package jexer;
import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
import jexer.bits.CellAttributes;
import jexer.bits.StringUtils;
/**
* The document being edited.
*/
- private Document document;
+ protected Document document;
/**
- * The default color for the TEditor class.
+ * The default color for the editable text.
*/
private CellAttributes defaultColor = null;
*/
private int selectionLine1;
+ /**
+ * The list of undo/redo states.
+ */
+ private List<SavedState> undoList = new ArrayList<SavedState>();
+
+ /**
+ * The position in undoList for undo/redo.
+ */
+ private int undoListI = 0;
+
+ /**
+ * The maximum size of the undo list.
+ */
+ private int undoLevel = 50;
+
+ /**
+ * The saved state for an undo/redo operation.
+ */
+ private class SavedState {
+ /**
+ * The Document state.
+ */
+ public Document document;
+
+ /**
+ * The topmost line number in the visible area. 0-based.
+ */
+ public int topLine = 0;
+
+ /**
+ * The leftmost column number in the visible area. 0-based.
+ */
+ public int leftColumn = 0;
+
+ }
+
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
// ------------------------------------------------------------------------
if (mouse.isMouse1()) {
// Selection.
+ int newLine = topLine + mouse.getY();
+ int newX = leftColumn + mouse.getX();
+
inSelection = true;
+ if (newLine > document.getLineCount() - 1) {
+ selectionLine0 = document.getLineCount() - 1;
+ } else {
+ selectionLine0 = topLine + mouse.getY();
+ }
selectionColumn0 = leftColumn + mouse.getX();
- selectionLine0 = topLine + mouse.getY();
+ selectionColumn0 = Math.max(0, Math.min(selectionColumn0,
+ document.getLine(selectionLine0).getDisplayLength() - 1));
selectionColumn1 = selectionColumn0;
selectionLine1 = selectionLine0;
// Set the row and column
- int newLine = topLine + mouse.getY();
- int newX = leftColumn + mouse.getX();
if (newLine > document.getLineCount() - 1) {
// Go to the end
document.setLineNumber(document.getLineCount() - 1);
public void onMouseMotion(final TMouseEvent mouse) {
if (mouse.isMouse1()) {
+ // Set the row and column
+ int newLine = topLine + mouse.getY();
+ int newX = leftColumn + mouse.getX();
+ if ((newLine < 0) || (newX < 0)) {
+ return;
+ }
+
// Selection.
if (inSelection) {
- selectionColumn1 = leftColumn + mouse.getX();
- selectionLine1 = topLine + mouse.getY();
+ selectionColumn1 = newX;
+ selectionLine1 = newLine;
} else {
inSelection = true;
- selectionColumn0 = leftColumn + mouse.getX();
- selectionLine0 = topLine + mouse.getY();
+ selectionColumn0 = newX;
+ selectionLine0 = newLine;
selectionColumn1 = selectionColumn0;
selectionLine1 = selectionLine0;
}
- // Set the row and column
- int newLine = topLine + mouse.getY();
- int newX = leftColumn + mouse.getX();
if (newLine > document.getLineCount() - 1) {
// Go to the end
document.setLineNumber(document.getLineCount() - 1);
}
return;
}
-
document.setLineNumber(newLine);
setCursorY(mouse.getY());
if (newX >= document.getCurrentLine().getDisplayLength()) {
@Override
public void onKeypress(final TKeypressEvent keypress) {
if (keypress.getKey().isShift()) {
- // Selection.
- if (!inSelection) {
- inSelection = true;
- selectionColumn0 = document.getCursor();
- selectionLine0 = document.getLineNumber();
- selectionColumn1 = selectionColumn0;
- selectionLine1 = selectionLine0;
+ if (keypress.equals(kbShiftLeft)
+ || keypress.equals(kbShiftRight)
+ || keypress.equals(kbShiftUp)
+ || keypress.equals(kbShiftDown)
+ || keypress.equals(kbShiftPgDn)
+ || keypress.equals(kbShiftPgUp)
+ || keypress.equals(kbShiftHome)
+ || keypress.equals(kbShiftEnd)
+ ) {
+ // Shifted navigation keys enable selection
+ if (!inSelection) {
+ inSelection = true;
+ selectionColumn0 = document.getCursor();
+ selectionLine0 = document.getLineNumber();
+ selectionColumn1 = selectionColumn0;
+ selectionLine1 = selectionLine0;
+ }
}
} else {
if (keypress.equals(kbLeft)
// Non-shifted navigation keys disable selection.
inSelection = false;
}
+ if ((selectionColumn0 == selectionColumn1)
+ && (selectionLine0 == selectionLine1)
+ ) {
+ // The user clicked a spot and started typing.
+ inSelection = false;
+ }
}
if (keypress.equals(kbLeft)
document.end();
alignTopLine(false);
} else if (keypress.equals(kbIns)) {
- document.setOverwrite(!document.getOverwrite());
+ document.setOverwrite(!document.isOverwrite());
} else if (keypress.equals(kbDel)) {
if (inSelection) {
deleteSelection();
+ alignCursor();
} else {
+ saveUndo();
document.del();
+ alignCursor();
}
- alignCursor();
} else if (keypress.equals(kbBackspace)
|| keypress.equals(kbBackspaceDel)
) {
if (inSelection) {
deleteSelection();
+ alignTopLine(false);
} else {
+ saveUndo();
document.backspace();
+ alignTopLine(false);
}
- alignTopLine(false);
} else if (keypress.equals(kbTab)) {
deleteSelection();
- // Add spaces until we hit modulo 8.
- for (int i = document.getCursor(); (i + 1) % 8 != 0; i++) {
- document.addChar(' ');
- }
+ saveUndo();
+ document.tab();
+ alignCursor();
+ } else if (keypress.equals(kbShiftTab)) {
+ deleteSelection();
+ saveUndo();
+ document.backTab();
alignCursor();
} else if (keypress.equals(kbEnter)) {
deleteSelection();
+ saveUndo();
document.enter();
alignTopLine(true);
} else if (!keypress.getKey().isFnKey()
) {
// Plain old keystroke, process it
deleteSelection();
+ saveUndo();
document.addChar(keypress.getKey().getChar());
alignCursor();
} else {
if (text != null) {
for (int i = 0; i < text.length(); ) {
int ch = text.codePointAt(i);
- onKeypress(new TKeypressEvent(false, 0, ch, false, false,
- false));
+ switch (ch) {
+ case '\n':
+ onKeypress(new TKeypressEvent(kbEnter));
+ break;
+ case '\t':
+ onKeypress(new TKeypressEvent(kbTab));
+ break;
+ default:
+ if ((ch >= 0x20) && (ch != 0x7F)) {
+ onKeypress(new TKeypressEvent(false, 0, ch,
+ false, false, false));
+ }
+ break;
+ }
+
i += Character.charCount(ch);
}
}
public void draw() {
CellAttributes selectedColor = getTheme().getColor("teditor.selected");
+ boolean drawSelection = true;
+
int startCol = selectionColumn0;
int startRow = selectionLine0;
int endCol = selectionColumn1;
int endRow = selectionLine1;
if (((selectionColumn1 < selectionColumn0)
- && (selectionLine1 <= selectionLine0))
- || ((selectionColumn1 <= selectionColumn0)
- && (selectionLine1 < selectionLine0))
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
) {
- // The user selected from bottom-right to top-left. Reverse the
- // coordinates for the inverted section.
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
startCol = selectionColumn1;
startRow = selectionLine1;
endCol = selectionColumn0;
endRow = selectionLine0;
}
+ if ((startCol == endCol) && (startRow == endRow)) {
+ drawSelection = false;
+ }
for (int i = 0; i < getHeight(); i++) {
// Background line
}
// Highlight selected region
- if (inSelection) {
+ if (inSelection && drawSelection) {
if (startRow == endRow) {
if (topLine + i == startRow) {
for (x = startCol; x <= endCol; x++) {
// TEditorWidget ----------------------------------------------------------
// ------------------------------------------------------------------------
+ /**
+ * Set the undo level.
+ *
+ * @param undoLevel the maximum number of undo operations
+ */
+ public void setUndoLevel(final int undoLevel) {
+ this.undoLevel = undoLevel;
+ }
+
/**
* Align visible area with document current line.
*
return document.getLineLengthMax() + 1;
}
+ /**
+ * Get the current editing row plain text. 1-based.
+ *
+ * @param row the editing row number. Row 1 is the first row.
+ * @return the plain text of the row
+ */
+ public String getEditingRawLine(final int row) {
+ Line line = document.getLine(row - 1);
+ return line.getRawString();
+ }
+
/**
* Get the dirty value.
*
return document.isDirty();
}
+ /**
+ * Unset the dirty flag.
+ */
+ public void setNotDirty() {
+ document.setNotDirty();
+ }
+
+ /**
+ * Get the overwrite value.
+ *
+ * @return true if new text will overwrite old text
+ */
+ public boolean isOverwrite() {
+ return document.isOverwrite();
+ }
+
/**
* Save contents to file.
*
* Delete text within the selection bounds.
*/
private void deleteSelection() {
- if (inSelection == false) {
+ if (!inSelection) {
return;
}
+
+ saveUndo();
+
inSelection = false;
int startCol = selectionColumn0;
int endCol = selectionColumn1;
int endRow = selectionLine1;
+ /*
+ System.err.println("INITIAL: " + startRow + " " + startCol + " " +
+ endRow + " " + endCol + " " +
+ document.getLineNumber() + " " + document.getCursor());
+ */
+
if (((selectionColumn1 < selectionColumn0)
- && (selectionLine1 <= selectionLine0))
- || ((selectionColumn1 <= selectionColumn0)
- && (selectionLine1 < selectionLine0))
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
) {
- // The user selected from bottom-right to top-left. Reverse the
- // coordinates for the inverted section.
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
startCol = selectionColumn1;
startRow = selectionLine1;
endCol = selectionColumn0;
endRow = selectionLine0;
+
+ if (endRow >= document.getLineCount()) {
+ // The selection started beyond EOF, trim it to EOF.
+ endRow = document.getLineCount() - 1;
+ endCol = document.getLine(endRow).getDisplayLength();
+ } else if (endRow == document.getLineCount() - 1) {
+ // The selection started beyond EOF, trim it to EOF.
+ if (endCol >= document.getLine(endRow).getDisplayLength()) {
+ endCol = document.getLine(endRow).getDisplayLength() - 1;
+ }
+ }
+ }
+ /*
+ System.err.println("FLIP: " + startRow + " " + startCol + " " +
+ endRow + " " + endCol + " " +
+ document.getLineNumber() + " " + document.getCursor());
+ System.err.println(" --END: " + endRow + " " + document.getLineCount() +
+ " " + document.getLine(endRow).getDisplayLength());
+ */
+
+ assert (endRow < document.getLineCount());
+ if (endCol >= document.getLine(endRow).getDisplayLength()) {
+ endCol = document.getLine(endRow).getDisplayLength() - 1;
+ }
+ if (endCol < 0) {
+ endCol = 0;
+ }
+ if (startCol >= document.getLine(startRow).getDisplayLength()) {
+ startCol = document.getLine(startRow).getDisplayLength() - 1;
+ }
+ if (startCol < 0) {
+ startCol = 0;
}
// Place the cursor on the selection end, and "press backspace" until
// the cursor matches the selection start.
+ /*
+ System.err.println("BEFORE: " + startRow + " " + startCol + " " +
+ endRow + " " + endCol + " " +
+ document.getLineNumber() + " " + document.getCursor());
+ */
document.setLineNumber(endRow);
document.setCursor(endCol + 1);
while (!((document.getLineNumber() == startRow)
&& (document.getCursor() == startCol))
) {
+ /*
+ System.err.println("DURING: " + startRow + " " + startCol + " " +
+ endRow + " " + endCol + " " +
+ document.getLineNumber() + " " + document.getCursor());
+ */
+
document.backspace();
}
alignTopLine(true);
* Copy text within the selection bounds to clipboard.
*/
private void copySelection() {
- if (inSelection == false) {
+ if (!inSelection) {
return;
}
+ getClipboard().copyText(getSelection());
+ }
+
+ /**
+ * Set the selection.
+ *
+ * @param startRow the starting row number. 0-based: row 0 is the first
+ * row.
+ * @param startColumn the starting column number. 0-based: column 0 is
+ * the first column.
+ * @param endRow the ending row number. 0-based: row 0 is the first row.
+ * @param endColumn the ending column number. 0-based: column 0 is the
+ * first column.
+ */
+ public void setSelection(final int startRow, final int startColumn,
+ final int endRow, final int endColumn) {
+
+ inSelection = true;
+ selectionLine0 = startRow;
+ selectionColumn0 = startColumn;
+ selectionLine1 = endRow;
+ selectionColumn1 = endColumn;
+ }
+
+ /**
+ * Copy text within the selection bounds to a string.
+ *
+ * @return the selection as a string, or null if there is no selection
+ */
+ public String getSelection() {
+ if (!inSelection) {
+ return null;
+ }
int startCol = selectionColumn0;
int startRow = selectionLine0;
int endRow = selectionLine1;
if (((selectionColumn1 < selectionColumn0)
- && (selectionLine1 <= selectionLine0))
- || ((selectionColumn1 <= selectionColumn0)
- && (selectionLine1 < selectionLine0))
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
) {
- // The user selected from bottom-right to top-left. Reverse the
- // coordinates for the inverted section.
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
startCol = selectionColumn1;
startRow = selectionLine1;
endCol = selectionColumn0;
i += Character.charCount(ch);
}
}
+ return sb.toString();
+ }
+
+ /**
+ * Get the selection starting row number.
+ *
+ * @return the starting row number, or -1 if there is no selection.
+ * 0-based: row 0 is the first row.
+ */
+ public int getSelectionStartRow() {
+ if (!inSelection) {
+ return -1;
+ }
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
- getClipboard().copyText(sb.toString());
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
+ ) {
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+ return startRow;
+ }
+
+ /**
+ * Get the selection starting column number.
+ *
+ * @return the starting column number, or -1 if there is no selection.
+ * 0-based: column 0 is the first column.
+ */
+ public int getSelectionStartColumn() {
+ if (!inSelection) {
+ return -1;
+ }
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
+
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
+ ) {
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+ return startCol;
+ }
+
+ /**
+ * Get the selection ending row number.
+ *
+ * @return the ending row number, or -1 if there is no selection.
+ * 0-based: row 0 is the first row.
+ */
+ public int getSelectionEndRow() {
+ if (!inSelection) {
+ return -1;
+ }
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
+
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
+ ) {
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+ return endRow;
+ }
+
+ /**
+ * Get the selection ending column number.
+ *
+ * @return the ending column number, or -1 if there is no selection.
+ * 0-based: column 0 is the first column.
+ */
+ public int getSelectionEndColumn() {
+ if (!inSelection) {
+ return -1;
+ }
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
+
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 == selectionLine0))
+ || (selectionLine1 < selectionLine0)
+ ) {
+ // The user selected from bottom-to-top and/or right-to-left.
+ // Reverse the coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+ return endCol;
+ }
+
+ /**
+ * Unset the selection.
+ */
+ public void unsetSelection() {
+ inSelection = false;
+ }
+
+ /**
+ * Replace whatever is being selected with new text. If not in
+ * selection, nothing is replaced.
+ *
+ * @param text the new replacement text
+ */
+ public void replaceSelection(final String text) {
+ if (!inSelection) {
+ return;
+ }
+
+ // Delete selected text, then paste text from clipboard.
+ deleteSelection();
+
+ for (int i = 0; i < text.length(); ) {
+ int ch = text.codePointAt(i);
+ switch (ch) {
+ case '\n':
+ onKeypress(new TKeypressEvent(kbEnter));
+ break;
+ case '\t':
+ onKeypress(new TKeypressEvent(kbTab));
+ break;
+ default:
+ if ((ch >= 0x20) && (ch != 0x7F)) {
+ onKeypress(new TKeypressEvent(false, 0, ch,
+ false, false, false));
+ }
+ break;
+ }
+ i += Character.charCount(ch);
+ }
+ }
+
+ /**
+ * Check if selection is available.
+ *
+ * @return true if a selection has been made
+ */
+ public boolean hasSelection() {
+ return inSelection;
+ }
+
+ /**
+ * Get the entire contents of the editor as one string.
+ *
+ * @return the editor contents
+ */
+ public String getText() {
+ return document.getText();
+ }
+
+ /**
+ * Set the entire contents of the editor from one string.
+ *
+ * @param text the new contents
+ */
+ public void setText(final String text) {
+ document = new Document(text, defaultColor);
+ unsetSelection();
+ topLine = 0;
+ leftColumn = 0;
}
// ------------------------------------------------------------------------
return true;
}
+ /**
+ * Save undo state.
+ */
+ private void saveUndo() {
+ SavedState state = new SavedState();
+ state.document = document.dup();
+ state.topLine = topLine;
+ state.leftColumn = leftColumn;
+ if (undoLevel > 0) {
+ while (undoList.size() > undoLevel) {
+ undoList.remove(0);
+ }
+ }
+ undoList.add(state);
+ undoListI = undoList.size() - 1;
+ }
+
+ /**
+ * Undo an edit.
+ */
+ public void undo() {
+ inSelection = false;
+ if ((undoListI >= 0) && (undoListI < undoList.size())) {
+ SavedState state = undoList.get(undoListI);
+ document = state.document.dup();
+ topLine = state.topLine;
+ leftColumn = state.leftColumn;
+ undoListI--;
+ setCursorY(document.getLineNumber() - topLine);
+ alignCursor();
+ }
+ }
+
+ /**
+ * Redo an edit.
+ */
+ public void redo() {
+ inSelection = false;
+ if ((undoListI >= 0) && (undoListI < undoList.size())) {
+ SavedState state = undoList.get(undoListI);
+ document = state.document.dup();
+ topLine = state.topLine;
+ leftColumn = state.leftColumn;
+ undoListI++;
+ setCursorY(document.getLineNumber() - topLine);
+ alignCursor();
+ }
+ }
+
+ /**
+ * Trim trailing whitespace from lines and trailing empty
+ * lines from the document.
+ */
+ public void cleanWhitespace() {
+ document.cleanWhitespace();
+ setCursorY(document.getLineNumber() - topLine);
+ alignCursor();
+ }
+
+ /**
+ * Set keyword highlighting.
+ *
+ * @param enabled if true, enable keyword highlighting
+ */
+ public void setHighlighting(final boolean enabled) {
+ document.setHighlighting(enabled);
+ }
+
}
git://git.nikiroo.be / fanfix.git / blobdiff