* @author Kevin Lamonte [kevin.lamonte@gmail.com]
* @version 1
*/
-package jexer;
+package jexer.ttree;
import java.util.ArrayList;
import java.util.List;
+import jexer.TWidget;
import jexer.bits.CellAttributes;
import jexer.bits.GraphicsChars;
import jexer.event.TKeypressEvent;
*/
public class TTreeItem extends TWidget {
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Hang onto reference to my parent TTreeView so I can call its reflow()
* when I add a child node.
*/
private TTreeView view;
- /**
- * Get the parent TTreeView.
- *
- * @return the parent TTreeView
- */
- public final TTreeView getTreeView() {
- return view;
- }
-
/**
* Displayable text for this item.
*/
private String text;
- /**
- * Get the displayable text for this item.
- *
- * @return the displayable text for this item
- */
- public final String getText() {
- return text;
- }
-
- /**
- * Set the displayable text for this item.
- *
- * @param text the displayable text for this item
- */
- public final void setText(final String text) {
- this.text = text;
- }
-
/**
* If true, this item is expanded in the tree view.
*/
private boolean expanded = true;
- /**
- * Get expanded value.
- *
- * @return if true, this item is expanded
- */
- public final boolean isExpanded() {
- return expanded;
- }
-
- /**
- * Set expanded value.
- *
- * @param expanded new value
- */
- public final void setExpanded(final boolean expanded) {
- this.expanded = expanded;
- }
-
/**
* If true, this item can be expanded in the tree view.
*/
private boolean expandable = false;
- /**
- * Get expandable value.
- *
- * @return if true, this item is expandable
- */
- public final boolean isExpandable() {
- return expandable;
- }
-
- /**
- * Set expandable value.
- *
- * @param expandable new value
- */
- public final void setExpandable(final boolean expandable) {
- this.expandable = expandable;
- }
-
/**
* The vertical bars and such along the left side.
*/
private String prefix = "";
/**
- * Get the vertical bars and such along the left side.
- *
- * @return the vertical bars and such along the left side
+ * Tree level.
*/
- public final String getPrefix() {
- return prefix;
- }
-
- /**
- * Whether or not this item is last in its parent's list of children.
- */
- private boolean last = false;
-
- /**
- * Tree level. Note package private access.
- */
- int level = 0;
-
- /**
- * If true, this item will not be drawn.
- */
- private boolean invisible = false;
-
- /**
- * Set invisible value.
- *
- * @param invisible new value
- */
- public final void setInvisible(final boolean invisible) {
- this.invisible = invisible;
- }
+ protected int level = 0;
/**
* True means selected.
*/
private boolean selected = false;
- /**
- * Get selected value.
- *
- * @return if true, this item is selected
- */
- public final boolean isSelected() {
- return selected;
- }
-
- /**
- * Set selected value.
- *
- * @param selected new value
- */
- public final void setSelected(final boolean selected) {
- this.selected = selected;
- }
-
/**
* True means select-able.
*/
private boolean selectable = true;
/**
- * Set selectable value.
- *
- * @param selectable new value
+ * Whether or not this item is last in its parent's list of children.
*/
- public final void setSelectable(final boolean selectable) {
- this.selectable = selectable;
- }
+ private boolean last = false;
/**
* Pointer to the previous keyboard-navigable item (kbUp). Note package
*/
TTreeItem keyboardNext = null;
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Public constructor.
*
final boolean expanded) {
super(view, 0, 0, view.getWidth() - 3, 1);
+
this.text = text;
this.expanded = expanded;
this.view = view;
if (view.getTreeRoot() == null) {
- view.setTreeRoot(this, true);
- }
-
- view.reflowData();
- }
-
- /**
- * Add a child item.
- *
- * @param text text for this item
- * @return the new child item
- */
- public TTreeItem addChild(final String text) {
- return addChild(text, true);
- }
-
- /**
- * Add a child item.
- *
- * @param text text for this item
- * @param expanded if true, have it expanded immediately
- * @return the new child item
- */
- public TTreeItem addChild(final String text, final boolean expanded) {
- TTreeItem item = new TTreeItem(view, text, expanded);
- item.level = this.level + 1;
- getChildren().add(item);
- view.reflowData();
- return item;
- }
-
- /**
- * Recursively expand the tree into a linear array of items.
- *
- * @param prefix vertical bar of parent levels and such that is set on
- * each child
- * @param last if true, this is the "last" leaf node of a tree
- * @return additional items to add to the array
- */
- public List<TTreeItem> expandTree(final String prefix, final boolean last) {
- List<TTreeItem> array = new ArrayList<TTreeItem>();
- this.last = last;
- this.prefix = prefix;
- array.add(this);
-
- if ((getChildren().size() == 0) || !expanded) {
- return array;
- }
-
- String newPrefix = prefix;
- if (level > 0) {
- if (last) {
- newPrefix += " ";
- } else {
- newPrefix += GraphicsChars.CP437[0xB3];
- newPrefix += ' ';
- }
- }
- for (int i = 0; i < getChildren().size(); i++) {
- TTreeItem item = (TTreeItem) getChildren().get(i);
- if (i == getChildren().size() - 1) {
- array.addAll(item.expandTree(newPrefix, true));
- } else {
- array.addAll(item.expandTree(newPrefix, false));
- }
- }
- return array;
- }
-
- /**
- * Get the x spot for the + or - to expand/collapse.
- *
- * @return column of the expand/collapse button
- */
- private int getExpanderX() {
- if ((level == 0) || (!expandable)) {
- return 0;
+ view.setTreeRoot(this);
+ } else {
+ view.alignTree();
}
- return prefix.length() + 3;
}
- /**
- * Recursively unselect my or my children.
- */
- public void unselect() {
- if (selected == true) {
- selected = false;
- view.setSelected(null);
- }
- for (TWidget widget: getChildren()) {
- if (widget instanceof TTreeItem) {
- TTreeItem item = (TTreeItem) widget;
- item.unselect();
- }
- }
- }
+ // ------------------------------------------------------------------------
+ // Event handlers ---------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Handle mouse release events.
*/
@Override
public void onMouseUp(final TMouseEvent mouse) {
- if ((mouse.getX() == (getExpanderX() - view.getHorizontalValue()))
+ if ((mouse.getX() == (getExpanderX() - view.getLeftColumn()))
&& (mouse.getY() == 0)
) {
+ if (level == 0) {
+ // Root node can't switch.
+ return;
+ }
if (selectable) {
// Flip expanded flag
expanded = !expanded;
// Unselect children that became invisible
unselect();
}
+ view.setSelected(this, false);
}
// Let subclasses do something with this
onExpand();
+
+ // Update the screen after any thing has expanded/contracted
+ view.alignTree();
} else if (mouse.getY() == 0) {
- view.setSelected(this);
+ // Do the action associated with this item.
+ view.setSelected(this, false);
view.dispatch();
}
-
- // Update the screen after any thing has expanded/contracted
- view.reflowData();
}
/**
|| keypress.equals(kbRight)
|| keypress.equals(kbSpace)
) {
+ if (level == 0) {
+ // Root node can't switch.
+ return;
+ }
if (selectable) {
// Flip expanded flag
expanded = !expanded;
// Unselect children that became invisible
unselect();
}
- view.setSelected(this);
+ view.setSelected(this, false);
}
// Let subclasses do something with this
onExpand();
+ } else if (keypress.equals(kbEnter)) {
+ // Do the action associated with this item.
+ view.dispatch();
} else {
// Pass other keys (tab etc.) on to TWidget's handler.
super.onKeypress(keypress);
}
}
+ // ------------------------------------------------------------------------
+ // TWidget ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Draw this item to a window.
*/
@Override
public void draw() {
- if (invisible) {
+ if ((getY() < 0) || (getY() > getParent().getHeight() - 1)) {
return;
}
- int offset = -view.getHorizontalValue();
+ int offset = -view.getLeftColumn();
CellAttributes color = getTheme().getColor("ttreeview");
CellAttributes textColor = getTheme().getColor("ttreeview");
if (!getParent().isAbsoluteActive()) {
color = getTheme().getColor("ttreeview.inactive");
textColor = getTheme().getColor("ttreeview.inactive");
+ selectedColor = getTheme().getColor("ttreeview.selected.inactive");
}
if (!selectable) {
line += GraphicsChars.CP437[0xC4];
if (expandable) {
line += "[ ] ";
+ } else {
+ line += " ";
}
}
getScreen().putStringXY(offset, 0, line, color);
}
}
+ // ------------------------------------------------------------------------
+ // TTreeItem --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get the parent TTreeView.
+ *
+ * @return the parent TTreeView
+ */
+ public final TTreeView getTreeView() {
+ return view;
+ }
+
+ /**
+ * Get the displayable text for this item.
+ *
+ * @return the displayable text for this item
+ */
+ public final String getText() {
+ return text;
+ }
+
+ /**
+ * Set the displayable text for this item.
+ *
+ * @param text the displayable text for this item
+ */
+ public final void setText(final String text) {
+ this.text = text;
+ }
+
+ /**
+ * Get expanded value.
+ *
+ * @return if true, this item is expanded
+ */
+ public final boolean isExpanded() {
+ return expanded;
+ }
+
+ /**
+ * Set expanded value.
+ *
+ * @param expanded new value
+ */
+ public final void setExpanded(final boolean expanded) {
+ if (level == 0) {
+ // Root node can't be unexpanded, ever.
+ this.expanded = true;
+ return;
+ }
+ if (level > 0) {
+ this.expanded = expanded;
+ }
+ }
+
+ /**
+ * Get expandable value.
+ *
+ * @return if true, this item is expandable
+ */
+ public final boolean isExpandable() {
+ return expandable;
+ }
+
+ /**
+ * Set expandable value.
+ *
+ * @param expandable new value
+ */
+ public final void setExpandable(final boolean expandable) {
+ if (level == 0) {
+ // Root node can't be unexpanded, ever.
+ this.expandable = true;
+ return;
+ }
+ if (level > 0) {
+ this.expandable = expandable;
+ }
+ }
+
+ /**
+ * Get the vertical bars and such along the left side.
+ *
+ * @return the vertical bars and such along the left side
+ */
+ public final String getPrefix() {
+ return prefix;
+ }
+
+ /**
+ * Get selected value.
+ *
+ * @return if true, this item is selected
+ */
+ public final boolean isSelected() {
+ return selected;
+ }
+
+ /**
+ * Set selected value.
+ *
+ * @param selected new value
+ */
+ public final void setSelected(final boolean selected) {
+ this.selected = selected;
+ }
+
+ /**
+ * Set selectable value.
+ *
+ * @param selectable new value
+ */
+ public final void setSelectable(final boolean selectable) {
+ this.selectable = selectable;
+ }
+
+ /**
+ * Get the length of the widest item to display.
+ *
+ * @return the maximum number of columns for this item or its children
+ */
+ public int getMaximumColumn() {
+ int max = prefix.length() + 4 + text.length();
+ for (TWidget widget: getChildren()) {
+ TTreeItem item = (TTreeItem) widget;
+ int n = item.prefix.length() + 4 + item.text.length();
+ if (n > max) {
+ max = n;
+ }
+ }
+ return max;
+ }
+
+ /**
+ * Recursively expand the tree into a linear array of items.
+ *
+ * @param prefix vertical bar of parent levels and such that is set on
+ * each child
+ * @param last if true, this is the "last" leaf node of a tree
+ * @return additional items to add to the array
+ */
+ public List<TTreeItem> expandTree(final String prefix, final boolean last) {
+ List<TTreeItem> array = new ArrayList<TTreeItem>();
+ this.last = last;
+ this.prefix = prefix;
+ array.add(this);
+
+ if ((getChildren().size() == 0) || !expanded) {
+ return array;
+ }
+
+ String newPrefix = prefix;
+ if (level > 0) {
+ if (last) {
+ newPrefix += " ";
+ } else {
+ newPrefix += GraphicsChars.CP437[0xB3];
+ newPrefix += ' ';
+ }
+ }
+ for (int i = 0; i < getChildren().size(); i++) {
+ TTreeItem item = (TTreeItem) getChildren().get(i);
+ if (i == getChildren().size() - 1) {
+ array.addAll(item.expandTree(newPrefix, true));
+ } else {
+ array.addAll(item.expandTree(newPrefix, false));
+ }
+ }
+ return array;
+ }
+
+ /**
+ * Get the x spot for the + or - to expand/collapse.
+ *
+ * @return column of the expand/collapse button
+ */
+ private int getExpanderX() {
+ if ((level == 0) || (!expandable)) {
+ return 0;
+ }
+ return prefix.length() + 3;
+ }
+
+ /**
+ * Recursively unselect me and my children.
+ */
+ public void unselect() {
+ if (selected == true) {
+ selected = false;
+ view.setSelected(null, false);
+ }
+ for (TWidget widget: getChildren()) {
+ if (widget instanceof TTreeItem) {
+ TTreeItem item = (TTreeItem) widget;
+ item.unselect();
+ }
+ }
+ }
+
}
git://git.nikiroo.be / fanfix.git / blobdiff