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// Scintilla source code edit control
/** @file AutoComplete.cxx
** Defines the auto completion list box.
**/
// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "Platform.h"
#include "PropSet.h"
#include "AutoComplete.h"
AutoComplete::AutoComplete() :
active(false),
separator(' '),
ignoreCase(false),
chooseSingle(false),
posStart(0),
startLen(0),
cancelAtStartPos(true),
autoHide(true),
dropRestOfWord(false) {
stopChars[0] = '\0';
fillUpChars[0] = '\0';
}
AutoComplete::~AutoComplete() {
lb.Destroy();
}
bool AutoComplete::Active() {
return active;
}
void AutoComplete::Start(Window &parent, int ctrlID, int position, int startLen_) {
if (!lb.Created()) {
lb.Create(parent, ctrlID);
}
lb.Clear();
active = true;
startLen = startLen_;
posStart = position;
}
void AutoComplete::SetStopChars(const char *stopChars_) {
strncpy(stopChars, stopChars_, sizeof(stopChars));
stopChars[sizeof(stopChars) - 1] = '\0';
}
bool AutoComplete::IsStopChar(char ch) {
return ch && strchr(stopChars, ch);
}
void AutoComplete::SetFillUpChars(const char *fillUpChars_) {
strncpy(fillUpChars, fillUpChars_, sizeof(fillUpChars));
fillUpChars[sizeof(fillUpChars) - 1] = '\0';
}
bool AutoComplete::IsFillUpChar(char ch) {
return ch && strchr(fillUpChars, ch);
}
void AutoComplete::SetSeparator(char separator_) {
separator = separator_;
}
char AutoComplete::GetSeparator() {
return separator;
}
void AutoComplete::SetList(const char *list) {
lb.Clear();
char *words = new char[strlen(list) + 1];
if (words) {
strcpy(words, list);
char *startword = words;
int i = 0;
for (; words && words[i]; i++) {
if (words[i] == separator) {
words[i] = '\0';
lb.Append(startword);
startword = words + i + 1;
}
}
if (startword) {
lb.Append(startword);
}
delete []words;
}
}
void AutoComplete::Show() {
lb.Show();
lb.Select(0);
}
void AutoComplete::Cancel() {
if (lb.Created()) {
lb.Destroy();
active = false;
}
}
void AutoComplete::Move(int delta) {
int count = lb.Length();
int current = lb.GetSelection();
current += delta;
if (current >= count)
current = count - 1;
if (current < 0)
current = 0;
lb.Select(current);
}
void AutoComplete::Select(const char *word) {
int lenWord = strlen(word);
int location = -1;
const int maxItemLen=1000;
char item[maxItemLen];
int start = 0; // lower bound of the api array block to search
int end = lb.Length() - 1; // upper bound of the api array block to search
while ((start <= end) && (location == -1)) { // Binary searching loop
int pivot = (start + end) / 2;
lb.GetValue(pivot, item, maxItemLen);
int cond;
if (ignoreCase)
cond = CompareNCaseInsensitive(word, item, lenWord);
else
cond = strncmp(word, item, lenWord);
if (!cond) {
// Find first match
while (pivot > start) {
lb.GetValue(pivot-1, item, maxItemLen);
if (ignoreCase)
cond = CompareNCaseInsensitive(word, item, lenWord);
else
cond = strncmp(word, item, lenWord);
if (0 != cond)
break;
--pivot;
}
location = pivot;
} else if (cond < 0) {
end = pivot - 1;
} else if (cond > 0) {
start = pivot + 1;
}
}
if (location == -1 && autoHide)
Cancel();
else
lb.Select(location);
}
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