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Sometimes code relocates a few bits of itself but not others. We don't currently have a way to say, "go back to where we would have been". As a cheap alternative, we now show the "load address", i.e. where we'd be if there were no address map entries after the first.
158 lines
5.5 KiB
C#
158 lines
5.5 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Runtime.CompilerServices;
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using System.Windows;
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using System.Windows.Controls;
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using Asm65;
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namespace SourceGen.WpfGui {
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/// <summary>
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/// Edit Address dialog.
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/// </summary>
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public partial class EditAddress : Window, INotifyPropertyChanged {
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/// <summary>
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/// Address typed by user. Only valid after the dialog returns OK. Will be set to -1
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/// if the user is attempting to delete the address.
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/// </summary>
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public int Address { get; private set; }
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/// <summary>
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/// Maximum allowed address value.
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/// </summary>
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private int mMaxAddressValue;
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/// <summary>
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/// What the address would be if there were no addresses set after the initial one.
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/// </summary>
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private int mBaseAddr;
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/// <summary>
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/// Text formatter.
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/// </summary>
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private Formatter mFormatter;
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/// <summary>
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/// Bound two-way property.
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/// </summary>
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public string AddressText { get; set; }
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/// <summary>
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/// Set to true when input is valid. Controls whether the OK button is enabled.
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/// </summary>
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public bool IsValid {
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get { return mIsValid; }
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set { mIsValid = value; OnPropertyChanged(); }
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}
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private bool mIsValid;
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public Visibility LoadAddressVis {
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get { return mLoadAddressVis; }
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set { mLoadAddressVis = value; OnPropertyChanged(); }
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}
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public Visibility mLoadAddressVis = Visibility.Collapsed;
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public string LoadAddressText {
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get { return mLoadAddressText; }
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set { mLoadAddressText = value; OnPropertyChanged(); }
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}
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public string mLoadAddressText = string.Empty;
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// INotifyPropertyChanged implementation
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public event PropertyChangedEventHandler PropertyChanged;
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private void OnPropertyChanged([CallerMemberName] string propertyName = "") {
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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public EditAddress(Window owner, int initialAddr, int loadAddr, int maxAddressValue,
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Formatter formatter) {
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// Set the property before initializing the window -- we don't have a property
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// change notifier.
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Address = -2;
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mMaxAddressValue = maxAddressValue;
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mBaseAddr = loadAddr;
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mFormatter = formatter;
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AddressText = Asm65.Address.AddressToString(initialAddr, false);
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if (initialAddr != loadAddr) {
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LoadAddressVis = Visibility.Visible;
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LoadAddressText = mFormatter.FormatAddress(loadAddr, loadAddr > 0xffff);
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}
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InitializeComponent();
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Owner = owner;
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DataContext = this;
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}
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private void Window_ContentRendered(object sender, EventArgs e) {
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addrTextBox.SelectAll();
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addrTextBox.Focus();
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}
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private void OkButton_Click(object sender, RoutedEventArgs e) {
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if (AddressText.Length == 0) {
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Address = -1;
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} else {
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Asm65.Address.ParseAddress(AddressText, mMaxAddressValue, out int addr);
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Address = addr;
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}
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DialogResult = true;
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}
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/// <summary>
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/// Handles a TextChanged event on the address text box.
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/// </summary>
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/// <remarks>
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/// Must have UpdateSourceTrigger=PropertyChanged set for this to work. The default
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/// for TextBox is LostFocus.
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/// </remarks>
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private void TextBox_TextChanged(object sender, TextChangedEventArgs e) {
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if (IsLoaded) {
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string text = AddressText;
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IsValid = (text.Length == 0) ||
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Asm65.Address.ParseAddress(text, mMaxAddressValue, out int unused);
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}
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}
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}
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// This might be better with validation rules, but it's sort of awkward to pass parameters
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// (like MaxAddressValue) in.
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// https://social.technet.microsoft.com/wiki/contents/articles/31422.wpf-passing-a-data-bound-value-to-a-validation-rule.aspx
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//
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// Speaking of awkward, updating the OK button's IsEnable value through validation
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// requires MultiDataTrigger.
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//public class AddressValidationRule : ValidationRule {
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// public int MaxAddress { get; set; }
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// public override ValidationResult Validate(object value, CultureInfo cultureInfo) {
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// string text = value.ToString();
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// Debug.WriteLine("VALIDATE " + text);
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// if ((text.Length == 0) ||
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// Asm65.Address.ParseAddress(text, MaxAddress, out int unused)) {
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// return new ValidationResult(true, null);
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// } else {
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// return new ValidationResult(false, "Invalid address");
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// }
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// }
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//}
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} |