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6502bench/SourceGenWF/AsmGen/GeneratorProgress.cs
2019-07-20 13:02:54 -07:00

125 lines
4.8 KiB
C#

/*
* Copyright 2018 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.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows.Forms;
namespace SourceGenWF.AsmGen {
/// <summary>
/// Dialog that shows the progress of the assembler, and allows cancellation.
/// </summary>
public partial class GeneratorProgress : Form {
/// <summary>
/// Full pathnames of generated files. Will be null on error or user cancelation.
/// </summary>
public List<string> Results { get; private set; }
private IGenerator mGenerator;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="gen">Fully-configured source generator.</param>
public GeneratorProgress(IGenerator gen) {
InitializeComponent();
mGenerator = gen;
}
private void GeneratorProgress_Load(object sender, EventArgs e) {
backgroundWorker1.RunWorkerAsync();
}
private void cancelButton_Click(object sender, EventArgs e) {
backgroundWorker1.CancelAsync();
cancelButton.Enabled = false;
}
private void GeneratorProgress_FormClosing(object sender, FormClosingEventArgs e) {
// The close button will close the dialog without canceling the event. We
// cancel it here, which should cause it to stop relatively quickly, but we don't
// wait for it on the off chance that something weird is going on and it got
// stuck. If nothing else, this gives the user a chance to save their work.
if (backgroundWorker1.IsBusy) {
backgroundWorker1.CancelAsync();
DialogResult = DialogResult.Cancel;
}
}
// NOTE: executes on work thread. DO NOT do any UI work here. DO NOT access
// the Results property directly.
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) {
BackgroundWorker worker = sender as BackgroundWorker;
// This will throw an I/O exception if there's a problem with the file. This
// will be caught and transferred to RunWorkerCompleted.
List<string> fileNames = mGenerator.GenerateSource(worker);
if (worker.CancellationPending) {
e.Cancel = true;
} else {
e.Result = fileNames;
}
}
// Callback that fires when a progress update is made.
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) {
int percent = e.ProgressPercentage;
string msg = e.UserState as string;
Debug.Assert(percent >= 0 && percent <= 100);
if (!string.IsNullOrEmpty(msg)) {
progressLabel.Text = msg;
}
progressBar1.Value = percent;
}
// Callback that fires when execution completes.
private void backgroundWorker1_RunWorkerCompleted(object sender,
RunWorkerCompletedEventArgs e) {
if (e.Cancelled) {
Debug.WriteLine("CANCELED");
DialogResult = DialogResult.Cancel;
} else if (e.Error != null) {
// This should only happen on a file I/O error, e.g. out of disk space or
// unable to overwrite an existing file.
MessageBox.Show(this, e.Error.ToString(), Properties.Resources.OPERATION_FAILED,
MessageBoxButtons.OK, MessageBoxIcon.Error);
DialogResult = DialogResult.Cancel;
} else {
// Make results available in property.
Results = e.Result as List<string>;
if (Results == null || Results.Count == 0) {
// Shouldn't happen -- generator should have reported error.
MessageBox.Show(this, "Internal error: no files generated",
Properties.Resources.OPERATION_FAILED,
MessageBoxButtons.OK, MessageBoxIcon.Error);
} else {
Debug.WriteLine("SUCCESS " + Results.Count);
}
DialogResult = DialogResult.OK;
}
// Whatever the case, we're done.
this.Close();
}
}
}