From 1685e37c020873526c0d4af1fbcf648f450185ce Mon Sep 17 00:00:00 2001
From: Andy McFadden <fadden@fadden.com>
Date: Sun, 7 Jul 2019 14:28:35 -0700
Subject: [PATCH] Implement "go to" feature

---
 SourceGenWPF/MainController.cs         |   8 ++
 SourceGenWPF/SourceGenWPF.csproj       |   7 +
 SourceGenWPF/WpfGui/GotoBox.xaml       |  68 ++++++++++
 SourceGenWPF/WpfGui/GotoBox.xaml.cs    | 173 +++++++++++++++++++++++++
 SourceGenWPF/WpfGui/MainWindow.xaml    |  13 +-
 SourceGenWPF/WpfGui/MainWindow.xaml.cs |   4 +
 6 files changed, 270 insertions(+), 3 deletions(-)
 create mode 100644 SourceGenWPF/WpfGui/GotoBox.xaml
 create mode 100644 SourceGenWPF/WpfGui/GotoBox.xaml.cs

diff --git a/SourceGenWPF/MainController.cs b/SourceGenWPF/MainController.cs
index cd34d00..d59accd 100644
--- a/SourceGenWPF/MainController.cs
+++ b/SourceGenWPF/MainController.cs
@@ -1506,6 +1506,14 @@ namespace SourceGenWPF {
             mMainWin.CodeListView_Focus();
         }
 
+        public void Goto() {
+            GotoBox dlg = new GotoBox(mMainWin, mProject, mOutputFormatter);
+            if (dlg.ShowDialog() == true) {
+                GoToOffset(dlg.TargetOffset, false, true);
+                mMainWin.CodeListView_Focus();
+            }
+        }
+
         /// <summary>
         /// Moves the view and selection to the specified offset.  We want to select stuff
         /// differently if we're jumping to a note vs. jumping to an instruction.
diff --git a/SourceGenWPF/SourceGenWPF.csproj b/SourceGenWPF/SourceGenWPF.csproj
index 272f840..d85b673 100644
--- a/SourceGenWPF/SourceGenWPF.csproj
+++ b/SourceGenWPF/SourceGenWPF.csproj
@@ -99,6 +99,9 @@
     <Compile Include="WpfGui\FontPicker.xaml.cs">
       <DependentUpon>FontPicker.xaml</DependentUpon>
     </Compile>
+    <Compile Include="WpfGui\GotoBox.xaml.cs">
+      <DependentUpon>GotoBox.xaml</DependentUpon>
+    </Compile>
     <Compile Include="WpfGui\WorkProgress.xaml.cs">
       <DependentUpon>WorkProgress.xaml</DependentUpon>
     </Compile>
@@ -222,6 +225,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="WpfGui\GotoBox.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="WpfGui\WorkProgress.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
diff --git a/SourceGenWPF/WpfGui/GotoBox.xaml b/SourceGenWPF/WpfGui/GotoBox.xaml
new file mode 100644
index 0000000..64eab2e
--- /dev/null
+++ b/SourceGenWPF/WpfGui/GotoBox.xaml
@@ -0,0 +1,68 @@
+<!--
+Copyright 2019 faddenSoft
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<Window x:Class="SourceGenWPF.WpfGui.GotoBox"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:SourceGenWPF.WpfGui"
+        mc:Ignorable="d"
+        Title="Go To..."
+        SizeToContent="WidthAndHeight" ResizeMode="NoResize"
+        ShowInTaskbar="False" WindowStartupLocation="CenterOwner"
+        Loaded="Window_Loaded"
+        PreviewKeyDown="Window_KeyEventHandler">
+    <StackPanel Margin="8">
+        <TextBlock Text="Enter target location as one of:"/>
+        <TextBlock Text=" • Hex file offset (with '+', e.g. +5AB)"/>
+        <TextBlock Text=" • Hex address (e.g. 1000, $1000, 00/1000)"/>
+        <TextBlock Text=" • Label (case-sensitive)"/>
+
+        <StackPanel Orientation="Horizontal" Margin="0,12,0,0">
+            <TextBox Name="targetTextBox" Width="200" TextChanged="TargetTextBox_TextChanged"/>
+            <Button Content="Go" Width="70" Margin="8,0,0,0" IsDefault="True"
+                    IsEnabled="{Binding IsValid}" Click="GoButton_Click"/>
+        </StackPanel>
+
+        <Grid Margin="0,12,0,0">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+            </Grid.ColumnDefinitions>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+
+            <TextBlock Grid.Column="0" Grid.Row="0" Text="Offset:"/>
+            <TextBlock Grid.Column="1" Grid.Row="0"
+                       Margin="0,2,0,0" FontFamily="{StaticResource GeneralMonoFont}"
+                       Text="{Binding OffsetValueStr, FallbackValue=+1234}"/>
+
+            <TextBlock Grid.Column="0" Grid.Row="1" Text="Address:" Margin="0,0,8,0"/>
+            <TextBlock Grid.Column="1" Grid.Row="1"
+                       Margin="0,2,0,0" FontFamily="{StaticResource GeneralMonoFont}"
+                       Text="{Binding AddressValueStr, FallbackValue=01/2345}"/>
+
+            <TextBlock Grid.Column="0" Grid.Row="2" Text="Label:"/>
+            <TextBlock Grid.Column="1" Grid.Row="2"
+                       Margin="0,2,0,0" FontFamily="{StaticResource GeneralMonoFont}"
+                       Text="{Binding LabelValueStr, FallbackValue=FUBAR}"/>
+        </Grid>
+    </StackPanel>
+</Window>
diff --git a/SourceGenWPF/WpfGui/GotoBox.xaml.cs b/SourceGenWPF/WpfGui/GotoBox.xaml.cs
new file mode 100644
index 0000000..d76fa7f
--- /dev/null
+++ b/SourceGenWPF/WpfGui/GotoBox.xaml.cs
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2019 faddenSoft
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+using System;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+using Asm65;
+
+namespace SourceGenWPF.WpfGui {
+    /// <summary>
+    /// Go to line dialog.
+    /// </summary>
+    public partial class GotoBox : Window, INotifyPropertyChanged {
+        /// <summary>
+        /// On success, this will hold the target offset.
+        /// </summary>
+        public int TargetOffset { get; private set; }
+
+        /// <summary>
+        /// Reference to project.
+        /// </summary>
+        private DisasmProject mProject;
+
+        /// <summary>
+        /// Reference to formatter.  This determines how values are displayed.
+        /// </summary>
+        private Formatter mFormatter;
+
+        /// <summary>
+        /// Set to true when input is valid.  Controls whether the "Go" button is enabled.
+        /// </summary>
+        public bool IsValid {
+            get { return mIsValid; }
+            set {
+                mIsValid = value;
+                OnPropertyChanged();
+            }
+        }
+        private bool mIsValid;
+
+        public string OffsetValueStr {
+            get { return mOffsetValueStr; }
+            set {
+                mOffsetValueStr = value;
+                OnPropertyChanged();
+            }
+        }
+        private string mOffsetValueStr;
+
+        public string AddressValueStr {
+            get { return mAddressValueStr; }
+            set {
+                mAddressValueStr = value;
+                OnPropertyChanged();
+            }
+        }
+        private string mAddressValueStr;
+
+        public string LabelValueStr {
+            get { return mLabelValueStr; }
+            set {
+                mLabelValueStr = value;
+                OnPropertyChanged();
+            }
+        }
+        private string mLabelValueStr;
+
+        // INotifyPropertyChanged implementation
+        public event PropertyChangedEventHandler PropertyChanged;
+        private void OnPropertyChanged([CallerMemberName] string propertyName = "") {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+
+        public GotoBox(Window owner, DisasmProject proj, Formatter formatter) {
+            InitializeComponent();
+            Owner = owner;
+            DataContext = this;
+
+            mProject = proj;
+            mFormatter = formatter;
+            TargetOffset = -1;
+        }
+
+        private void Window_Loaded(object sender, RoutedEventArgs e) {
+            UpdateDisplay();
+            targetTextBox.Focus();
+        }
+
+        // Catch ESC key.
+        private void Window_KeyEventHandler(object sender, KeyEventArgs e) {
+            if (e.Key == Key.Escape) {
+                DialogResult = false;
+            }
+        }
+
+        private void GoButton_Click(object sender, RoutedEventArgs e) {
+            DialogResult = true;
+        }
+
+        private void TargetTextBox_TextChanged(object sender, TextChangedEventArgs e) {
+            ProcessInput();
+            UpdateDisplay();
+            IsValid = (TargetOffset >= 0);
+        }
+
+        private void ProcessInput() {
+            TargetOffset = -1;
+
+            string input = targetTextBox.Text.Trim();
+            if (string.IsNullOrEmpty(input)) {
+                return;
+            }
+            if (input[0] == '+') {
+                // this can only be an offset; convert as hexadecimal number
+                try {
+                    TargetOffset = Convert.ToInt32(input.Substring(1), 16);
+                } catch (Exception) {
+                }
+                return;
+            }
+
+            // Try it as a label.  If they give the label a hex name (e.g. "A001") they
+            // can prefix it with '$' to disambiguate the address.
+            int labelOffset = mProject.FindLabelOffsetByName(input);
+            if (labelOffset >= 0) {
+                TargetOffset = labelOffset;
+            } else if (Address.ParseAddress(input, 1 << 24, out int addr)) {
+                // could be a valid address; check against address map
+                int offset = mProject.AddrMap.AddressToOffset(0, addr);
+                if (offset >= 0) {
+                    TargetOffset = offset;
+                }
+            }
+        }
+
+        private void UpdateDisplay() {
+            string offsetStr = string.Empty;
+            string addressStr = string.Empty;
+            string labelStr = string.Empty;
+
+            if (TargetOffset >= 0) {
+                offsetStr = mFormatter.FormatOffset24(TargetOffset);
+                int addr = mProject.GetAnattrib(TargetOffset).Address;
+                addressStr = mFormatter.FormatAddress(addr, addr > 0xffff);
+                Symbol sym = mProject.GetAnattrib(TargetOffset).Symbol;
+                if (sym != null) {
+                    labelStr = sym.Label;
+                }
+            }
+
+            OffsetValueStr = offsetStr;
+            AddressValueStr = addressStr;
+            LabelValueStr = labelStr;
+        }
+    }
+}
diff --git a/SourceGenWPF/WpfGui/MainWindow.xaml b/SourceGenWPF/WpfGui/MainWindow.xaml
index 356a767..6bf1eac 100644
--- a/SourceGenWPF/WpfGui/MainWindow.xaml
+++ b/SourceGenWPF/WpfGui/MainWindow.xaml
@@ -69,6 +69,11 @@ limitations under the License.
                     <KeyGesture>F3</KeyGesture>
                 </RoutedUICommand.InputGestures>
             </RoutedUICommand>
+            <RoutedUICommand x:Key="GotoCmd" Text="Go To...">
+                <RoutedUICommand.InputGestures>
+                    <KeyGesture>Ctrl+G</KeyGesture>
+                </RoutedUICommand.InputGestures>
+            </RoutedUICommand>
             <RoutedUICommand x:Key="HintAsCodeEntryPointCmd" Text="Hint As Code Entry Point"/>
             <RoutedUICommand x:Key="HintAsDataStartCmd" Text="Hint As Data Start"/>
             <RoutedUICommand x:Key="HintAsInlineDataCmd" Text="Hint As Inline Data"/>
@@ -133,6 +138,8 @@ limitations under the License.
                         CanExecute="IsProjectOpen" Executed="FindCmd_Executed"/>
         <CommandBinding Command="{StaticResource FindNextCmd}"
                         CanExecute="IsProjectOpen" Executed="FindNextCmd_Executed"/>
+        <CommandBinding Command="{StaticResource GotoCmd}"
+                        CanExecute="IsProjectOpen" Executed="GotoCmd_Executed"/>
         <CommandBinding Command="Help"
                         Executed="HelpCmd_Executed"/>
         <CommandBinding Command="{StaticResource HintAsCodeEntryPointCmd}"
@@ -193,9 +200,9 @@ limitations under the License.
                 <MenuItem Command="Copy"/>
                 <Separator/>
                 <MenuItem Command="{StaticResource SelectAllCmd}"/>
-                <MenuItem Command="Find"/> <!-- Ctrl+F -->
-                <MenuItem Header="Find Next"/> <!-- F3 -->
-                <MenuItem Header="Go To..."/> <!-- Ctrl+G -->
+                <MenuItem Command="Find"/>
+                <MenuItem Command="{StaticResource FindNextCmd}"/>
+                <MenuItem Command="{StaticResource GotoCmd}"/>
                 <Separator/>
                 <MenuItem Header="Edit Header Comment..."/>
                 <MenuItem Command="Properties" Header="Project Properties..."/>
diff --git a/SourceGenWPF/WpfGui/MainWindow.xaml.cs b/SourceGenWPF/WpfGui/MainWindow.xaml.cs
index c95e4de..dd65532 100644
--- a/SourceGenWPF/WpfGui/MainWindow.xaml.cs
+++ b/SourceGenWPF/WpfGui/MainWindow.xaml.cs
@@ -864,6 +864,10 @@ namespace SourceGenWPF.WpfGui {
             mMainCtrl.FindNext();
         }
 
+        private void GotoCmd_Executed(object sender, ExecutedRoutedEventArgs e) {
+            mMainCtrl.Goto();
+        }
+
         private void HelpCmd_Executed(object sender, ExecutedRoutedEventArgs e) {
             mMainCtrl.ShowHelp();
         }