Author: gclayton
Date: Tue Oct 13 18:16:29 2015
New Revision: 250248
URL: http://llvm.org/viewvc/llvm-project?rev=250248&view=rev
Log:
Added tree panels.
Modified:
lldb/trunk/test/lldbcurses.py
Modified: lldb/trunk/test/lldbcurses.py
URL:
http://llvm.org/viewvc/llvm-project/lldb/trunk/test/lldbcurses.py?rev=250248&r1=250247&r2=250248&view=diff
==============================================================================
--- lldb/trunk/test/lldbcurses.py (original)
+++ lldb/trunk/test/lldbcurses.py Tue Oct 13 18:16:29 2015
@@ -89,7 +89,17 @@ class Window(object):
self.key_actions[key_integer] = key_action_dict
else:
raise ValueError
-
+
+ def draw_title_box(self, title):
+ is_in_first_responder_chain = self.is_in_first_responder_chain()
+ if is_in_first_responder_chain:
+ self.attron (curses.A_REVERSE)
+ self.box()
+ if is_in_first_responder_chain:
+ self.attroff (curses.A_REVERSE)
+ if title:
+ self.addstr(Point(x=2, y=0), ' ' + title + ' ')
+
def remove_child(self, window):
self.children.remove(window)
@@ -187,7 +197,13 @@ class Window(object):
size = self.get_size()
return pt.x >= 0 and pt.x < size.w and pt.y >= 0 and pt.y < size.h
- def addch(self, pt, c):
+ def addch(self, c):
+ try:
+ self.window.addch(c)
+ except:
+ pass
+
+ def addch_at_point(self, pt, c):
try:
self.window.addch(pt.y, pt.x, c)
except:
@@ -199,11 +215,16 @@ class Window(object):
except:
pass
- def addnstr(self, pt, str, n):
+ def addnstr_at_point(self, pt, str, n):
try:
self.window.addnstr(pt.y, pt.x, str, n)
except:
pass
+ def addnstr(self, str, n):
+ try:
+ self.window.addnstr(str, n)
+ except:
+ pass
def attron(self, attr):
return self.window.attron (attr)
@@ -235,6 +256,10 @@ class Window(object):
def erase(self):
self.window.erase()
+
+ def get_cursor(self):
+ (y, x) = self.window.getyx()
+ return Point(x=x, y=y)
def get_frame(self):
position = self.get_position()
@@ -249,9 +274,13 @@ class Window(object):
(y, x) = self.window.getmaxyx()
return Size(w=x, h=y)
+ def move(self, pt):
+ self.window.move(pt.y, pt.x)
+
def refresh(self):
self.update()
curses.panel.update_panels()
+ self.move(Point(x=0, y=0))
return self.window.refresh()
def resize(self, size):
@@ -475,15 +504,8 @@ class BoxedPanel(Panel):
self.update()
def update(self):
- self.erase()
- is_in_first_responder_chain = self.is_in_first_responder_chain()
- if is_in_first_responder_chain:
- self.attron (curses.A_REVERSE)
- self.box()
- if is_in_first_responder_chain:
- self.attroff (curses.A_REVERSE)
- if self.title:
- self.addstr(Point(x=2, y=0), ' ' + self.title + ' ')
+ self.erase()
+ self.draw_title_box(self.title)
max_width = self.get_usable_width()
for line_idx in range(self.first_visible_idx, len(self.lines)):
pt = self.get_point_for_line(line_idx)
@@ -491,7 +513,7 @@ class BoxedPanel(Panel):
is_selected = line_idx == self.selected_idx
if is_selected:
self.attron (curses.A_REVERSE)
- self.addnstr(pt, self.lines[line_idx], max_width)
+ self.addnstr_at_point(pt, self.lines[line_idx], max_width)
if is_selected:
self.attroff (curses.A_REVERSE)
else:
@@ -501,7 +523,251 @@ class Item(object):
def __init__(self, title, action):
self.title = title
self.action = action
+
+class TreeItem(object):
+ def __init__(self, delegate, parent = None, title = None, action = None,
is_expanded = False):
+ self.parent = parent
+ self.title = title
+ self.action = action
+ self.delegate = delegate
+ self.is_expanded = not parent or is_expanded == True
+ self.might_have_children_value = None
+ self.children = None
+
+ def get_children(self):
+ if self.is_expanded and self.might_have_children():
+ if self.children is None:
+ self.children = self.update_children()
+ else:
+ self.children = None
+ return self.children
+
+ def append_visible_items(self, items):
+ items.append(self)
+ children = self.get_children()
+ if children:
+ for child in children:
+ child.append_visible_items(items)
+
+ def might_have_children(self):
+ if self.might_have_children_value is None:
+ if not self.parent:
+ # Root item always might have children
+ self.might_have_children_value = True
+ else:
+ # Check with the delegate to see if the item might have
children
+ self.might_have_children_value =
self.delegate.might_have_children()
+ return self.might_have_children_value
+
+ def update_children(self):
+ if self.is_expanded and self.might_have_children():
+ self.children = self.delegate.update_children(self)
+ for child in self.children:
+ child.update_children()
+ else:
+ self.children = None
+ return self.children
+
+ def get_num_visible_rows(self):
+ rows = 1
+ if self.is_expanded:
+ children = self.get_children()
+ for child in children:
+ rows += child.get_num_visible_rows()
+ return rows
+ def draw(self, tree_window, row):
+ display_row = tree_window.get_display_row(row)
+ if display_row >= 0:
+ tree_window.move(tree_window.get_item_draw_point(row))
+ if self.parent:
+ self.parent.draw_tree_for_child(tree_window, self, 0)
+ if self.might_have_children():
+ tree_window.addch (curses.ACS_DIAMOND)
+ tree_window.addch (curses.ACS_HLINE)
+
+ is_selected = tree_window.is_selected(row)
+ if is_selected:
+ tree_window.attron (curses.A_REVERSE)
+ self.delegate.draw_item(tree_window, self)
+ if is_selected:
+ tree_window.attroff (curses.A_REVERSE)
+
+ def draw_tree_for_child (self, tree_window, child, reverse_depth):
+ if self.parent:
+ self.parent.draw_tree_for_child (tree_window, self, reverse_depth
+ 1)
+ if self.children[-1] == child:
+ # Last child
+ if reverse_depth == 0:
+ tree_window.addch (curses.ACS_LLCORNER)
+ tree_window.addch (curses.ACS_HLINE)
+ else:
+ tree_window.addch (' ')
+ tree_window.addch (' ')
+ else:
+ # Middle child
+ if reverse_depth == 0:
+ tree_window.addch (curses.ACS_LTEE)
+ tree_window.addch (curses.ACS_HLINE)
+ else:
+ tree_window.addch (curses.ACS_VLINE)
+ tree_window.addch (' ')
+
+ def was_selected(self):
+ pass
+
+class TreePanel(Panel):
+ def __init__(self, frame, title, root_item):
+ self.root_item = root_item
+ self.title = title
+ self.first_visible_idx = 0
+ self.selected_idx = 0
+ self.items = None
+ super(TreePanel, self).__init__(frame)
+ self.add_key_action(curses.KEY_UP, self.select_prev, "Select the
previous item")
+ self.add_key_action(curses.KEY_DOWN, self.select_next, "Select the
next item")
+ self.add_key_action(curses.KEY_RIGHT,self.right_arrow, "Expand an
item")
+ self.add_key_action(curses.KEY_LEFT, self.left_arrow, "Unexpand an
item or navigate to parent")
+ self.add_key_action(curses.KEY_HOME, self.scroll_begin, "Go to the
beginning of the list")
+ self.add_key_action(curses.KEY_END, self.scroll_end, "Go to the end
of the list")
+ self.add_key_action(curses.KEY_PPAGE, self.scroll_page_backward,
"Scroll to previous page")
+ self.add_key_action(curses.KEY_NPAGE, self.scroll_page_forward,
"Scroll to next forward")
+
+ def get_selected_item(self):
+ if self.selected_idx < len(self.items):
+ return self.items[self.selected_idx]
+ else:
+ return None
+ def select_item(self, item):
+ if self.items and item in self.items:
+ self.selected_idx = self.items.index(item)
+ return True
+ else:
+ return False
+
+ def get_visible_items(self):
+ # Clear self.items when you want to update all chidren
+ if self.items is None:
+ self.items = list()
+ children = self.root_item.get_children()
+ if children:
+ for child in children:
+ child.append_visible_items(self.items)
+ return self.items
+
+ def update(self):
+ self.erase()
+ self.draw_title_box(self.title)
+ visible_items = self.get_visible_items()
+ for (row, child) in enumerate(visible_items):
+ child.draw(self, row)
+
+ def get_item_draw_point(self, row):
+ display_row = self.get_display_row(row)
+ if display_row >= 0:
+ return Point(2, display_row + 1)
+ else:
+ return Point(-1, -1)
+
+ def get_display_row(self, row):
+ if row >= self.first_visible_idx:
+ display_row = row - self.first_visible_idx
+ if display_row < self.get_size().h-2:
+ return display_row
+ return -1
+
+ def is_selected(self, row):
+ return row == self.selected_idx
+
+ def get_num_lines(self):
+ rows = 0
+ children = self.root_item.get_children()
+ for child in children:
+ rows += child.get_num_visible_rows()
+ return rows
+
+ def get_num_visible_lines(self):
+ return self.get_size().h-2
+ def select_next (self):
+ self.selected_idx += 1
+ num_lines = self.get_num_lines()
+ if self.selected_idx >= num_lines:
+ self.selected_idx = num_lines - 1
+ self.refresh()
+
+ def select_prev (self):
+ self.selected_idx -= 1
+ if self.selected_idx < 0:
+ num_lines = self.get_num_lines()
+ if num_lines > 0:
+ self.selected_idx = 0
+ else:
+ self.selected_idx = -1
+ self.refresh()
+
+ def scroll_begin (self):
+ self.first_visible_idx = 0
+ num_lines = self.get_num_lines()
+ if num_lines > 0:
+ self.selected_idx = 0
+ else:
+ self.selected_idx = -1
+ self.update()
+
+ def redisplay_tree(self):
+ self.items = None
+ self.refresh()
+
+ def right_arrow(self):
+ selected_item = self.get_selected_item()
+ if selected_item and selected_item.is_expanded == False:
+ selected_item.is_expanded = True
+ self.redisplay_tree()
+
+ def left_arrow(self):
+ selected_item = self.get_selected_item()
+ if selected_item:
+ if selected_item.is_expanded == True:
+ selected_item.is_expanded = False
+ self.redisplay_tree()
+ elif selected_item.parent:
+ if self.select_item(selected_item.parent):
+ self.refresh()
+
+
+ def scroll_end (self):
+ num_visible_lines = self.get_num_visible_lines()
+ num_lines = len(self.lines)
+ if num_lines > num_visible_lines:
+ self.first_visible_idx = num_lines - num_visible_lines
+ else:
+ self.first_visible_idx = 0
+ self.selected_idx = num_lines-1
+ self.update()
+
+ def scroll_page_backward(self):
+ num_visible_lines = self.get_num_visible_lines()
+ new_index = self.first_visible_idx - num_visible_lines
+ if new_index < 0:
+ self.first_visible_idx = 0
+ else:
+ self.first_visible_idx = new_index
+ self.refresh()
+
+ def scroll_page_forward(self):
+ num_visible_lines = self.get_num_visible_lines()
+ self.first_visible_idx += num_visible_lines
+ self._adjust_first_visible_line()
+ self.refresh()
+
+ def _adjust_first_visible_line(self):
+ num_lines = len(self.lines)
+ num_visible_lines = self.get_num_visible_lines()
+ if (self.first_visible_idx >= num_lines) or (num_lines -
self.first_visible_idx) > num_visible_lines:
+ self.first_visible_idx = num_lines - num_visible_lines
+
+
+
class Menu(BoxedPanel):
def __init__(self, title, items):
max_title_width = 0
@@ -632,7 +898,7 @@ class MenuBar(Panel):
self.addstr(pt, '|')
width = self.get_size().w
while pt.x < width:
- self.addch(pt, ' ')
+ self.addch_at_point(pt, ' ')
pt.x += 1
if is_in_first_responder_chain:
self.attroff (curses.A_REVERSE)
@@ -680,7 +946,7 @@ class StatusPanel(Panel):
def update(self):
self.erase();
for status_item_dict in self.status_items:
- self.addnstr(Point(x=status_item_dict['x'], y=0), '%s: %s' %
(status_item_dict['title'], status_item_dict['value']),
status_item_dict['width'])
+ self.addnstr_at_point(Point(x=status_item_dict['x'], y=0), '%s:
%s' % (status_item_dict['title'], status_item_dict['value']),
status_item_dict['width'])
stdscr = None
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