private void handleRowClick(MouseDownEvent event, TableRowElement row) {
int modifiers = KeyboardShortcut.getModifierValue(event.getNativeEvent());
modifiers &= ~KeyboardShortcut.ALT; // ALT has no effect
if (!allowMultiSelect_) modifiers = KeyboardShortcut.NONE;
// We'll treat Ctrl and Meta as equivalent--and normalize to Ctrl.
if (KeyboardShortcut.META == (modifiers & KeyboardShortcut.META))
modifiers |= KeyboardShortcut.CTRL;
modifiers &= ~KeyboardShortcut.META;
if (modifiers == KeyboardShortcut.NONE) {
// Select only the target row
clearSelection();
setSelected(row, true);
} else if (modifiers == KeyboardShortcut.CTRL) {
// Toggle the target row
setSelected(row, !isSelected(row));
} else {
// SHIFT or CTRL+SHIFT
int target = row.getRowIndex();
Integer min = null;
Integer max = null;
for (TableRowElement selectedRow : selectedRows_) {
if (min == null) min = selectedRow.getRowIndex();
max = selectedRow.getRowIndex();
}
int offset; // selection offset
int length; // selection length
if (min == null) {
// Nothing is selected
offset = target;
length = 1;
} else if (target < min) {
// Select target..max
offset = target;
length = max - target + 1;
} else if (target > max) {
offset = min;
length = target - min + 1;
} else {
// target is in between min and max
if (modifiers == (KeyboardShortcut.CTRL | KeyboardShortcut.SHIFT)) {
offset = min;
length = target - min + 1;
} else {
offset = target;
length = 1;
}
}
clearSelection();
if (length > 0) {
setSelectedPhysical(offset, length, true);
}
}
}
private void handleKeyDown(KeyDownEvent event) {
int modifiers = KeyboardShortcut.getModifierValue(event.getNativeEvent());
switch (event.getNativeKeyCode()) {
case KeyCodes.KEY_UP:
case KeyCodes.KEY_DOWN:
break;
default:
return;
}
if (!allowMultiSelect_) modifiers = KeyboardShortcut.NONE;
event.preventDefault();
event.stopPropagation();
switch (modifiers) {
case 0:
case KeyboardShortcut.SHIFT:
break;
default:
return;
}
sortSelectedRows();
int min = table_.getRows().getLength();
int max = -1;
if (selectedRows_.size() > 0) {
min = selectedRows_.get(0).getRowIndex();
max = selectedRows_.get(selectedRows_.size() - 1).getRowIndex();
}
switch (event.getNativeKeyCode()) {
case KeyCodes.KEY_UP:
{
Integer row = findNextValueRow(min, true);
if (row != null) {
if (modifiers != KeyboardShortcut.SHIFT) clearSelection();
setSelectedPhysical(row, 1, true);
ensureRowVisible(row);
}
break;
}
case KeyCodes.KEY_DOWN:
{
Integer row = findNextValueRow(max, false);
if (row != null) {
if (modifiers != KeyboardShortcut.SHIFT) clearSelection();
setSelectedPhysical(row, 1, true);
ensureRowVisible(row);
}
break;
}
}
}
public void onKeyDown(KeyDownEvent event) {
int keyCode = event.getNativeKeyCode();
for (KeyDownPreviewHandler handler : keyDownPreviewHandlers_) {
if (handler.previewKeyDown(event.getNativeEvent())) {
event.preventDefault();
event.stopPropagation();
return;
}
}
if (event.getNativeKeyCode() == KeyCodes.KEY_TAB) event.preventDefault();
int modifiers = KeyboardShortcut.getModifierValue(event.getNativeEvent());
if (event.isUpArrow() && modifiers == 0) {
if ((input_.getCurrentLineNum() == 0) || input_.isCursorAtEnd()) {
event.preventDefault();
event.stopPropagation();
navigateHistory(-1);
}
} else if (event.isDownArrow() && modifiers == 0) {
if ((input_.getCurrentLineNum() == input_.getCurrentLineCount() - 1)
|| input_.isCursorAtEnd()) {
event.preventDefault();
event.stopPropagation();
navigateHistory(1);
}
} else if (keyCode == KeyCodes.KEY_ENTER && modifiers == 0) {
event.preventDefault();
event.stopPropagation();
restoreFocus_ = true;
processCommandEntry();
} else if (keyCode == KeyCodes.KEY_ESCAPE && modifiers == 0) {
event.preventDefault();
if (input_.getText().length() == 0) {
// view_.isPromptEmpty() is to check for cases where the
// server is prompting but not at the top level. Escape
// needs to send null in those cases.
// For example, try "scan()" function
if (view_.isPromptEmpty()) {
// interrupt server
server_.interrupt(
new VoidServerRequestCallback() {
@Override
public void onError(ServerError error) {
super.onError(error);
globalDisplay_.showErrorMessage(
"Error Interrupting Server", error.getUserMessage());
}
});
} else {
// if the input is already empty then send a console reset
// which will jump us back to the main prompt
eventBus_.fireEvent(new ConsoleInputEvent(null));
}
}
input_.clear();
} else {
int mod = KeyboardShortcut.getModifierValue(event.getNativeEvent());
if (mod == KeyboardShortcut.CTRL) {
switch (keyCode) {
case 'L':
Shell.this.onConsoleClear();
event.preventDefault();
break;
}
} else if (mod == KeyboardShortcut.ALT) {
switch (keyCode) {
case 189: // hyphen
event.preventDefault();
event.stopPropagation();
input_.replaceSelection(" <- ", true);
break;
}
} else if ((BrowseCap.hasMetaKey()
&& (mod == (KeyboardShortcut.META + KeyboardShortcut.SHIFT)))
|| (!BrowseCap.hasMetaKey()
&& (mod == (KeyboardShortcut.CTRL + KeyboardShortcut.SHIFT)))) {
switch (keyCode) {
case KeyCodes.KEY_M:
event.preventDefault();
event.stopPropagation();
input_.replaceSelection(" %>% ", true);
break;
}
}
}
}