package com.android.ide.common.layout;
import static com.android.ide.common.layout.LayoutConstants.ANDROID_URI;
+import static com.android.ide.common.layout.LayoutConstants.ATTR_LAYOUT_COLUMN;
import static com.android.ide.common.layout.LayoutConstants.ATTR_LAYOUT_GRAVITY;
+import static com.android.ide.common.layout.LayoutConstants.ATTR_LAYOUT_ROW;
import static com.android.ide.common.layout.LayoutConstants.ATTR_ORIENTATION;
import static com.android.ide.common.layout.LayoutConstants.FQCN_SPACE;
import static com.android.ide.common.layout.LayoutConstants.GRAVITY_VALUE_FILL;
private static final String ACTION_ADD_COL = "_addcol"; //$NON-NLS-1$
private static final String ACTION_REMOVE_COL = "_removecol"; //$NON-NLS-1$
private static final String ACTION_ORIENTATION = "_orientation"; //$NON-NLS-1$
- private static final String ACTION_SHOW_GRID = "_grid"; //$NON-NLS-1$
+ private static final String ACTION_SHOW_STRUCTURE = "_structure"; //$NON-NLS-1$
+ private static final String ACTION_GRID_MODE = "_gridmode"; //$NON-NLS-1$
private static final String ACTION_SNAP = "_snap"; //$NON-NLS-1$
private static final String ACTION_DEBUG = "_debug"; //$NON-NLS-1$
private static final URL ICON_REMOVE_ROW = GridLayoutRule.class.getResource("removerow.png"); //$NON-NLS-1$
private static final URL ICON_ADD_COL = GridLayoutRule.class.getResource("addcol.png"); //$NON-NLS-1$
private static final URL ICON_REMOVE_COL = GridLayoutRule.class.getResource("removecol.png"); //$NON-NLS-1$
- private static final URL ICON_SHOW_GRID = GridLayoutRule.class.getResource("showgrid.png"); //$NON-NLS-1$
+ private static final URL ICON_SHOW_STRUCT = GridLayoutRule.class.getResource("showgrid.png"); //$NON-NLS-1$
+ private static final URL ICON_GRID_MODE = GridLayoutRule.class.getResource("gridmode.png"); //$NON-NLS-1$
private static final URL ICON_SNAP = GridLayoutRule.class.getResource("snap.png"); //$NON-NLS-1$
/**
* Whether the IDE should show diagnostics for debugging the grid layout - including
* spacers visibly in the outline, showing row and column numbers, and so on
*/
- public static boolean sDebugGridLayout = false;
+ public static boolean sDebugGridLayout = CAN_DEBUG;
/** Whether the structure (grid model) should be displayed persistently to the user */
public static boolean sShowStructure = false;
parentNode.editXml("Add/Remove Row/Column", new INodeHandler() {
public void handle(INode n) {
String id = action.getId();
- if (id.equals(ACTION_SHOW_GRID)) {
+ if (id.equals(ACTION_SHOW_STRUCTURE)) {
sShowStructure = !sShowStructure;
- // HACK: ToggleButton controls two flags for now - show grid and
- // grid mode (handling drags in a grid mode)
+ mRulesEngine.redraw();
+ return;
+ } else if (id.equals(ACTION_GRID_MODE)) {
sGridMode = !sGridMode;
-
mRulesEngine.redraw();
return;
} else if (id.equals(ACTION_SNAP)) {
}
};
- // Add Row and Add Column
- actions.add(RuleAction.createSeparator(150));
- actions.add(RuleAction.createAction(ACTION_ADD_COL, "Add Column", actionCallback,
- ICON_ADD_COL, 160, false /* supportsMultipleNodes */));
- actions.add(RuleAction.createAction(ACTION_ADD_ROW, "Add Row", actionCallback,
- ICON_ADD_ROW, 165, false));
+ actions.add(RuleAction.createSeparator(142));
- // Remove Row and Remove Column (if something is selected)
- if (children != null && children.size() > 0) {
- // TODO: Add "Merge Columns" and "Merge Rows" ?
+ actions.add(RuleAction.createToggle(ACTION_GRID_MODE, "Grid Model Mode",
+ sGridMode, actionCallback, ICON_GRID_MODE, 145, false));
- actions.add(RuleAction.createAction(ACTION_REMOVE_COL, "Remove Column",
- actionCallback, ICON_REMOVE_COL, 170, false));
- actions.add(RuleAction.createAction(ACTION_REMOVE_ROW, "Remove Row",
- actionCallback, ICON_REMOVE_ROW, 175, false));
- }
+ // Add and Remove Column actions only apply in Grid Mode
+ if (sGridMode) {
+ // Add Row and Add Column
+ actions.add(RuleAction.createSeparator(150));
+ actions.add(RuleAction.createAction(ACTION_ADD_COL, "Add Column", actionCallback,
+ ICON_ADD_COL, 160, false /* supportsMultipleNodes */));
+ actions.add(RuleAction.createAction(ACTION_ADD_ROW, "Add Row", actionCallback,
+ ICON_ADD_ROW, 165, false));
- actions.add(RuleAction.createSeparator(185));
+ // Remove Row and Remove Column (if something is selected)
+ if (children != null && children.size() > 0) {
+ // TODO: Add "Merge Columns" and "Merge Rows" ?
- actions.add(RuleAction.createToggle(ACTION_SNAP, "Snap to Grid",
- sSnapToGrid, actionCallback, ICON_SNAP, 190, false));
+ actions.add(RuleAction.createAction(ACTION_REMOVE_COL, "Remove Column",
+ actionCallback, ICON_REMOVE_COL, 170, false));
+ actions.add(RuleAction.createAction(ACTION_REMOVE_ROW, "Remove Row",
+ actionCallback, ICON_REMOVE_ROW, 175, false));
+ }
- actions.add(RuleAction.createToggle(ACTION_SHOW_GRID, "Show Structure",
- sShowStructure, actionCallback, ICON_SHOW_GRID, 200, false));
+ actions.add(RuleAction.createSeparator(185));
+ } else {
+ actions.add(RuleAction.createToggle(ACTION_SHOW_STRUCTURE, "Show Structure",
+ sShowStructure, actionCallback, ICON_SHOW_STRUCT, 190, false));
+
+ // Snap to Grid and Show Structure are only relevant in free form mode
+ actions.add(RuleAction.createToggle(ACTION_SNAP, "Snap to Grid",
+ sSnapToGrid, actionCallback, ICON_SNAP, 200, false));
+ }
// Temporary: Diagnostics for GridLayout
if (CAN_DEBUG) {
if (sShowStructure) {
// TODO: Cache the grid
if (view != null) {
- GridLayoutPainter.paintStructure(view, DrawingStyle.GUIDELINE_DASHED,
- parentNode, graphics);
- } else {
- GridLayoutPainter.paintStructure(DrawingStyle.GUIDELINE_DASHED,
- parentNode, graphics, new GridModel(mRulesEngine, parentNode, view));
+ if (GridLayoutPainter.paintStructure(view, DrawingStyle.GUIDELINE_DASHED,
+ parentNode, graphics)) {
+ return;
+ }
}
+ GridLayoutPainter.paintStructure(DrawingStyle.GUIDELINE_DASHED,
+ parentNode, graphics, new GridModel(mRulesEngine, parentNode, view));
} else if (sDebugGridLayout) {
GridLayoutPainter.paintStructure(DrawingStyle.GRID,
parentNode, graphics, new GridModel(mRulesEngine, parentNode, view));
// TBD: Highlight the cells around the selection, and display easy controls
// for for example tweaking the rowspan/colspan of a cell? (but only in grid mode)
}
+
+ /**
+ * Paste into a GridLayout. We have several possible behaviors (and many
+ * more than are listed here):
+ * <ol>
+ * <li> Preserve the current positions of the elements (if pasted from another
+ * canvas, not just XML markup copied from say a web site) and apply those
+ * into the current grid. This might mean "overwriting" (sitting on top of)
+ * existing elements.
+ * <li> Fill available "holes" in the grid.
+ * <li> Lay them out consecutively, row by row, like text.
+ * <li> Some hybrid approach, where I attempt to preserve the <b>relative</b>
+ * relationships (columns/wrapping, spacing between the pasted views etc)
+ * but I append them to the bottom of the layout on one or more new rows.
+ * <li> Try to paste at the current mouse position, if known, preserving the
+ * relative distances between the existing elements there.
+ * </ol>
+ * Attempting to preserve the current position isn't possible right now,
+ * because the clipboard data contains only the textual representation of
+ * the markup. (We'd need to stash position information from a previous
+ * layout render along with the clipboard data).
+ * <p>
+ * Currently, this implementation simply lays out the elements row by row,
+ * approach #3 above.
+ */
+ @Override
+ public void onPaste(INode targetNode, Object targetView, IDragElement[] elements) {
+ DropFeedback feedback = onDropEnter(targetNode, targetView, elements);
+ if (feedback != null) {
+ Rect b = targetNode.getBounds();
+ if (!b.isValid()) {
+ return;
+ }
+
+ Map<String, Pair<String, String>> idMap = getDropIdMap(targetNode, elements,
+ true /* remap id's */);
+
+ for (IDragElement element : elements) {
+ // Skip <Space> elements and only insert the real elements being
+ // copied
+ if (elements.length > 1 && FQCN_SPACE.equals(element.getFqcn())) {
+ continue;
+ }
+
+ String fqcn = element.getFqcn();
+ INode newChild = targetNode.appendChild(fqcn);
+ addAttributes(newChild, element, idMap, DEFAULT_ATTR_FILTER);
+
+ // Ensure that we reset any potential row/column attributes from a different
+ // grid layout being copied from
+ newChild.setAttribute(ANDROID_URI, ATTR_LAYOUT_COLUMN, null);
+ newChild.setAttribute(ANDROID_URI, ATTR_LAYOUT_ROW, null);
+
+ // TODO: Set columnSpans to avoid making these widgets completely
+ // break the layout
+ // Alternatively, I could just lay them all out on subsequent lines
+ // with a column span of columnSpan5
+
+ addInnerElements(newChild, element, idMap);
+ }
+ }
+ }
}
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