| # A minimal text editor using MLTE. Based on wed.py. |
| # |
| # To be done: |
| # - Functionality: find, etc. |
| |
| from Menu import DrawMenuBar |
| from FrameWork import * |
| from Carbon import Win |
| from Carbon import Ctl |
| from Carbon import Qd |
| from Carbon import Res |
| from Carbon import Scrap |
| import os |
| import macfs |
| from Carbon import MacTextEditor |
| from Carbon import Mlte |
| |
| UNDOLABELS = [ # Indexed by MLTECanUndo() value |
| "Typing", "Cut", "Paste", "Clear", "Font Change", "Color Change", "Size Change", |
| "Style Change", "Align Left", "Align Center", "Align Right", "Drop", "Move"] |
| |
| class MlteWindow(Window): |
| def open(self, path, name, data): |
| self.path = path |
| self.name = name |
| r = windowbounds(400, 400) |
| w = Win.NewWindow(r, name, 1, 0, -1, 1, 0) |
| self.wid = w |
| flags = MacTextEditor.kTXNDrawGrowIconMask|MacTextEditor.kTXNWantHScrollBarMask| \ |
| MacTextEditor.kTXNWantVScrollBarMask |
| self.ted, self.frameid = Mlte.TXNNewObject(None, w, None, flags, MacTextEditor.kTXNTextEditStyleFrameType, |
| MacTextEditor.kTXNTextFile, MacTextEditor.kTXNMacOSEncoding) |
| self.ted.TXNSetData(MacTextEditor.kTXNTextData, data, 0, 0x7fffffff) |
| self.changed = 0 |
| self.do_postopen() |
| self.do_activate(1, None) |
| |
| def do_idle(self, event): |
| self.ted.TXNIdle() |
| self.ted.TXNAdjustCursor(None) |
| |
| |
| |
| def do_activate(self, onoff, evt): |
| if onoff: |
| ## self.ted.TXNActivate(self.frameid, 0) |
| self.ted.TXNFocus(1) |
| self.parent.active = self |
| else: |
| self.ted.TXNFocus(0) |
| self.parent.active = None |
| self.parent.updatemenubar() |
| |
| def do_update(self, wid, event): |
| self.ted.TXNDraw(None) |
| |
| def do_postresize(self, width, height, window): |
| self.ted.TXNResizeFrame(width, height, self.frameid) |
| |
| def do_contentclick(self, local, modifiers, evt): |
| self.ted.TXNClick(evt) |
| self.parent.updatemenubar() |
| |
| def do_char(self, ch, event): |
| self.ted.TXNKeyDown(event) |
| self.parent.updatemenubar() |
| |
| def close(self): |
| if self.changed: |
| save = EasyDialogs.AskYesNoCancel('Save window "%s" before closing?'%self.name, 1) |
| if save > 0: |
| self.menu_save() |
| elif save < 0: |
| return |
| if self.parent.active == self: |
| self.parent.active = None |
| self.ted.TXNDeleteObject() |
| del self.ted |
| ## del self.tedtexthandle |
| self.do_postclose() |
| |
| def menu_save(self): |
| if not self.path: |
| self.menu_save_as() |
| return # Will call us recursively |
| dhandle = self.ted.TXNGetData(0, 0x7fffffff) |
| data = dhandle.data |
| fp = open(self.path, 'wb') # NOTE: wb, because data has CR for end-of-line |
| fp.write(data) |
| if data[-1] <> '\r': fp.write('\r') |
| fp.close() |
| self.changed = 0 |
| |
| def menu_save_as(self): |
| fss, ok = macfs.StandardPutFile('Save as:') |
| if not ok: return |
| self.path = fss.as_pathname() |
| self.name = os.path.split(self.path)[-1] |
| self.wid.SetWTitle(self.name) |
| self.menu_save() |
| |
| def menu_cut(self): |
| ## self.ted.WESelView() |
| self.ted.TXNCut() |
| ### Mlte.ConvertToPublicScrap() |
| ## Scrap.ZeroScrap() |
| ## self.ted.WECut() |
| ## self.updatescrollbars() |
| self.parent.updatemenubar() |
| self.changed = 1 |
| |
| def menu_copy(self): |
| ## Scrap.ZeroScrap() |
| self.ted.TXNCopy() |
| ### Mlte.ConvertToPublicScrap() |
| ## self.updatescrollbars() |
| self.parent.updatemenubar() |
| |
| def menu_paste(self): |
| ### Mlte.ConvertFromPublicScrap() |
| self.ted.TXNPaste() |
| ## self.updatescrollbars() |
| self.parent.updatemenubar() |
| self.changed = 1 |
| |
| def menu_clear(self): |
| ## self.ted.WESelView() |
| self.ted.TXNClear() |
| ## self.updatescrollbars() |
| self.parent.updatemenubar() |
| self.changed = 1 |
| |
| def menu_undo(self): |
| self.ted.TXNUndo() |
| ## self.updatescrollbars() |
| self.parent.updatemenubar() |
| |
| def menu_redo(self): |
| self.ted.TXNRedo() |
| ## self.updatescrollbars() |
| self.parent.updatemenubar() |
| |
| def have_selection(self): |
| start, stop = self.ted.TXNGetSelection() |
| return start < stop |
| |
| def can_paste(self): |
| return Mlte.TXNIsScrapPastable() |
| |
| def can_undo(self): |
| can, which = self.ted.TXNCanUndo() |
| if not can: |
| return None |
| if which >= len(UNDOLABELS): |
| # Unspecified undo |
| return "Undo" |
| which = UNDOLABELS[which] |
| |
| return "Undo "+which |
| |
| def can_redo(self): |
| can, which = self.ted.TXNCanRedo() |
| if not can: |
| return None |
| if which >= len(UNDOLABELS): |
| # Unspecified undo |
| return "Redo" |
| which = UNDOLABELS[which] |
| |
| return "Redo "+which |
| |
| class Mlted(Application): |
| def __init__(self): |
| Application.__init__(self) |
| self.num = 0 |
| self.active = None |
| self.updatemenubar() |
| |
| def makeusermenus(self): |
| self.filemenu = m = Menu(self.menubar, "File") |
| self.newitem = MenuItem(m, "New window", "N", self.open) |
| self.openitem = MenuItem(m, "Open...", "O", self.openfile) |
| self.closeitem = MenuItem(m, "Close", "W", self.closewin) |
| m.addseparator() |
| self.saveitem = MenuItem(m, "Save", "S", self.save) |
| self.saveasitem = MenuItem(m, "Save as...", "", self.saveas) |
| m.addseparator() |
| self.quititem = MenuItem(m, "Quit", "Q", self.quit) |
| |
| self.editmenu = m = Menu(self.menubar, "Edit") |
| self.undoitem = MenuItem(m, "Undo", "Z", self.undo) |
| self.redoitem = MenuItem(m, "Redo", None, self.redo) |
| m.addseparator() |
| self.cutitem = MenuItem(m, "Cut", "X", self.cut) |
| self.copyitem = MenuItem(m, "Copy", "C", self.copy) |
| self.pasteitem = MenuItem(m, "Paste", "V", self.paste) |
| self.clearitem = MenuItem(m, "Clear", "", self.clear) |
| |
| # Groups of items enabled together: |
| self.windowgroup = [self.closeitem, self.saveitem, self.saveasitem, self.editmenu] |
| self.focusgroup = [self.cutitem, self.copyitem, self.clearitem] |
| self.windowgroup_on = -1 |
| self.focusgroup_on = -1 |
| self.pastegroup_on = -1 |
| self.undo_label = "never" |
| self.redo_label = "never" |
| |
| def updatemenubar(self): |
| changed = 0 |
| on = (self.active <> None) |
| if on <> self.windowgroup_on: |
| for m in self.windowgroup: |
| m.enable(on) |
| self.windowgroup_on = on |
| changed = 1 |
| if on: |
| # only if we have an edit menu |
| on = self.active.have_selection() |
| if on <> self.focusgroup_on: |
| for m in self.focusgroup: |
| m.enable(on) |
| self.focusgroup_on = on |
| changed = 1 |
| on = self.active.can_paste() |
| if on <> self.pastegroup_on: |
| self.pasteitem.enable(on) |
| self.pastegroup_on = on |
| changed = 1 |
| on = self.active.can_undo() |
| if on <> self.undo_label: |
| if on: |
| self.undoitem.enable(1) |
| self.undoitem.settext(on) |
| self.undo_label = on |
| else: |
| self.undoitem.settext("Nothing to undo") |
| self.undoitem.enable(0) |
| changed = 1 |
| on = self.active.can_redo() |
| if on <> self.redo_label: |
| if on: |
| self.redoitem.enable(1) |
| self.redoitem.settext(on) |
| self.redo_label = on |
| else: |
| self.redoitem.settext("Nothing to redo") |
| self.redoitem.enable(0) |
| changed = 1 |
| if changed: |
| DrawMenuBar() |
| |
| # |
| # Apple menu |
| # |
| |
| def do_about(self, id, item, window, event): |
| EasyDialogs.Message("A simple single-font text editor based on MacTextEditor") |
| |
| # |
| # File menu |
| # |
| |
| def open(self, *args): |
| self._open(0) |
| |
| def openfile(self, *args): |
| self._open(1) |
| |
| def _open(self, askfile): |
| if askfile: |
| fss, ok = macfs.StandardGetFile('TEXT') |
| if not ok: |
| return |
| path = fss.as_pathname() |
| name = os.path.split(path)[-1] |
| try: |
| fp = open(path, 'rb') # NOTE binary, we need cr as end-of-line |
| data = fp.read() |
| fp.close() |
| except IOError, arg: |
| EasyDialogs.Message("IOERROR: "+`arg`) |
| return |
| else: |
| path = None |
| name = "Untitled %d"%self.num |
| data = '' |
| w = MlteWindow(self) |
| w.open(path, name, data) |
| self.num = self.num + 1 |
| |
| def closewin(self, *args): |
| if self.active: |
| self.active.close() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def save(self, *args): |
| if self.active: |
| self.active.menu_save() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def saveas(self, *args): |
| if self.active: |
| self.active.menu_save_as() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| |
| def quit(self, *args): |
| for w in self._windows.values(): |
| w.close() |
| if self._windows: |
| return |
| self._quit() |
| |
| # |
| # Edit menu |
| # |
| |
| def undo(self, *args): |
| if self.active: |
| self.active.menu_undo() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def redo(self, *args): |
| if self.active: |
| self.active.menu_redo() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def cut(self, *args): |
| if self.active: |
| self.active.menu_cut() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def copy(self, *args): |
| if self.active: |
| self.active.menu_copy() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def paste(self, *args): |
| if self.active: |
| self.active.menu_paste() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| def clear(self, *args): |
| if self.active: |
| self.active.menu_clear() |
| else: |
| EasyDialogs.Message("No active window?") |
| |
| # |
| # Other stuff |
| # |
| |
| def idle(self, event): |
| if self.active: |
| self.active.do_idle(event) |
| else: |
| Qd.SetCursor(Qd.qd.arrow) |
| |
| def main(): |
| Mlte.TXNInitTextension(0) |
| try: |
| App = Mlted() |
| App.mainloop() |
| finally: |
| Mlte.TXNTerminateTextension() |
| |
| if __name__ == '__main__': |
| main() |
| |