public void customizeDocumentCommand(IDocument document, DocumentCommand c) {
if (!isSmartInsertMode()) {
return;
}
if (!(document instanceof IStructuredDocument)) {
// This shouldn't happen unless this strategy is used on an invalid document
return;
}
IStructuredDocument doc = (IStructuredDocument) document;
// Handle newlines/indentation
if (c.length == 0
&& c.text != null
&& TextUtilities.endsWith(doc.getLegalLineDelimiters(), c.text) != -1) {
IModelManager modelManager = StructuredModelManager.getModelManager();
IStructuredModel model = modelManager.getModelForRead(doc);
if (model != null) {
try {
final int offset = c.offset;
int lineStart = findLineStart(doc, offset);
int textStart = findTextStart(doc, lineStart, offset);
IStructuredDocumentRegion region = doc.getRegionAtCharacterOffset(textStart);
if (region != null && region.getType().equals(XML_TAG_NAME)) {
Pair<Integer, Integer> balance = getBalance(doc, textStart, offset);
int tagBalance = balance.getFirst();
int bracketBalance = balance.getSecond();
String lineIndent = ""; // $NON-NLS-1$
if (textStart > lineStart) {
lineIndent = doc.get(lineStart, textStart - lineStart);
}
// We only care if tag or bracket balance is greater than 0;
// we never *dedent* on negative balances
boolean addIndent = false;
if (bracketBalance < 0) {
// Handle
// <foo
// ></foo>^
// and
// <foo
// />^
ITextRegion left = getRegionAt(doc, offset, true /*biasLeft*/);
if (left != null
&& (left.getType().equals(XML_TAG_CLOSE)
|| left.getType().equals(XML_EMPTY_TAG_CLOSE))) {
// Find the corresponding open tag...
// The org.eclipse.wst.xml.ui.gotoMatchingTag frequently
// doesn't work, it just says "No matching brace found"
// (or I would use that here).
int targetBalance = 0;
ITextRegion right = getRegionAt(doc, offset, false /*biasLeft*/);
if (right != null && right.getType().equals(XML_END_TAG_OPEN)) {
targetBalance = -1;
}
int openTag =
AndroidXmlCharacterMatcher.findTagBackwards(doc, offset, targetBalance);
if (openTag != -1) {
// Look up the indentation of the given line
lineIndent = AndroidXmlEditor.getIndentAtOffset(doc, openTag);
}
}
} else if (tagBalance > 0 || bracketBalance > 0) {
// Add indentation
addIndent = true;
}
StringBuilder sb = new StringBuilder(c.text);
sb.append(lineIndent);
String oneIndentUnit = XmlFormatPreferences.create().getOneIndentUnit();
if (addIndent) {
sb.append(oneIndentUnit);
}
// Handle
// <foo>^</foo>
// turning into
// <foo>
// ^
// </foo>
ITextRegion left = getRegionAt(doc, offset, true /*biasLeft*/);
ITextRegion right = getRegionAt(doc, offset, false /*biasLeft*/);
if (left != null
&& right != null
&& left.getType().equals(XML_TAG_CLOSE)
&& right.getType().equals(XML_END_TAG_OPEN)) {
// Move end tag
if (tagBalance > 0 && bracketBalance < 0) {
sb.append(oneIndentUnit);
}
c.caretOffset = offset + sb.length();
c.shiftsCaret = false;
sb.append(TextUtilities.getDefaultLineDelimiter(doc));
sb.append(lineIndent);
}
c.text = sb.toString();
} else if (region != null && region.getType().equals(XML_CONTENT)) {
// Indenting in text content. If you're in the middle of editing
// text, just copy the current line indentation.
// However, if you're editing in leading whitespace (e.g. you press
// newline on a blank line following say an element) then figure
// out the indentation as if the newline had been pressed at the
// end of the element, and insert that amount of indentation.
// In this case we need to also make sure to subtract any existing
// whitespace on the current line such that if we have
//
// <foo>
// ^ <bar/>
// </foo>
//
// you end up with
//
// <foo>
//
// ^<bar/>
// </foo>
//
String text = region.getText();
int regionStart = region.getStartOffset();
int delta = offset - regionStart;
boolean inWhitespacePrefix = true;
for (int i = 0, n = Math.min(delta, text.length()); i < n; i++) {
char ch = text.charAt(i);
if (!Character.isWhitespace(ch)) {
inWhitespacePrefix = false;
break;
}
}
if (inWhitespacePrefix) {
IStructuredDocumentRegion previous = region.getPrevious();
if (previous != null && previous.getType() == XML_TAG_NAME) {
ITextRegionList subRegions = previous.getRegions();
ITextRegion last = subRegions.get(subRegions.size() - 1);
if (last.getType() == XML_TAG_CLOSE || last.getType() == XML_EMPTY_TAG_CLOSE) {
int begin =
AndroidXmlCharacterMatcher.findTagBackwards(
doc, previous.getStartOffset() + last.getStart(), 0);
int prevLineStart = findLineStart(doc, begin);
int prevTextStart = findTextStart(doc, prevLineStart, begin);
String lineIndent = ""; // $NON-NLS-1$
if (prevTextStart > prevLineStart) {
lineIndent = doc.get(prevLineStart, prevTextStart - prevLineStart);
}
StringBuilder sb = new StringBuilder(c.text);
sb.append(lineIndent);
String oneIndentUnit = XmlFormatPreferences.create().getOneIndentUnit();
// See if there is whitespace on the insert line that
// we should also remove
for (int i = delta, n = text.length(); i < n; i++) {
char ch = text.charAt(i);
if (ch == ' ') {
c.length++;
} else {
break;
}
}
boolean onClosingTagLine = false;
if (text.indexOf('\n', delta) == -1) {
IStructuredDocumentRegion next = region.getNext();
if (next != null && next.getType() == XML_TAG_NAME) {
String nextType = next.getRegions().get(0).getType();
if (nextType == XML_END_TAG_OPEN) {
onClosingTagLine = true;
}
}
}
boolean addIndent = (last.getType() == XML_TAG_CLOSE) && !onClosingTagLine;
if (addIndent) {
sb.append(oneIndentUnit);
}
c.text = sb.toString();
return;
}
}
}
copyPreviousLineIndentation(doc, c);
} else {
copyPreviousLineIndentation(doc, c);
}
} catch (BadLocationException e) {
AdtPlugin.log(e, null);
} finally {
model.releaseFromRead();
}
}
}
}
public void testDropZones() {
List<Pair<Point, String[]>> zones = new ArrayList<Pair<Point, String[]>>();
zones.add(
Pair.of(
new Point(51 + 10, 181 + 10),
new String[] {"above=@+id/Centered", "toLeftOf=@+id/Centered"}));
zones.add(
Pair.of(
new Point(71 + 10, 181 + 10),
new String[] {"above=@+id/Centered", "alignLeft=@+id/Centered"}));
zones.add(
Pair.of(
new Point(104 + 10, 181 + 10),
new String[] {"above=@+id/Centered", "alignRight=@+id/Centered"}));
zones.add(
Pair.of(
new Point(137 + 10, 181 + 10),
new String[] {"above=@+id/Centered", "alignRight=@+id/Centered"}));
zones.add(
Pair.of(
new Point(170 + 10, 181 + 10),
new String[] {"above=@+id/Centered", "toRightOf=@+id/Centered"}));
zones.add(
Pair.of(
new Point(51 + 10, 279 + 10),
new String[] {"below=@+id/Centered", "toLeftOf=@+id/Centered"}));
zones.add(
Pair.of(
new Point(71 + 10, 279 + 10),
new String[] {"below=@+id/Centered", "alignLeft=@+id/Centered"}));
zones.add(
Pair.of(
new Point(104 + 10, 279 + 10),
new String[] {"below=@+id/Centered", "alignLeft=@+id/Centered"}));
zones.add(
Pair.of(
new Point(137 + 10, 279 + 10),
new String[] {"below=@+id/Centered", "alignRight=@+id/Centered"}));
zones.add(
Pair.of(
new Point(170 + 10, 279 + 10),
new String[] {"below=@+id/Centered", "toRightOf=@+id/Centered"}));
zones.add(
Pair.of(
new Point(51 + 10, 201 + 10),
new String[] {"toLeftOf=@+id/Centered", "alignTop=@+id/Centered"}));
zones.add(
Pair.of(
new Point(51 + 10, 227 + 10),
new String[] {"toLeftOf=@+id/Centered", "alignTop=@+id/Centered"}));
zones.add(
Pair.of(
new Point(170 + 10, 201 + 10),
new String[] {"toRightOf=@+id/Centered", "alignTop=@+id/Centered"}));
zones.add(
Pair.of(
new Point(51 + 10, 253 + 10),
new String[] {"toLeftOf=@+id/Centered", "alignBottom=@+id/Centered"}));
zones.add(
Pair.of(
new Point(170 + 10, 227 + 10),
new String[] {
"toRightOf=@+id/Centered", "alignTop=@+id/Centered", "alignBottom=@+id/Centered"
}));
zones.add(
Pair.of(
new Point(170 + 10, 253 + 10),
new String[] {"toRightOf=@+id/Centered", "alignBottom=@+id/Centered"}));
for (Pair<Point, String[]> zonePair : zones) {
Point dropPoint = zonePair.getFirst();
String[] attachments = zonePair.getSecond();
// If we drag right into the button itself, not a valid drop position
INode inserted =
dragInto(
new Rect(0, 0, 105, 80),
new Point(120, 240),
dropPoint,
1,
-1,
attachments,
// Bounds rectangle
"useStyle(DROP_RECIPIENT), drawRect(Rect[0,0,240,480])",
// Drop zones
"useStyle(DROP_ZONE), "
+ "drawRect(Rect[51,181,20,20]), drawRect(Rect[71,181,33,20]), "
+ "drawRect(Rect[104,181,33,20]), drawRect(Rect[137,181,33,20]), "
+ "drawRect(Rect[170,181,20,20]), drawRect(Rect[51,279,20,20]), "
+ "drawRect(Rect[71,279,33,20]), drawRect(Rect[104,279,33,20]), "
+ "drawRect(Rect[137,279,33,20]), drawRect(Rect[170,279,20,20]), "
+ "drawRect(Rect[51,201,20,26]), drawRect(Rect[51,227,20,26]), "
+ "drawRect(Rect[51,253,20,26]), drawRect(Rect[170,201,20,26]), "
+ "drawRect(Rect[170,227,20,26]), drawRect(Rect[170,253,20,26])");
for (String attachment : attachments) {
String[] elements = attachment.split("=");
String name = "layout_" + elements[0];
String value = elements[1];
assertEquals(value, inserted.getStringAttr(ANDROID_URI, name));
}
}
}