diff options
Diffstat (limited to 'src/editor.py')
| -rw-r--r-- | src/editor.py | 88 |
1 files changed, 72 insertions, 16 deletions
diff --git a/src/editor.py b/src/editor.py index 2bcf7c5..e41412f 100644 --- a/src/editor.py +++ b/src/editor.py @@ -61,6 +61,66 @@ class Jump(): +class Killring(): + ''' + Killring class + ''' + + def __init__(self, limit = 50): + ''' + Constructor + + @param limit:int The maximum size of the killring + ''' + self.killring, self.killmax, self.killptr = [], limit, 0 + + + def add(self, text): + ''' + Add a text to the killring + + @param text:str The text to add + ''' + self.killring.append(text) + if len(self.killring) > self.killmax: + self.killring[:] = self.killring[1:] + + + def is_empty(self): + ''' + Checks if the killring is empty + + @return :bool Whether the killring is empty + ''' + return len(self.killring) == 0 + + + def reset(self): + ''' + Resets the killring pointer + ''' + self.killptr = len(self.killring) - 1 + + + def next(self): + ''' + Get to the next item in the killring + ''' + self.killptr -= 1 + if self.killptr < 0: + self.killptr += len(self.killring) + + + def get(self): + ''' + Gets the current item in the killring + + @return :str The current item in the killring + ''' + return self.killring[self.killptr] + + + class TextArea(): ''' GNU Emacs alike text area @@ -81,7 +141,7 @@ class TextArea(): self.innerleft = len(max(self.fields, key = len)) + 3 self.lines = [TextArea.Line(self, self.fields[y], self.datamap[self.fields[y]], y) for y in range(len(self.fields))] self.areawidth = self.width - self.innerleft - self.left + 1 - self.killring, self.killmax, self.killptr = [], 50, 0 + self.killring = Killring() self.y, self.x, self.offx, self.mark = 0, 0, 0, None self.last_alert, self.last_status, self.alerted = None, None, False @@ -118,6 +178,7 @@ class TextArea(): ''' self.area, self.name, self.text, self.y = area, name, text, y + self.killring = self.area.killring self.jump = lambda x : Jump(self.area.top + self.y, self.area.left + self.area.innerleft + x) @@ -162,9 +223,7 @@ class TextArea(): ''' if self.has_selection(): (a, b) = self.area.get_selection() - self.area.killring.append(self.text[a : b]) - if len(self.area.killring) > self.area.killmax: - self.area.killring[:] = self.area.killring[1:] + self.killring.add(self.text[a : b]) (a, b) = self.area.get_selection(True) text = self.text[self.area.offx:][:self.area.areawidth][a : b] print('%s%s' % (self.jump(a), text), end='') @@ -249,20 +308,17 @@ class TextArea(): return True - def yank(self, resetptr = True): + def yank(self): ''' Yank the text from the top of the killring - @param resetpr:bool Whether to reset the killring's pointer - @return :bool Whether the killring was not empty, and therefor a yank was made + @return :bool Whether the killring was not empty, and therefor a yank was made ''' - if len(self.area.killring) == 0: + if self.killring.is_empty(): return False self.area.mark = None - if resetptr: - self.area.killptr = len(self.area.killring) - 1 - yanked = self.area.killring[self.area.killptr] - self.text = self.text[:self.area.x] + self.area.killring[self.area.killptr] + self.text[self.area.x:] + yanked = self.killring.get() + self.text = self.text[:self.area.x] + yanked + self.text[self.area.x:] self.area.x += len(yanked) if self.area.x > self.area.offx + self.area.areawidth: self.area.offx = len(self.text) - self.area.areawidth @@ -278,15 +334,15 @@ class TextArea(): @return :bool False on failure, which happens if the killring is empty or if the text before the point is not the yanked text ''' - if len(self.area.killring) == 0: + if self.killring.is_empty(): return False - yanked = self.area.killring[self.area.killptr] + yanked = self.killring.get() if self.text[max(self.area.x - len(yanked), 0) : self.area.x] != yanked: return False self.area.mark = self.area.x - len(yanked) self.delete() - self.area.killptr -= 1 - self.yank(self.area.killptr < 0) + self.killring.next() + self.yank() return True |