mirror of
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79 lines
2.7 KiB
C#
79 lines
2.7 KiB
C#
/*
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* Copyright 2018 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.Diagnostics;
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using System.Windows.Forms;
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namespace SourceGen.AppForms {
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public partial class EditAddress : Form {
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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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public EditAddress(int initialAddr, int maxAddressValue) {
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InitializeComponent();
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Address = -2;
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mMaxAddressValue = maxAddressValue;
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addressTextBox.Text = Asm65.Address.AddressToString(initialAddr, false);
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}
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private void EditAddress_Load(object sender, EventArgs e) {
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addressTextBox.SelectAll();
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}
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/// <summary>
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/// Handles a click on the OK button by setting the Address property to the
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/// decoded value from the text field.
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/// </summary>
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private void okButton_Click(object sender, EventArgs e) {
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if (addressTextBox.Text.Length == 0) {
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Address = -1;
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} else {
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Asm65.Address.ParseAddress(addressTextBox.Text, mMaxAddressValue, out int addr);
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Address = addr;
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}
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}
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/// <summary>
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/// Updates the OK button whenever the text changes. This works for all change sources,
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/// including programmatic.
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/// </summary>
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private void addressTextBox_TextChanged(object sender, EventArgs e) {
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UpdateOkEnabled();
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}
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/// <summary>
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/// Enables or disables the OK button depending on whether the current input is
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/// valid. We allow valid addresses and an empty box.
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/// </summary>
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private void UpdateOkEnabled() {
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string text = addressTextBox.Text;
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okButton.Enabled = (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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