Java Code Examples for org.eclipse.swt.custom.StyledText#getOffsetAtLine()

public void cut() {
    CompositeTab selection = (CompositeTab) this.getSelection();
    if (selection != null && !selection.getState().getFileNameObj().isReadOnly()) {
        final StyledText ct = selection.getTextComposite();
        if (!selection.getState().getFileNameObj().getVertexManager().isUpdated()){
            ct.copy();
            return;
        }
        final int x = ct.getSelection().x;
        if (ct.getSelection().y == x) {
            final int start = ct.getOffsetAtLine(ct.getLineAtOffset(x));
            ct.setSelection(start, start + ct.getLine(ct.getLineAtOffset(x)).length());
        }
        final int x2 = ct.getSelection().x;
        if (ct.getSelection().y == x2) {
            ct.forceFocus();
            return;
        }
        ct.cut();
        ct.forceFocus();
    }
}
 

public void delete() {
    CompositeTab selection = (CompositeTab) this.getSelection();
    if (selection != null && !selection.getState().getFileNameObj().isReadOnly()) {
        if (!selection.getState().getFileNameObj().getVertexManager().isUpdated()){
            return;
        }
        final StyledText ct = selection.getTextComposite();
        final int x = ct.getSelection().x;
        if (ct.getSelection().y == x) {
            final int start = ct.getOffsetAtLine(ct.getLineAtOffset(x));
            ct.setSelection(start, start + ct.getLine(ct.getLineAtOffset(x)).length());
        }
        final int x2 = ct.getSelection().x;
        if (ct.getSelection().y == x2) {
            ct.forceFocus();
            return;
        }
        ct.insert(""); //$NON-NLS-1$
        ct.setSelection(new Point(x, x));
        ct.forceFocus();
    }
}
 

public void copy() {
    CompositeTab selection = (CompositeTab) this.getSelection();
    if (selection != null) {
        final StyledText ct = selection.getTextComposite();
        final int x = ct.getSelection().x;
        if (ct.getSelection().y == x) {
            final int start = ct.getOffsetAtLine(ct.getLineAtOffset(x));
            ct.setSelection(start, start + ct.getLine(ct.getLineAtOffset(x)).length());
        }
        ct.copy();
        ct.forceFocus();
    }
}
 

private void insertHistory(final boolean back) {

		if (history.size() == 0) {
			ViewsHelper.requestUserAttention(this, "No history");
			return;
		}
		if (indexInHistory <= 0) {
			if (back) {
				ViewsHelper.requestUserAttention(this, "No more history");
			}
			indexInHistory = 0;
		} else if (indexInHistory >= history.size() - 1) {
			if (!back) {
				ViewsHelper.requestUserAttention(this, "No more history");
			}
			indexInHistory = history.size() - 1;
		}
		try {
			final StyledText text = viewer.getTextWidget();
			final int lineIndex = text.getLineCount() - 1;
			final int nbChars = text.getCharCount();
			final int firstOffset = text.getOffsetAtLine(lineIndex) + PROMPT.length();
			viewer.getDocument().replace(firstOffset, nbChars - firstOffset, history.get(indexInHistory));
			text.setCaretOffset(text.getCharCount());
			if (back) {
				indexInHistory--;
			} else {
				indexInHistory++;
			}
		} catch (final org.eclipse.jface.text.BadLocationException e1) {}

	}
 

public void setLineColumn() {
	int line, col;

	if (mainfolder.getSelection() != null && mainfolder.getSelection().getControl() instanceof TabTextView) {
		StyledText txt = ((TabTextView) mainfolder.getSelection().getControl()).getStyledText();
		line = txt.getLineAtOffset(txt.getCaretOffset());
		col = txt.getCaretOffset() - txt.getOffsetAtLine(line) + 1;

		lineColumn.setText("Location: " + (line + 1) + " : " + col);
		statusBar.pack();
	} else
		lineColumn.setText("");
}
 

private void openFileGotoLine(SymitarFile file, int line){
	Object o;
	o = openFile(file);
	
	EditorComposite editor = null;
	if (o instanceof EditorComposite)
		editor = (EditorComposite) o;

	try {
		if(editor == null)
			return;
		StyledText newTxt = editor.getStyledText();
		//newTxt.setCaretOffset(newTxt.getText().length());
		newTxt.showSelection();


		int offset = newTxt.getOffsetAtLine(line);
		newTxt.setSelection(offset,offset);
		
		editor.handleCaretChange();
		// Drop Navigation Position
		newTxt.showSelection();
		editor.lineHighlight();
	} catch (IllegalArgumentException ex) {
		// Just ignore it
	}
}
 

/**
 * Find the next instance of the search string in the buffer
 * 
 * @param searchStr
 * @param addit - true when just added text to search string
 * @return true if we found a match
 */
protected boolean findNext(String searchStr,boolean addit) {
	if (isSearchEnabled()) {
		setRegexLD(false);
		StyledText text = getTextWidget();
		IFindReplaceTarget target = getTarget();
		if (text != null && target != null) {
			int searchIndex = getSearchOffset();
			if (searchIndex != WRAP_INDEX) {
				Point p = getSelection();
				// if not building the string (or wrapping) search from caret position
				if (!addit) {
					if (isFound() && p != null) {
						searchIndex = p.x;
						if (isForward()) {
							// increment index by (actual or implicit) selection width
							searchIndex += (p.y == 0 ? getEol().length() : p.y); 
						}
					} else {
						// Cannot use target.getSelection since that does not return which side of the
						// selection the caret is on.
						searchIndex = text.getCaretOffset();
					}
				}
				if (!forward && p != null) {
					// if at beginning of line, back up by full eol, else just 1
					searchIndex -= ((p.x == text.getOffsetAtLine(text.getLineAtOffset(p.x))) ? getEol().length() : 1);
				}
			}
			int index = findTarget(target,searchStr,searchIndex, forward);
			boolean justFound = (index != WRAP_INDEX);
			if (isFound() && !justFound && (addit && !isRegexp())) {
				beep();
			} else if (!addit) {
				setSearchOffset(index);
			}
			setFound(justFound);
		}
	}
	return isFound();
}
 

private void computeLine(String string, int firstCharPosition, StyledText styledText, int line, int lineHeight,
        SortedMap<Integer, List<VerticalLinesToDraw>> lineToVerticalLinesToDraw) {
    int lineOffset = -1;

    String spaces = string.substring(0, firstCharPosition);
    int level = 0;
    int whitespacesFound = 0;
    int tabWidthUsed = getTabWidth();
    for (int j = 0; j < firstCharPosition - 1; j++) { //-1 because we don't want to cover for the column where a non whitespace char is.
        char c = spaces.charAt(j);
        if (c == '\t') {
            level++;
            whitespacesFound = 0;
        } else {
            //whitespace (not tab)
            whitespacesFound++;
            if (whitespacesFound % tabWidthUsed == 0) {
                level++;
                whitespacesFound = 0;
            }
        }
        if (level > 0) {
            Point point1;

            if (lineOffset == -1) {
                lineOffset = styledText.getOffsetAtLine(line);
            }
            point1 = styledText.getLocationAtOffset(lineOffset + j + 1);
            int xCoord = point1.x + 3;

            VerticalLinesToDraw verticalLinesToDraw = new VerticalLinesToDraw(xCoord,
                    point1.y, xCoord, point1.y + lineHeight);

            List<VerticalLinesToDraw> lst = lineToVerticalLinesToDraw.get(line);
            if (lst == null) {
                lst = new ArrayList<VerticalLinesToDraw>();
                lineToVerticalLinesToDraw.put(line, lst);
            }
            lst.add(verticalLinesToDraw);

            level--;
        }
    }
}