }
+            public void valueChanged(javax.swing.event.ListSelectionEvent evt) {
-            public String getElementAt(int i) { return strings[i]; }
+                jList1_InventoryValueChanged(evt);
+            }
         });
         jScrollPane_Inventory.setViewportView(jList1_Inventory);
 
-        jPanel2.add(jScrollPane_Inventory, java.awt.BorderLayout.CENTER);
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 0;
+        gridBagConstraints.gridy = 0;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
+        gridBagConstraints.weightx = 1.0;
+        gridBagConstraints.weighty = 1.0;
+        jPanel_Inventory.add(jScrollPane_Inventory, gridBagConstraints);
 
-        jToolBar_Inventory.add(jPanel2);
+        jPanel_ItemDetails.setLayout(new java.awt.GridBagLayout());
+
+        jLabel_ItemDetails_SKU.setText("SKU");
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 0;
+        gridBagConstraints.gridy = 0;
+        jPanel_ItemDetails.add(jLabel_ItemDetails_SKU, gridBagConstraints);
+
+        jTextField_ItemDetails_SKU.setEditable(false);
+        jTextField_ItemDetails_SKU.setFont(new java.awt.Font("Dialog", 0, 18)); // NOI18N
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 1;
+        gridBagConstraints.gridy = 0;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
+        gridBagConstraints.weightx = 1.0;
+        jPanel_ItemDetails.add(jTextField_ItemDetails_SKU, gridBagConstraints);
+
+        jLabel_ItemDetails_UnitPrice.setText("Unit Price");
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 0;
+        gridBagConstraints.gridy = 1;
+        jPanel_ItemDetails.add(jLabel_ItemDetails_UnitPrice, gridBagConstraints);
+
+        jTextField_ItemDetails_UnitPrice.setEditable(false);
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 1;
+        gridBagConstraints.gridy = 1;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
+        gridBagConstraints.weightx = 1.0;
+        jPanel_ItemDetails.add(jTextField_ItemDetails_UnitPrice, gridBagConstraints);
+
+        jLabel_ItemDetails_Discount.setText("Discount");
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 0;
+        gridBagConstraints.gridy = 2;
+        jPanel_ItemDetails.add(jLabel_ItemDetails_Discount, gridBagConstraints);
+
+        jTextField_ItemDetails_Discount.setEditable(false);
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 1;
+        gridBagConstraints.gridy = 2;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
+        gridBagConstraints.weightx = 1.0;
+        jPanel_ItemDetails.add(jTextField_ItemDetails_Discount, gridBagConstraints);
+
+        gridBagConstraints = new java.awt.GridBagConstraints();
+        gridBagConstraints.gridx = 0;
+        gridBagConstraints.gridy = 1;
+        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
+        gridBagConstraints.weightx = 1.0;
+        jPanel_Inventory.add(jPanel_ItemDetails, gridBagConstraints);
+
+        jToolBar_Inventory.add(jPanel_Inventory);
 
         jPanel_Main.add(jToolBar_Inventory, java.awt.BorderLayout.EAST);
 
@@ -222,17 +322,17 @@ public class OnTransact extends javax.swing.JFrame {
     }// </editor-fold>//GEN-END:initComponents
 
     private void jButton_item_voidActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton_item_voidActionPerformed
-        // TODO add your handling code here:
+        cart_remove();
     }//GEN-LAST:event_jButton_item_voidActionPerformed
 
     private void jButton_item_addActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton_item_addActionPerformed
-        // TODO add your handling code here:
+        cart_add();
     }//GEN-LAST:event_jButton_item_addActionPerformed
 
     private void transaction_check(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_transaction_check
         boolean CLOSING_STATE = false; 
         
-        if (transaction.items_count.size() <= 0) {
+        if (transact.items.size() <= 0) {
             CLOSING_STATE = true;
         } else {
             CLOSING_STATE = confirm_discard();
@@ -241,6 +341,15 @@ public class OnTransact extends javax.swing.JFrame {
         if (CLOSING_STATE) {evt.getWindow().dispose();};
     }//GEN-LAST:event_transaction_check
 
+    private void jList1_InventoryValueChanged(javax.swing.event.ListSelectionEvent evt) {//GEN-FIRST:event_jList1_InventoryValueChanged
+        // TODO add your handling code here:
+        product_information_refresh();
+    }//GEN-LAST:event_jList1_InventoryValueChanged
+
+    private void jToggleButton_DiscardActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jToggleButton_DiscardActionPerformed
+        init();
+    }//GEN-LAST:event_jToggleButton_DiscardActionPerformed
+
     /**
      * @param args the command line arguments
      */
@@ -282,6 +391,9 @@ public class OnTransact extends javax.swing.JFrame {
         display();
     }
     
+    private SpinnerNumberModel model_price = new SpinnerNumberModel(0, 0, Integer.MAX_VALUE, .01);
+    private SpinnerNumberModel model_counting = new SpinnerNumberModel(1, 1, Integer.MAX_VALUE, 1);
+    
     private static boolean confirm_discard() {
         /* Confirm discarding items. 
         
@@ -293,21 +405,169 @@ public class OnTransact extends javax.swing.JFrame {
         return (USER_CHOICE);
     };
     
+    private boolean interface_adjust_clear() {
+        /* Adjust the ability to reset. 
+        
+        Returns: (boolean) the new state of the appearance
+        */
+        
+        boolean CLEARABLE_STATE = (transact.items.size() > 0); 
+        jToggleButton_Discard.setVisible(CLEARABLE_STATE);
+        return (jToggleButton_Discard.isVisible());
+    };
+    
+    private AbstractListModel<String> refresh_inventory_list() {
+        /* Pull the list from inventory. 
+        */
+        
+        AbstractListModel<String> INVENTORY_LIST = new javax.swing.AbstractListModel<String>() {
+            String[] strings = ((ArrayList<String>)inventory.collate()).toArray(new String[0]);
+            public int getSize() { return strings.length; }
+            public String getElementAt(int i) { return strings[i]; }
+        };
+        
+        return(INVENTORY_LIST);
+    };
+    
+    private void cart_calculation_refresh() {
+        /* Refresh the cart's details, such as the total cost. */
+        Dictionary<String, String> prices = transact.calculate(); 
+        
+        // TODO fix text formatting. Perhaps to be done in a different function, not here.  
+        
+        jTextField_price_subtotal_value.setText(String.valueOf(prices.get("subtotal")));
+        jTextField_price_total_value.setText(String.valueOf(prices.get("total")));
+        jTextField_price_discounted.setText(String.valueOf(prices.get("discount")));
+        jTextField_price_VAT_value.setText(String.valueOf(prices.get("tax")));
+        
+        interface_adjust_clear();
+    };
+    
+    private boolean product_information_refresh() {
+        /* Refresh the select product information's details. */
+        Integer ITEM_SELECTED = jList1_Inventory.getSelectedIndex();
+        
+        if (ITEM_SELECTED == null) {return false;};
+        
+        Dictionary<String, String> ITEM_SELECTED_DETAILS_PROCESSED = new Hashtable<>();
+        
+        // Get the selected details. 
+        Dictionary ITEM_SELECTED_DETAILS = inventory.find(ITEM_SELECTED);
+        if (ITEM_SELECTED_DETAILS == null) {return (false);};
+        ITEM_SELECTED_DETAILS_PROCESSED.put("SKU", inventory.list().get(ITEM_SELECTED).toString());
+        
+        // Get the unit price. 
+        ITEM_SELECTED_DETAILS_PROCESSED.put("Unit Price", String.valueOf(ITEM_SELECTED_DETAILS.get("Price")));
+        
+        // Get the discount. 
+        if (ITEM_SELECTED_DETAILS.get("Discount") != null) {
+            if ((int) ITEM_SELECTED_DETAILS.get("Discount") != 0) {
+                ITEM_SELECTED_DETAILS_PROCESSED.put("Discount", (String.valueOf((int) ITEM_SELECTED_DETAILS.get("Discount"))).concat("%"));
+            };
+        } else {
+            ITEM_SELECTED_DETAILS_PROCESSED.put("Discount","");
+        };
+        
+        // Place the corresponding information. 
+        jTextField_ItemDetails_SKU.setText(ITEM_SELECTED_DETAILS_PROCESSED.get("SKU"));
+        jTextField_ItemDetails_UnitPrice.setText(ITEM_SELECTED_DETAILS_PROCESSED.get("Unit Price"));
+        jTextField_ItemDetails_Discount.setText(ITEM_SELECTED_DETAILS_PROCESSED.get("Discount"));
+        return (true);
+    };
+     
+    private void cart_tip_add() {
+        /* Add a tip. */
+        
+        transact.price.put("tip", (double) jSpinner_price_tip_value.getValue());
+        transact.calculate();
+        cart_calculation_refresh();
+    };
+    
+    private boolean cart_add() {
+        /* Add the item to the cart. 
+        
+        Returns: (boolean) whether the item had been successfully added to the cart or not
+        */
+        boolean state = false; 
+        
+        int ITEM_SELECTED = jList1_Inventory.getSelectedIndex();
+        int ITEM_SELECTED_QUANTITY = (int) jSpinner_item_quantity.getValue();
+        
+        if (ITEM_SELECTED >= 0) {
+            // Get the selected details. 
+            Dictionary ITEM_SELECTED_DETAILS = inventory.find(ITEM_SELECTED);
+            if (ITEM_SELECTED_DETAILS == null) {return (false);};
+            String ITEM_SELECTED_SKU = inventory.list().get(ITEM_SELECTED).toString();
+
+            // Add to cart. 
+            state = transact.add(ITEM_SELECTED_SKU, ITEM_SELECTED_QUANTITY);
+
+            // Refresh the data. 
+            cart_calculation_refresh();
+        };
+        return(state);
+    };
+    
+    private boolean cart_remove() {
+        /* Remove the item to the cart. 
+        
+        Returns: (boolean) whether the item had been successfully removed from the cart or not
+        */
+        boolean state = false; 
+        
+        int ITEM_SELECTED = jList1_Inventory.getSelectedIndex();
+        int ITEM_SELECTED_QUANTITY = (int) jSpinner_item_quantity.getValue();
+        
+        if (ITEM_SELECTED >= 0) {
+            // Get the selected details. 
+            Dictionary ITEM_SELECTED_DETAILS = inventory.find(ITEM_SELECTED);
+            if (ITEM_SELECTED_DETAILS == null) {return (false);};
+            String ITEM_SELECTED_SKU = inventory.list().get(ITEM_SELECTED).toString();
+
+            // Add to cart. 
+            state = transact.remove(ITEM_SELECTED_SKU, ITEM_SELECTED_QUANTITY);
+
+            // Refresh the data. 
+            cart_calculation_refresh();
+        };
+        return(state);
+    };
+    
+    private void init() {
+        Boolean DISCARD_STATE = confirm_discard();
+        if (DISCARD_STATE) {
+            transact.init();
+            refresh_inventory_list();
+            cart_calculation_refresh();
+            receipt.init();
+            receipt.headers();
+            receipt_refresh();
+        };
+    };
+    
+    
+    private void receipt_refresh() {
+        jTextArea1.setText(receipt.content);
+    };
+
     // Variables declaration - do not modify//GEN-BEGIN:variables
     private javax.swing.JButton jButton_item_add;
     private javax.swing.JButton jButton_item_void;
-    private javax.swing.JComboBox<String> jComboBox1;
+    private javax.swing.JComboBox<String> jComboBox_Payment;
-    private javax.swing.JComboBox<String> jComboBox_information_discount_selections;
-    private javax.swing.JLabel jLabel1;
     private javax.swing.JLabel jLabel2_information_discount;
+    private javax.swing.JLabel jLabel_ItemDetails_Discount;
+    private javax.swing.JLabel jLabel_ItemDetails_SKU;
+    private javax.swing.JLabel jLabel_ItemDetails_UnitPrice;
+    private javax.swing.JLabel jLabel_Status;
     private javax.swing.JLabel jLabel_price_VAT;
     private javax.swing.JLabel jLabel_price_subtotal;
     private javax.swing.JLabel jLabel_price_tip;
     private javax.swing.JLabel jLabel_price_total;
     private javax.swing.JList<String> jList1_Inventory;
-    private javax.swing.JPanel jPanel2;
     private javax.swing.JPanel jPanel_Information;
+    private javax.swing.JPanel jPanel_Inventory;
     private javax.swing.JPanel jPanel_Inventory_Actions;
+    private javax.swing.JPanel jPanel_ItemDetails;
     private javax.swing.JPanel jPanel_Items;
     private javax.swing.JPanel jPanel_Main;
     private javax.swing.JPanel jPanel_statusinfo;
@@ -316,9 +576,14 @@ public class OnTransact extends javax.swing.JFrame {
     private javax.swing.JSpinner jSpinner_item_quantity;
     private javax.swing.JSpinner jSpinner_price_tip_value;
     private javax.swing.JTextArea jTextArea1;
+    private javax.swing.JTextField jTextField_ItemDetails_Discount;
+    private javax.swing.JTextField jTextField_ItemDetails_SKU;
+    private javax.swing.JTextField jTextField_ItemDetails_UnitPrice;
     private javax.swing.JTextField jTextField_price_VAT_value;
+    private javax.swing.JTextField jTextField_price_discounted;
     private javax.swing.JTextField jTextField_price_subtotal_value;
     private javax.swing.JTextField jTextField_price_total_value;
+    private javax.swing.JToggleButton jToggleButton_Discard;
     private javax.swing.JToolBar jToolBar_Information;
     private javax.swing.JToolBar jToolBar_Inventory;
     // End of variables declaration//GEN-END:variables