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