| Guido van Rossum | 3b4ca0d | 1998-10-10 18:48:31 +0000 | [diff] [blame] | 1 | import re |
| 2 | import tkSimpleDialog |
| 3 | import tkMessageBox |
| 4 | |
| 5 | class SearchBinding: |
| 6 | |
| 7 | def __init__(self, text): |
| 8 | self.text = text |
| 9 | self.pat = "" |
| 10 | self.prog = None |
| 11 | self.text.bind("<<find>>", self.find_event) |
| 12 | self.text.bind("<<find-next>>", self.find_next_event) |
| 13 | self.text.bind("<<find-same>>", self.find_same_event) |
| 14 | self.text.bind("<<goto-line>>", self.goto_line_event) |
| 15 | |
| 16 | def find_event(self, event): |
| 17 | default = self.text.get("self.first", "sel.last") or self.pat |
| 18 | new = tkSimpleDialog.askstring("Find", |
| 19 | "Regular Expression:", |
| 20 | initialvalue=default, |
| 21 | parent=self.text) |
| 22 | if not new: |
| 23 | return "break" |
| 24 | self.pat = new |
| 25 | try: |
| 26 | self.prog = re.compile(self.pat) |
| 27 | except re.error, msg: |
| 28 | tkMessageBox.showerror("RE error", str(msg), |
| 29 | master=self.text) |
| 30 | return "break" |
| 31 | return self.find_next_event(event) |
| 32 | |
| 33 | def find_same_event(self, event): |
| 34 | pat = self.text.get("sel.first", "sel.last") |
| 35 | if not pat: |
| 36 | return self.find_event(event) |
| 37 | self.pat = re.escape(pat) |
| 38 | self.prog = None |
| 39 | try: |
| 40 | self.prog = re.compile(self.pat) |
| 41 | except re.error, msg: |
| 42 | tkMessageBox.showerror("RE error", str(message), |
| 43 | master=self.text) |
| 44 | return "break" |
| 45 | self.text.mark_set("insert", "sel.last") |
| 46 | return self.find_next_event(event) |
| 47 | |
| 48 | def find_next_event(self, event): |
| 49 | if not self.pat: |
| 50 | return self.find_event(event) |
| 51 | if not self.prog: |
| 52 | self.text.bell() |
| 53 | ##print "No program" |
| 54 | return "break" |
| 55 | self.text.mark_set("find", "insert") |
| 56 | while 1: |
| 57 | chars = self.text.get("find", "find lineend +1c") |
| 58 | ##print "Searching", `chars` |
| 59 | if not chars: |
| 60 | self.text.bell() |
| 61 | ##print "end of buffer" |
| 62 | break |
| 63 | m = self.prog.search(chars) |
| 64 | if m: |
| 65 | i, j = m.span() |
| 66 | self.text.mark_set("insert", "find +%dc" % j) |
| 67 | self.text.mark_set("find", "find +%dc" % i) |
| 68 | self.text.tag_remove("sel", "1.0", "end") |
| 69 | self.text.tag_add("sel", "find", "insert") |
| 70 | self.text.see("insert") |
| 71 | break |
| 72 | self.text.mark_set("find", "find lineend +1c") |
| 73 | return "break" |
| 74 | |
| 75 | def goto_line_event(self, event): |
| 76 | lineno = tkSimpleDialog.askinteger("Goto", |
| 77 | "Go to line number:") |
| 78 | if lineno is None: |
| 79 | return "break" |
| 80 | if lineno <= 0: |
| 81 | self.text.bell() |
| 82 | return "break" |
| 83 | self.text.mark_set("insert", "%d.0" % lineno) |
| 84 | self.text.see("insert") |