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369 lines (260 loc) · 8.38 KB
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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
SketchCode - data class for a single file inside a sketch
Part of the Processing project - http://processing.org
Copyright (c) 2004-11 Ben Fry and Casey Reas
Copyright (c) 2001-04 Massachusetts Institute of Technology
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package processing.app;
import java.io.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.undo.*;
/**
* Represents a single tab of a sketch.
*/
public class SketchCode {
/** Pretty name (no extension), not the full file name */
private String prettyName;
/** File object for where this code is located */
private File file;
/** Extension for this file (no dots, and in lowercase). */
private String extension;
/** Text of the program text for this tab */
private String program;
/** Last version of the program on disk. */
private String savedProgram;
/** Document object for this tab. Currently this is a SyntaxDocument. */
private Document document;
/** Last time this tab was visited */
long visited;
/** The last time this tab was saved to disk */
private long lastModified;
/**
* Undo Manager for this tab, each tab keeps track of their own
* Editor.undo will be set to this object when this code is the tab
* that's currently the front.
*/
private UndoManager undo = new UndoManager();
/** What was on top of the undo stack when last saved. */
// private UndoableEdit lastEdit;
// saved positions from last time this tab was used
private int selectionStart;
private int selectionStop;
private int scrollPosition;
private boolean modified;
/** name of .java file after preproc */
// private String preprocName;
/** where this code starts relative to the concat'd code */
private int preprocOffset;
public SketchCode(File file, String extension) {
this.file = file;
this.extension = extension;
makePrettyName();
try {
load();
} catch (IOException e) {
System.err.println("Error while loading code " + file.getName());
}
}
protected void makePrettyName() {
prettyName = file.getName();
int dot = prettyName.lastIndexOf('.');
prettyName = prettyName.substring(0, dot);
}
public File getFile() {
return file;
}
protected boolean fileExists() {
return file.exists();
}
protected boolean fileReadOnly() {
return !file.canWrite();
}
protected boolean deleteFile() {
return file.delete();
}
protected boolean renameTo(File what, String ext) {
// System.out.println("renaming " + file);
// System.out.println(" to " + what);
boolean success = file.renameTo(what);
if (success) {
this.file = what; // necessary?
this.extension = ext;
makePrettyName();
}
return success;
}
public void copyTo(File dest) throws IOException {
Util.saveFile(program, dest);
}
public String getFileName() {
return file.getName();
}
public String getPrettyName() {
return prettyName;
}
public String getExtension() {
return extension;
}
public boolean isExtension(String what) {
return extension.equals(what);
}
/** get the current text for this tab */
public String getProgram() {
return program;
}
/** set the current text for this tab */
public void setProgram(String replacement) {
program = replacement;
}
/** get the last version saved of this tab */
public String getSavedProgram() {
return savedProgram;
}
public int getLineCount() {
return Util.countLines(program);
}
public void setModified(boolean modified) {
this.modified = modified;
}
public boolean isModified() {
return modified;
}
// public void setPreprocName(String preprocName) {
// this.preprocName = preprocName;
// }
//
//
// public String getPreprocName() {
// return preprocName;
// }
public void setPreprocOffset(int preprocOffset) {
this.preprocOffset = preprocOffset;
}
public int getPreprocOffset() {
return preprocOffset;
}
public void addPreprocOffset(int extra) {
preprocOffset += extra;
}
public Document getDocument() {
return document;
}
public String getDocumentText() throws BadLocationException {
return document.getText(0, document.getLength());
}
public void setDocument(Document d) {
document = d;
}
public UndoManager getUndo() {
return undo;
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
// TODO these could probably be handled better, since it's a general state
// issue that's read/write from only one location in Editor (on tab switch.)
public int getSelectionStart() {
return selectionStart;
}
public int getSelectionStop() {
return selectionStop;
}
public int getScrollPosition() {
return scrollPosition;
}
protected void setState(String p, int start, int stop, int pos) {
program = p;
selectionStart = start;
selectionStop = stop;
scrollPosition = pos;
}
public long lastVisited() {
return visited;
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/**
* Load this piece of code from a file.
*/
public void load() throws IOException {
program = Util.loadFile(file);
if (program == null) {
System.err.println("There was a problem loading " + file);
System.err.println("This may happen because you don't have permissions to read the file, or the file has gone missing.");
throw new IOException("Cannot read or access " + file);
}
// Remove NUL characters because they'll cause problems,
// and their presence is very difficult to debug.
// https://github.com/processing/processing/issues/1973
if (program.indexOf('\0') != -1) {
program = program.replaceAll("\0", "");
}
savedProgram = program;
// This used to be the "Fix Encoding and Reload" warning, but since that
// tool has been removed, let's ramble about text editors and encodings.
if (program.indexOf('\uFFFD') != -1) {
System.err.println(file.getName() + " contains unrecognized characters.");
System.err.println("You should re-open " + file.getName() +
" with a text editor,");
System.err.println("and re-save it in UTF-8 format. Otherwise, you can");
System.err.println("delete the bad characters to get rid of this warning.");
System.err.println();
}
setLastModified();
setModified(false);
}
/**
* Save this piece of code, regardless of whether the modified
* flag is set or not.
*/
public void save() throws IOException {
// TODO re-enable history
//history.record(s, SketchHistory.SAVE);
Util.saveFile(program, file);
savedProgram = program;
lastModified = file.lastModified();
setModified(false);
}
/**
* Save this file to another location, used by Sketch.saveAs()
*/
public void saveAs(File newFile) throws IOException {
Util.saveFile(program, newFile);
savedProgram = program;
file = newFile;
makePrettyName();
setLastModified();
setModified(false);
}
/**
* Called when the sketch folder name/location has changed. Called when
* renaming tab 0, the main code.
*/
public void setFolder(File sketchFolder) {
file = new File(sketchFolder, file.getName());
}
/**
* Set the last known modification time, so that we're not re-firing
* "hey, this is modified!" events incessantly.
*/
public void setLastModified() {
lastModified = file.lastModified();
}
/**
* Used to determine whether this file was modified externally
* @return The time the file was last modified
*/
public long getLastModified() {
return lastModified;
}
}