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Improve content negotiation on paste 

SVN revision: 49812
This commit is contained in:
Brett Nash 2010-06-23 08:02:35 +00:00
parent 061259fe6c
commit 4d4284614b
1 changed files with 206 additions and 21 deletions
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227
legacy/elementary/src/lib/elm_cnp_helper.c
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@ -46,15 +46,22 @@ struct _elm_cnp_selection {
Ecore_X_Selection ecore_sel;
Evas_Object *requestwidget;
enum _elm_sel_format requestformat;
int (*set)(Ecore_X_Window, const void *data, int size);
int (*clear)(void);
void (*request)(Ecore_X_Window, const char *target);
};
/* Optimisation: Turn this into a 256 byte table:
* then can lookup in one index, not N checks */
static const struct escapes {
const char *escape;
const char value;
} escapes[] = {
{ "<br>", '\n' },
{ "<\t>", '\t' },
{ "gt;", '>' },
{ "lt;", '<' },
{ "amp;",'&' },
@ -63,41 +70,55 @@ static const struct escapes {
};
#define N_ESCAPES ((int)(sizeof(escapes)/sizeof(escapes[0])))
typedef int (*converter_fn)(char *target, void *data, int size, void **data_ret, int *size_ret, Ecore_X_Atom *ttype, int *typesize);
static Eina_Bool _elm_cnp_init(void);
static int selection_clear(void *udata __UNUSED__, int type, void *event);
static int selection_notify(void *udata __UNUSED__, int type, void *event);
static char *remove_tags(const char *p, int *len);
static char *mark_up(const char *start, int *lenp);
typedef int (*converter_fn)(char *target, void *data, int size, void **data_ret, int *size_ret, Ecore_X_Atom *ttype, int *typesize);
static int targets_converter(char *target, void *data, int size, void **data_ret, int *size_ret, Ecore_X_Atom *ttype, int *typesize);
static int text_converter(char *target, void *data, int size, void **data_ret, int *size_ret, Ecore_X_Atom *ttype, int *typesize);
static int html_converter(char *target, void *data, int size, void **data_ret, int *size_ret, Ecore_X_Atom *ttype, int *typesize);
static int edje_converter(char *target, void *data, int size, void **data_ret, int *size_ret, Ecore_X_Atom *ttype, int *typesize);
typedef int (*response_handler)(struct _elm_cnp_selection *sel,
Ecore_X_Event_Selection_Notify *);
static int response_handler_targets(struct _elm_cnp_selection *sel,
Ecore_X_Event_Selection_Notify *);
static int response_handler_text(struct _elm_cnp_selection *sel,
Ecore_X_Event_Selection_Notify *);
static struct {
const char *name;
enum _elm_sel_format formats;
converter_fn converter;
response_handler response;
Ecore_X_Atom atom;
} atoms[CNP_N_ATOMS] = {
ARRAYINIT(CNP_ATOM_TARGETS) { "TARGETS",
(enum _elm_sel_format)-1, targets_converter, 0 },
(enum _elm_sel_format)-1, targets_converter,
response_handler_targets, 0 },
ARRAYINIT(CNP_ATOM_XEDJE) { "application/x-edje-string",
ELM_SEL_MARKUP, edje_converter, 0},
ELM_SEL_MARKUP, edje_converter, NULL, 0},
ARRAYINIT(CNP_ATOM_text_html_utf8) { "text/html;charset=utf-8",
ELM_SEL_MARKUP, html_converter, 0 },
ARRAYINIT(CNP_ATOM_text_html) { "text/html",
ELM_SEL_MARKUP, html_converter, 0 },
ARRAYINIT(CNP_ATOM_UTF8STRING) { "UTF8_STRING",
ELM_SEL_MARKUP, text_converter, 0 },
ARRAYINIT(CNP_ATOM_STRING) { "STRING",
ELM_SEL_MARKUP, text_converter, 0 },
ARRAYINIT(CNP_ATOM_TEXT) { "TEXT",
ELM_SEL_MARKUP, text_converter, 0 },
ELM_SEL_MARKUP, html_converter, NULL, 0 },
ARRAYINIT(CNP_ATOM_text_html) { "text/html", ELM_SEL_MARKUP,
html_converter, NULL, 0 },
ARRAYINIT(CNP_ATOM_UTF8STRING) { "UTF8_STRING", ELM_SEL_MARKUP,
text_converter, response_handler_text, 0 },
ARRAYINIT(CNP_ATOM_STRING) { "STRING", ELM_SEL_MARKUP,
text_converter, response_handler_text, 0 },
ARRAYINIT(CNP_ATOM_TEXT) { "TEXT", ELM_SEL_MARKUP,
text_converter, response_handler_text, 0 },
ARRAYINIT(CNP_ATOM_text_plain_utf8) { "text/plain;charset=ut-8",
ELM_SEL_MARKUP, text_converter, 0 },
ARRAYINIT(CNP_ATOM_text_plain) { "text/plain",
ELM_SEL_MARKUP, text_converter, 0 },
ELM_SEL_MARKUP, text_converter,
response_handler_text, 0 },
ARRAYINIT(CNP_ATOM_text_plain) { "text/plain", ELM_SEL_MARKUP,
text_converter, response_handler_text, 0 },
};
static struct _elm_cnp_selection selections[ELM_SEL_MAX] = {
@ -105,19 +126,22 @@ static struct _elm_cnp_selection selections[ELM_SEL_MAX] = {
.debug = "Primary",
.ecore_sel = ECORE_X_SELECTION_PRIMARY,
.set = ecore_x_selection_primary_set,
.clear = ecore_x_selection_primary_clear
.clear = ecore_x_selection_primary_clear,
.request = ecore_x_selection_primary_request,
},
ARRAYINIT(ELM_SEL_SECONDARY) {
.debug = "Secondary",
.ecore_sel = ECORE_X_SELECTION_SECONDARY,
.set = ecore_x_selection_secondary_set,
.clear = ecore_x_selection_secondary_clear
.clear = ecore_x_selection_secondary_clear,
.request = ecore_x_selection_secondary_request,
},
ARRAYINIT(ELM_SEL_CLIPBOARD) {
.debug = "Clipboard",
.ecore_sel = ECORE_X_SELECTION_CLIPBOARD,
.set = ecore_x_selection_clipboard_set,
.clear = ecore_x_selection_clipboard_clear
.clear = ecore_x_selection_clipboard_clear,
.request = ecore_x_selection_clipboard_request,
}
};
@ -163,6 +187,26 @@ elm_selection_clear(enum _elm_sel_type selection, Evas_Object *widget){
return true;
}
Eina_Bool
elm_selection_get(enum _elm_sel_type selection, enum _elm_sel_format format,
Evas_Object *widget){
Evas_Object *top;
struct _elm_cnp_selection *sel;
if ((unsigned int)selection >= (unsigned int)ELM_SEL_MAX) return false;
if (!_elm_cnp_init_count) _elm_cnp_init();
sel = selections + selection;
top = elm_widget_top_get(widget);
if (!top) return false;
sel->request(elm_win_xwindow_get(top), "TARGETS");
sel->requestformat = format;
sel->requestwidget = widget;
return EINA_TRUE;
}
static Eina_Bool
_elm_cnp_init(void){
int i;
@ -176,7 +220,8 @@ _elm_cnp_init(void){
atoms[i].converter);
}
ecore_event_handler_add(ECORE_X_EVENT_SELECTION_CLEAR, selection_clear, NULL);
ecore_event_handler_add(ECORE_X_EVENT_SELECTION_CLEAR, selection_clear,NULL);
ecore_event_handler_add(ECORE_X_EVENT_SELECTION_NOTIFY,selection_notify,NULL);
return true;
}
@ -202,6 +247,46 @@ selection_clear(void *udata __UNUSED__, int type, void *event){
return true;
}
/**
* Response to a selection notify
*/
static int
selection_notify(void *udata __UNUSED__, int type, void *event){
Ecore_X_Event_Selection_Notify *ev = event;
struct _elm_cnp_selection *sel;
int i;
switch (ev->selection){
case ECORE_X_SELECTION_CLIPBOARD:
sel = selections + ELM_SEL_CLIPBOARD;
break;
case ECORE_X_SELECTION_PRIMARY:
sel = selections + ELM_SEL_PRIMARY;
break;
case ECORE_X_SELECTION_SECONDARY:
sel = selections + ELM_SEL_SECONDARY;
break;
default:
return 1;
}
for (i = 0 ; i < CNP_N_ATOMS ; i ++)
{
if (strcmp(ev->target, atoms[i].name) == 0)
{
if (atoms[i].response){
atoms[i].response(sel, ev);
} else {
printf("Ignored: No handler!\n");
}
}
}
return 1;
}
static int
targets_converter(char *target, void *data, int size,
void **data_ret, int *size_ret,
@ -232,6 +317,61 @@ targets_converter(char *target, void *data, int size,
}
static int
response_handler_targets(struct _elm_cnp_selection *sel,
Ecore_X_Event_Selection_Notify *notify){
Ecore_X_Selection_Data_Targets *targets;
Ecore_X_Atom *atomlist;
Evas_Object *top;
int i,j;
int prio, selected;
targets = notify->data;
atomlist = (Ecore_X_Atom *)(targets->data.data);
prio = -1;
selected = -1;
/* Start from 1: Skip targets */
for (j = 1 ; j < CNP_N_ATOMS ; j ++)
{
if (!(atoms[j].formats & sel->requestformat)) continue;
for (i = 0 ; i < targets->data.length ; i ++)
{
if (atoms[j].atom == atomlist[i] && atoms[j].response){
/* Found a match: Use it */
goto found;
}
}
}
found:
if (j == CNP_N_ATOMS)
{
printf("No matching type found\n");
return 0;
}
top = elm_widget_top_get(sel->requestwidget);
if (!top) return 0;
sel->request(elm_win_xwindow_get(top), atoms[j].name);
return 0;
}
static int
response_handler_text(struct _elm_cnp_selection *sel,
Ecore_X_Event_Selection_Notify *notify){
Ecore_X_Selection_Data_Text *text;
char *str;
text = notify->data;
str = mark_up(text->text, NULL);
elm_entry_entry_insert(sel->requestwidget, str);
free(str);
return 0;
}
static int
text_converter(char *target, void *data, int size,
void **data_ret, int *size_ret,
@ -273,7 +413,6 @@ html_converter(char *target, void *data, int size, void **data_ret, int *size_re
/* FIXME: Doesn't handle '<foo str='>'>' */
static char *
remove_tags(const char *p, int *len){
char *q,*ret;
@ -312,4 +451,50 @@ remove_tags(const char *p, int *len){
return ret;
}
/* Mark up */
static char *
mark_up(const char *start, int *lenp){
int l,i;
const char *p;
char *q,*ret;
/* First pass: Count characters */
for (l = 0, p = start ; *p ; p ++)
{
for (i = 0 ; i < N_ESCAPES ; i ++)
{
if (*p == escapes[i].value)
{
l += strlen(escapes[i].escape);
break;
}
}
if (i == N_ESCAPES)
l ++;
}
q = ret = malloc(l + 1);
/* Second pass: Count characters */
for (p = start ; *p ; )
{
for (i = 0 ; i < N_ESCAPES ; i ++)
{
if (*p == escapes[i].value)
{
strcpy(q, escapes[i].escape);
q += strlen(escapes[i].escape);
p ++;
break;
}
}
if (i == N_ESCAPES)
*q ++ = *p ++;
}
*q = 0;
if (lenp) *lenp = l;
return ret;
}
/* vim: set ts=8 sw=3 sts=8 noexpandtab cino=>5n-3f0^-2{2 : */