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netsurf/render/box.c

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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2003 James Bursa <bursa@users.sourceforge.net>
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
*/
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "libxml/HTMLparser.h"
#include "netsurf/content/fetchcache.h"
#include "netsurf/css/css.h"
#include "netsurf/render/box.h"
#include "netsurf/render/font.h"
#include "netsurf/render/html.h"
#ifdef riscos
#include "netsurf/desktop/gui.h"
#include "netsurf/riscos/plugin.h"
#endif
#define NDEBUG
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
/* status for box tree construction */
struct status {
struct content *content;
char *href;
char *title;
struct form* current_form;
struct page_elements* elements;
};
/* result of converting a special case element */
struct result {
struct box *box; /* box for element, if any, 0 otherwise */
int convert_children; /* children should be converted */
};
static void box_add_child(struct box * parent, struct box * child);
static struct box * box_create(struct css_style * style,
char *href, char *title);
static struct box * convert_xml_to_box(xmlNode * n, struct content *content,
struct css_style * parent_style,
struct css_selector ** selector, unsigned int depth,
struct box * parent, struct box *inline_container,
struct status status);
static struct css_style * box_get_style(struct content ** stylesheet,
unsigned int stylesheet_count, struct css_style * parent_style,
xmlNode * n, struct css_selector * selector, unsigned int depth);
static struct result box_a(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_body(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_image(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_form(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_textarea(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_select(xmlNode *n, struct status *status,
struct css_style *style);
struct result box_input(xmlNode *n, struct status *status,
struct css_style *style);
static void add_option(xmlNode* n, struct gui_gadget* current_select, char *text);
static void box_normalise_block(struct box *block);
static void box_normalise_table(struct box *table);
void box_normalise_table_row_group(struct box *row_group,
unsigned int **row_span, unsigned int *table_columns);
void box_normalise_table_row(struct box *row,
unsigned int **row_span, unsigned int *table_columns);
static void box_normalise_inline_container(struct box *cont);
static void gadget_free(struct gui_gadget* g);
static void box_free_box(struct box *box);
static struct result box_object(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_embed(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_applet(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_iframe(xmlNode *n, struct status *status,
struct css_style *style);
static struct form* create_form(xmlNode* n);
static void add_form_element(struct page_elements* pe, struct form* f);
static void add_gadget_element(struct page_elements* pe, struct gui_gadget* g);
static bool plugin_decode(struct content* content, char* url, struct box* box,
struct object_params* po);
/* element_table must be sorted by name */
struct element_entry {
char name[10]; /* element type */
struct result (*convert)(xmlNode *n, struct status *status,
struct css_style *style);
};
static const struct element_entry element_table[] = {
{"a", box_a},
{"applet", box_applet},
{"body", box_body},
{"embed", box_embed},
{"form", box_form},
{"iframe", box_iframe},
{"img", box_image},
{"input", box_input},
{"object", box_object},
{"select", box_select},
{"textarea", box_textarea}
};
#define ELEMENT_TABLE_COUNT (sizeof(element_table) / sizeof(element_table[0]))
/**
* add a child to a box tree node
*/
void box_add_child(struct box * parent, struct box * child)
{
if (parent->children != 0) { /* has children already */
parent->last->next = child;
child->prev = parent->last;
} else { /* this is the first child */
parent->children = child;
child->prev = 0;
}
parent->last = child;
child->parent = parent;
}
/**
* create a box tree node
*/
struct box * box_create(struct css_style * style,
char *href, char *title)
{
struct box * box = xcalloc(1, sizeof(struct box));
box->type = BOX_INLINE;
box->style = style;
box->width = UNKNOWN_WIDTH;
box->max_width = UNKNOWN_MAX_WIDTH;
box->href = href;
box->title = title;
box->columns = 1;
box->rows = 1;
#ifndef riscos
/* under RISC OS, xcalloc makes these unnecessary */
box->text = 0;
box->space = 0;
box->length = 0;
box->start_column = 0;
box->next = 0;
box->prev = 0;
box->children = 0;
box->last = 0;
box->parent = 0;
box->float_children = 0;
box->next_float = 0;
box->col = 0;
box->font = 0;
box->gadget = 0;
box->object = 0;
box->object_params = 0;
box->object_state = 0;
#endif
return box;
}
/**
* make a box tree with style data from an xml tree
*/
void xml_to_box(xmlNode *n, struct content *c)
{
struct css_selector* selector = xcalloc(1, sizeof(struct css_selector));
struct status status = {c, 0, 0, 0, &c->data.html.elements};
LOG(("node %p", n));
assert(c->type == CONTENT_HTML);
c->data.html.layout = xcalloc(1, sizeof(struct box));
c->data.html.layout->type = BOX_BLOCK;
c->data.html.style = xcalloc(1, sizeof(struct css_style));
memcpy(c->data.html.style, &css_base_style, sizeof(struct css_style));
c->data.html.fonts = font_new_set();
c->data.html.object_count = 0;
c->data.html.object = xcalloc(0, sizeof(*c->data.html.object));
convert_xml_to_box(n, c, c->data.html.style,
&selector, 0, c->data.html.layout, 0, status);
LOG(("normalising"));
box_normalise_block(c->data.html.layout->children);
}
/**
* make a box tree with style data from an xml tree
*
* arguments:
* n xml tree
* content content structure
* parent_style style at this point in xml tree
* selector element selector hierachy to this point
* depth depth in xml tree
* parent parent in box tree
* inline_container current inline container box, or 0
* status status for forms etc.
*
* returns:
* updated current inline container
*/
/* mapping from CSS display to box type
* this table must be in sync with css/css_enums */
static box_type box_map[] = {
0, /*CSS_DISPLAY_INHERIT,*/
BOX_INLINE, /*CSS_DISPLAY_INLINE,*/
BOX_BLOCK, /*CSS_DISPLAY_BLOCK,*/
BOX_BLOCK, /*CSS_DISPLAY_LIST_ITEM,*/
BOX_INLINE, /*CSS_DISPLAY_RUN_IN,*/
BOX_INLINE, /*CSS_DISPLAY_COMPACT,*/
BOX_INLINE, /*CSS_DISPLAY_MARKER,*/
BOX_TABLE, /*CSS_DISPLAY_TABLE,*/
BOX_TABLE, /*CSS_DISPLAY_INLINE_TABLE,*/
BOX_TABLE_ROW_GROUP, /*CSS_DISPLAY_TABLE_ROW_GROUP,*/
BOX_TABLE_ROW_GROUP, /*CSS_DISPLAY_TABLE_HEADER_GROUP,*/
BOX_TABLE_ROW_GROUP, /*CSS_DISPLAY_TABLE_FOOTER_GROUP,*/
BOX_TABLE_ROW, /*CSS_DISPLAY_TABLE_ROW,*/
BOX_INLINE, /*CSS_DISPLAY_TABLE_COLUMN_GROUP,*/
BOX_INLINE, /*CSS_DISPLAY_TABLE_COLUMN,*/
BOX_TABLE_CELL, /*CSS_DISPLAY_TABLE_CELL,*/
BOX_INLINE /*CSS_DISPLAY_TABLE_CAPTION,*/
};
struct box * convert_xml_to_box(xmlNode * n, struct content *content,
struct css_style * parent_style,
struct css_selector ** selector, unsigned int depth,
struct box * parent, struct box *inline_container,
struct status status)
{
struct box * box = 0;
struct box * inline_container_c;
struct css_style * style = 0;
xmlNode * c;
char * s;
char * text = 0;
xmlChar * title0;
char * title = 0;
int convert_children = 1;
assert(n != 0 && parent_style != 0 && selector != 0 && parent != 0);
LOG(("depth %i, node %p, node type %i", depth, n, n->type));
gui_multitask();
if (n->type == XML_ELEMENT_NODE) {
struct element_entry *element;
/* work out the style for this element */
*selector = xrealloc(*selector, (depth + 1) * sizeof(struct css_selector));
(*selector)[depth].element = (const char *) n->name;
(*selector)[depth].class = (*selector)[depth].id = 0;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "class")))
(*selector)[depth].class = s; /* TODO: free this later */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "id")))
(*selector)[depth].id = s;
style = box_get_style(content->data.html.stylesheet_content,
content->data.html.stylesheet_count, parent_style, n,
*selector, depth + 1);
LOG(("display: %s", css_display_name[style->display]));
if (style->display == CSS_DISPLAY_NONE) {
free(style);
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
}
/* floats are treated as blocks */
if (style->float_ == CSS_FLOAT_LEFT || style->float_ == CSS_FLOAT_RIGHT)
if (style->display == CSS_DISPLAY_INLINE)
style->display = CSS_DISPLAY_BLOCK;
/* extract title attribute, if present */
if ((title0 = xmlGetProp(n, (const xmlChar *) "title"))) {
title = squash_tolat1(title0);
xfree(title0);
}
/* special elements */
element = bsearch((const char *) n->name, element_table,
ELEMENT_TABLE_COUNT, sizeof(element_table[0]),
(int (*)(const void *, const void *)) strcmp);
if (element != 0) {
/* a special convert function exists for this element */
struct result res = element->convert(n, &status, style);
box = res.box;
convert_children = res.convert_children;
if (box == 0) {
/* no box for this element */
assert(convert_children == 0);
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
}
} else {
/* general element */
box = box_create(style, status.href, title);
}
box->type = box_map[style->display];
} else if (n->type == XML_TEXT_NODE) {
text = squash_tolat1(n->content);
/* if the text is just a space, combine it with the preceding
* text node, if any */
if (text[0] == ' ' && text[1] == 0) {
if (inline_container != 0) {
assert(inline_container->last != 0);
inline_container->last->space = 1;
}
xfree(text);
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
}
/* text nodes are converted to inline boxes */
box = box_create(parent_style, status.href, title);
box->length = strlen(text);
if (text[box->length - 1] == ' ') {
box->space = 1;
box->length--;
}
box->text = text;
box->font = font_open(content->data.html.fonts, box->style);
} else {
/* not an element or text node: ignore it (eg. comment) */
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
}
content->size += sizeof(struct box) + sizeof(struct css_style);
assert(box != 0);
if (text != 0 ||
box->type == BOX_INLINE ||
style->float_ == CSS_FLOAT_LEFT ||
style->float_ == CSS_FLOAT_RIGHT) {
/* this is an inline box */
if (inline_container == 0) {
/* this is the first inline node: make a container */
inline_container = xcalloc(1, sizeof(struct box));
inline_container->type = BOX_INLINE_CONTAINER;
box_add_child(parent, inline_container);
}
if (text != 0) {
/* text box */
box_add_child(inline_container, box);
if (text[0] == ' ') {
box->length--;
memmove(text, text + 1, box->length);
if (box->prev != 0)
box->prev->space = 1;
}
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
} else if (style->float_ == CSS_FLOAT_NONE) {
/* inline box: add to tree and recurse */
box_add_child(inline_container, box);
if (convert_children) {
for (c = n->children; c != 0; c = c->next)
inline_container = convert_xml_to_box(c, content, style,
selector, depth + 1, parent, inline_container,
status);
}
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
} else {
/* float: insert a float box between the parent and current node */
assert(style->float_ == CSS_FLOAT_LEFT || style->float_ == CSS_FLOAT_RIGHT);
LOG(("float"));
parent = box_create(0, status.href, title);
if (style->float_ == CSS_FLOAT_LEFT)
parent->type = BOX_FLOAT_LEFT;
else
parent->type = BOX_FLOAT_RIGHT;
box_add_child(inline_container, parent);
if (box->type == BOX_INLINE)
box->type = BOX_BLOCK;
}
}
assert(n->type == XML_ELEMENT_NODE);
assert(CSS_DISPLAY_INLINE < style->display &&
style->display < CSS_DISPLAY_NONE);
/* non-inline box: add to tree and recurse */
box_add_child(parent, box);
if (convert_children) {
inline_container_c = 0;
for (c = n->children; c != 0; c = c->next)
inline_container_c = convert_xml_to_box(c, content, style,
selector, depth + 1, box, inline_container_c,
status);
}
if (style->float_ == CSS_FLOAT_NONE)
/* new inline container unless this is a float */
inline_container = 0;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "colspan"))) {
if ((box->columns = strtol(s, 0, 10)) == 0)
box->columns = 1;
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "rowspan"))) {
if ((box->rows = strtol(s, 0, 10)) == 0)
box->rows = 1;
xmlFree(s);
}
LOG(("depth %i, node %p, node type %i END", depth, n, n->type));
return inline_container;
}
/**
* Get the style for an element
*
* The style is collected from three sources:
* 1. any styles for this element in the document stylesheet(s)
* 2. non-CSS HTML attributes
* 3. the 'style' attribute
*/
struct css_style * box_get_style(struct content ** stylesheet,
unsigned int stylesheet_count, struct css_style * parent_style,
xmlNode * n, struct css_selector * selector, unsigned int depth)
{
struct css_style * style = xcalloc(1, sizeof(struct css_style));
struct css_style * style_new = xcalloc(1, sizeof(struct css_style));
char * s;
unsigned int i;
memcpy(style, parent_style, sizeof(struct css_style));
memcpy(style_new, &css_blank_style, sizeof(struct css_style));
for (i = 0; i != stylesheet_count; i++) {
if (stylesheet[i] != 0) {
assert(stylesheet[i]->type == CONTENT_CSS);
css_get_style(stylesheet[i], selector, depth, style_new);
}
}
css_cascade(style, style_new);
free(style_new);
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "align"))) {
if (strcmp((const char *) n->name, "table") == 0 ||
strcmp((const char *) n->name, "img") == 0) {
if (stricmp(s, "left") == 0) style->float_ = CSS_FLOAT_LEFT;
else if (stricmp(s, "right") == 0) style->float_ = CSS_FLOAT_RIGHT;
} else {
if (stricmp(s, "left") == 0) style->text_align = CSS_TEXT_ALIGN_LEFT;
else if (stricmp(s, "center") == 0) style->text_align = CSS_TEXT_ALIGN_CENTER;
else if (stricmp(s, "right") == 0) style->text_align = CSS_TEXT_ALIGN_RIGHT;
}
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "bgcolor"))) {
unsigned int r, g, b;
if (s[0] == '#' && sscanf(s + 1, "%2x%2x%2x", &r, &g, &b) == 3)
style->background_color = (b << 16) | (g << 8) | r;
else if (s[0] != '#')
style->background_color = named_colour(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "clear"))) {
if (stricmp(s, "all") == 0) style->clear = CSS_CLEAR_BOTH;
else if (stricmp(s, "left") == 0) style->clear = CSS_CLEAR_LEFT;
else if (stricmp(s, "right") == 0) style->clear = CSS_CLEAR_RIGHT;
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "color"))) {
unsigned int r, g, b;
if (s[0] == '#' && sscanf(s + 1, "%2x%2x%2x", &r, &g, &b) == 3)
style->color = (b << 16) | (g << 8) | r;
else if (s[0] != '#')
style->color = named_colour(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "height"))) {
float value = atof(s);
if (value < 0) {
/* ignore negative values */
} else if (strrchr(s, '%')) {
/*the specification doesn't make clear what
* percentage heights mean, so ignore them */
} else {
style->height.height = CSS_HEIGHT_LENGTH;
style->height.length.unit = CSS_UNIT_PX;
style->height.length.value = value;
}
xmlFree(s);
}
if (strcmp((const char *) n->name, "body") == 0) {
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "text"))) {
unsigned int r, g, b;
if (s[0] == '#' && sscanf(s + 1, "%2x%2x%2x", &r, &g, &b) == 3)
style->color = (b << 16) | (g << 8) | r;
else if (s[0] != '#')
style->color = named_colour(s);
xmlFree(s);
}
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "width"))) {
float value = atof(s);
if (value < 0) {
/* ignore negative values */
} else if (strrchr(s, '%')) {
style->width.width = CSS_WIDTH_PERCENT;
style->width.value.percent = value;
} else {
style->width.width = CSS_WIDTH_LENGTH;
style->width.value.length.unit = CSS_UNIT_PX;
style->width.value.length.value = value;
}
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "style"))) {
struct css_style * astyle = xcalloc(1, sizeof(struct css_style));
memcpy(astyle, &css_empty_style, sizeof(struct css_style));
css_parse_property_list(astyle, s);
css_cascade(style, astyle);
free(astyle);
xmlFree(s);
}
return style;
}
/**
* Special case elements
*
* These functions are called by convert_xml_to_box when an element is being
* converted, according to the entries in element_table (top of file).
*
* The parameters are the xmlNode, a status structure for the conversion, and
* the style found for the element.
*
* If a box is created, it is returned in the result structure. The
* convert_children field should be 1 if convert_xml_to_box should convert the
* node's children recursively, 0 if it should ignore them (presumably they
* have been processed in some way by the function). If box is 0, no box will
* be created for that element, and convert_children must be 0.
*/
struct result box_a(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
char *s;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "href")))
status->href = s;
box = box_create(style, status->href, status->title);
return (struct result) {box, 1};
}
struct result box_body(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
status->content->data.html.background_colour = style->background_color;
box = box_create(style, status->href, status->title);
return (struct result) {box, 1};
}
struct result box_image(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
char *s, *url;
/*xmlChar *s2;*/
box = box_create(style, status->href, status->title);
/* handle alt text */
/*if ((s2 = xmlGetProp(n, (const xmlChar *) "alt"))) {
box->text = squash_tolat1(s2);
box->length = strlen(box->text);
box->font = font_open(content->data.html.fonts, style);
free(s2);
}*/
/* img without src is an error */
if (!(s = (char *) xmlGetProp(n, (const xmlChar *) "src")))
return (struct result) {box, 0};
url = url_join(s, status->content->url);
LOG(("image '%s'", url));
xmlFree(s);
/* start fetch */
html_fetch_object(status->content, url, box);
return (struct result) {box, 0};
}
struct result box_form(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
box = box_create(style, status->href, status->title);
status->current_form = create_form(n);
add_form_element(status->elements, status->current_form);
return (struct result) {box, 1};
}
struct result box_textarea(xmlNode *n, struct status *status,
struct css_style *style)
{
xmlChar *content;
struct box* box = 0;
char* s;
box = box_create(style, NULL, 0);
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
box->gadget->type = GADGET_TEXTAREA;
box->gadget->form = status->current_form;
content = xmlNodeGetContent(n);
box->gadget->data.textarea.text = squash_tolat1(content); /* squash ? */
xmlFree(content);
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "cols")))
{
box->gadget->data.textarea.cols = atoi(s);
xmlFree(s);
}
else
box->gadget->data.textarea.cols = 40;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "rows")))
{
box->gadget->data.textarea.rows = atoi(s);
xmlFree(s);
}
else
box->gadget->data.textarea.rows = 16;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "name")))
{
box->gadget->name = s;
}
add_gadget_element(status->elements, box->gadget);
return (struct result) {box, 0};
}
struct result box_select(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box* box = 0;
char* s;
xmlNode *c;
box = box_create(style, NULL, 0);
box->gadget = xcalloc(1, sizeof(struct gui_gadget));
box->gadget->type = GADGET_SELECT;
box->gadget->form = status->current_form;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "size")))
{
box->gadget->data.select.size = atoi(s);
xmlFree(s);
}
else
box->gadget->data.select.size = 1;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "multiple"))) {
box->gadget->data.select.multiple = 1;
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "name"))) {
box->gadget->name = s;
}
box->gadget->data.select.items = NULL;
box->gadget->data.select.numitems = 0;
/* TODO: multiple */
for (c = n->children; c != 0; c = c->next) {
if (strcmp((const char *) c->name, "option") == 0) {
xmlChar *content = xmlNodeGetContent(c);
add_option(c, box->gadget, squash_tolat1(content));
xmlFree(content);
}
}
add_gadget_element(status->elements, box->gadget);
return (struct result) {box, 0};
}
void add_option(xmlNode* n, struct gui_gadget* current_select, char *text)
{
struct formoption* option;
char* s;
assert(current_select != 0);
if (current_select->data.select.items == 0)
{
option = xcalloc(1, sizeof(struct formoption));
current_select->data.select.items = option;
}
else
{
struct formoption* current;
option = xcalloc(1, sizeof(struct formoption));
current = current_select->data.select.items;
/* TODO: make appending constant time */
while (current->next != 0)
current = current->next;
current->next = option;
}
option->text = text;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "selected"))) {
option->selected = -1;
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "value"))) {
option->value = s;
}
}
struct result box_input(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box* box = 0;
struct gui_gadget *gadget = 0;
char *s, *type;
type = (char *) xmlGetProp(n, (const xmlChar *) "type");
/* the default type is "text" */
if (type == 0 || stricmp(type, "text") == 0 ||
stricmp(type, "password") == 0)
{
box = box_create(style, NULL, 0);
box->gadget = gadget = xcalloc(1, sizeof(struct gui_gadget));
gadget->type = GADGET_TEXTBOX;
gadget->data.textbox.maxlength = 32;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "maxlength"))) {
gadget->data.textbox.maxlength = atoi(s);
xmlFree(s);
}
gadget->data.textbox.size = box->gadget->data.textbox.maxlength;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "size"))) {
gadget->data.textbox.size = atoi(s);
xmlFree(s);
}
gadget->data.textbox.text = xcalloc(
gadget->data.textbox.maxlength + 2, sizeof(char));
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "value"))) {
strncpy(gadget->data.textbox.text, s,
gadget->data.textbox.maxlength);
xmlFree(s);
}
}
else if (stricmp(type, "hidden") == 0)
{
/* no box for hidden inputs */
gadget = xcalloc(1, sizeof(struct gui_gadget));
gadget->type = GADGET_HIDDEN;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "value")))
gadget->data.hidden.value = s;
}
else if (stricmp(type, "checkbox") == 0 || stricmp(type, "radio") == 0)
{
box = box_create(style, NULL, 0);
box->gadget = gadget = xcalloc(1, sizeof(struct gui_gadget));
if (type[0] == 'c' || type[0] == 'C')
gadget->type = GADGET_CHECKBOX;
else
gadget->type = GADGET_RADIO;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "checked"))) {
if (gadget->type == GADGET_CHECKBOX)
gadget->data.checkbox.selected = -1;
else
gadget->data.radio.selected = -1;
xmlFree(s);
}
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "value"))) {
if (gadget->type == GADGET_CHECKBOX)
gadget->data.checkbox.value = s;
else
gadget->data.radio.value = s;
}
}
else if (stricmp(type, "submit") == 0 || stricmp(type, "reset") == 0)
{
box = box_create(style, NULL, 0);
box->gadget = gadget = xcalloc(1, sizeof(struct gui_gadget));
gadget->type = GADGET_ACTIONBUTTON;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "value"))) {
gadget->data.actionbutt.label = s;
}
else
{
gadget->data.actionbutt.label = xstrdup(type);
gadget->data.actionbutt.label[0] = toupper(type[0]);
}
box->gadget->data.actionbutt.butttype = strdup(type);
}
if (type != 0)
xmlFree(type);
if (gadget != 0) {
gadget->form = status->current_form;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "name")))
gadget->name = s;
add_gadget_element(status->elements, gadget);
}
return (struct result) {box, 0};
}
/**
* print a box tree to standard output
*/
void box_dump(struct box * box, unsigned int depth)
{
unsigned int i;
struct box * c;
for (i = 0; i < depth; i++)
fprintf(stderr, " ");
fprintf(stderr, "x%li y%li w%li h%li ", box->x, box->y, box->width, box->height);
if (box->max_width != UNKNOWN_MAX_WIDTH)
fprintf(stderr, "min%lu max%lu ", box->min_width, box->max_width);
switch (box->type) {
case BOX_BLOCK: fprintf(stderr, "BOX_BLOCK "); break;
case BOX_INLINE_CONTAINER: fprintf(stderr, "BOX_INLINE_CONTAINER "); break;
case BOX_INLINE: if (box->text != 0)
fprintf(stderr, "BOX_INLINE '%.*s' ",
(int) box->length, box->text);
else
fprintf(stderr, "BOX_INLINE (special) ");
break;
case BOX_TABLE: fprintf(stderr, "BOX_TABLE "); break;
case BOX_TABLE_ROW: fprintf(stderr, "BOX_TABLE_ROW "); break;
case BOX_TABLE_CELL: fprintf(stderr, "BOX_TABLE_CELL [columns %i] ",
box->columns); break;
case BOX_TABLE_ROW_GROUP: fprintf(stderr, "BOX_TABLE_ROW_GROUP "); break;
case BOX_FLOAT_LEFT: fprintf(stderr, "BOX_FLOAT_LEFT "); break;
case BOX_FLOAT_RIGHT: fprintf(stderr, "BOX_FLOAT_RIGHT "); break;
default: fprintf(stderr, "Unknown box type ");
}
if (box->style)
css_dump_style(box->style);
if (box->href != 0)
fprintf(stderr, " -> '%s'", box->href);
if (box->title != 0)
fprintf(stderr, " [%s]", box->title);
fprintf(stderr, "\n");
for (c = box->children; c != 0; c = c->next)
box_dump(c, depth + 1);
}
/**
* ensure the box tree is correctly nested
*
* parent permitted child nodes
* BLOCK BLOCK, INLINE_CONTAINER, TABLE
* INLINE_CONTAINER INLINE, FLOAT_LEFT, FLOAT_RIGHT
* INLINE none
* TABLE at least 1 TABLE_ROW_GROUP
* TABLE_ROW_GROUP at least 1 TABLE_ROW
* TABLE_ROW at least 1 TABLE_CELL
* TABLE_CELL BLOCK, INLINE_CONTAINER, TABLE (same as BLOCK)
* FLOAT_(LEFT|RIGHT) exactly 1 BLOCK or TABLE
*/
void box_normalise_block(struct box *block)
{
struct box *child;
struct box *next_child;
struct box *table;
struct css_style *style;
assert(block != 0);
assert(block->type == BOX_BLOCK || block->type == BOX_TABLE_CELL);
LOG(("block %p, block->type %u", block, block->type));
gui_multitask();
for (child = block->children; child != 0; child = next_child) {
LOG(("child %p, child->type = %d", child, child->type));
next_child = child->next; /* child may be destroyed */
switch (child->type) {
case BOX_BLOCK:
/* ok */
box_normalise_block(child);
break;
case BOX_INLINE_CONTAINER:
box_normalise_inline_container(child);
break;
case BOX_TABLE:
box_normalise_table(child);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_ROW:
case BOX_TABLE_CELL:
/* insert implied table */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, block->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
table = box_create(style, block->href, 0);
table->type = BOX_TABLE;
if (child->prev == 0)
block->children = table;
else
child->prev->next = table;
table->prev = child->prev;
while (child != 0 && (
child->type == BOX_TABLE_ROW_GROUP ||
child->type == BOX_TABLE_ROW ||
child->type == BOX_TABLE_CELL)) {
box_add_child(table, child);
child = child->next;
}
table->last->next = 0;
table->next = next_child = child;
table->parent = block;
box_normalise_table(table);
break;
default:
assert(0);
}
}
LOG(("block %p done", block));
}
void box_normalise_table(struct box *table)
{
struct box *child;
struct box *next_child;
struct box *row_group;
struct css_style *style;
unsigned int *row_span = xcalloc(2, sizeof(row_span[0]));
unsigned int table_columns = 1;
assert(table != 0);
assert(table->type == BOX_TABLE);
LOG(("table %p", table));
row_span[0] = row_span[1] = 0;
for (child = table->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_TABLE_ROW_GROUP:
/* ok */
box_normalise_table_row_group(child, &row_span,
&table_columns);
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW:
case BOX_TABLE_CELL:
/* insert implied table row group */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, table->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
row_group = box_create(style, table->href, 0);
row_group->type = BOX_TABLE_ROW_GROUP;
if (child->prev == 0)
table->children = row_group;
else
child->prev->next = row_group;
row_group->prev = child->prev;
while (child != 0 && (
child->type == BOX_BLOCK ||
child->type == BOX_INLINE_CONTAINER ||
child->type == BOX_TABLE ||
child->type == BOX_TABLE_ROW ||
child->type == BOX_TABLE_CELL)) {
box_add_child(row_group, child);
child = child->next;
}
row_group->last->next = 0;
row_group->next = next_child = child;
row_group->parent = table;
box_normalise_table_row_group(row_group, &row_span,
&table_columns);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
default:
fprintf(stderr, "%i\n", child->type);
assert(0);
}
}
table->columns = table_columns;
xfree(row_span);
if (table->children == 0) {
LOG(("table->children == 0, removing"));
if (table->prev == 0)
table->parent->children = table->next;
else
table->prev->next = table->next;
if (table->next != 0)
table->next->prev = table->prev;
box_free_box(table);
}
LOG(("table %p done", table));
}
void box_normalise_table_row_group(struct box *row_group,
unsigned int **row_span, unsigned int *table_columns)
{
struct box *child;
struct box *next_child;
struct box *row;
struct css_style *style;
assert(row_group != 0);
assert(row_group->type == BOX_TABLE_ROW_GROUP);
LOG(("row_group %p", row_group));
for (child = row_group->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_TABLE_ROW:
/* ok */
box_normalise_table_row(child, row_span, table_columns);
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_CELL:
/* insert implied table row */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, row_group->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
row = box_create(style, row_group->href, 0);
row->type = BOX_TABLE_ROW;
if (child->prev == 0)
row_group->children = row;
else
child->prev->next = row;
row->prev = child->prev;
while (child != 0 && (
child->type == BOX_BLOCK ||
child->type == BOX_INLINE_CONTAINER ||
child->type == BOX_TABLE ||
child->type == BOX_TABLE_ROW_GROUP ||
child->type == BOX_TABLE_CELL)) {
box_add_child(row, child);
child = child->next;
}
row->last->next = 0;
row->next = next_child = child;
row->parent = row_group;
box_normalise_table_row(row, row_span, table_columns);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
default:
assert(0);
}
}
if (row_group->children == 0) {
LOG(("row_group->children == 0, removing"));
if (row_group->prev == 0)
row_group->parent->children = row_group->next;
else
row_group->prev->next = row_group->next;
if (row_group->next != 0)
row_group->next->prev = row_group->prev;
box_free_box(row_group);
}
LOG(("row_group %p done", row_group));
}
void box_normalise_table_row(struct box *row,
unsigned int **row_span, unsigned int *table_columns)
{
struct box *child;
struct box *next_child;
struct box *cell;
struct css_style *style;
unsigned int columns = 0, i, min;
assert(row != 0);
assert(row->type == BOX_TABLE_ROW);
LOG(("row %p", row));
for (child = row->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_TABLE_CELL:
/* ok */
box_normalise_block(child);
cell = child;
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_ROW:
/* insert implied table cell */
style = xcalloc(1, sizeof(struct css_style));
memcpy(style, row->style, sizeof(struct css_style));
css_cascade(style, &css_blank_style);
cell = box_create(style, row->href, 0);
cell->type = BOX_TABLE_CELL;
if (child->prev == 0)
row->children = cell;
else
child->prev->next = cell;
cell->prev = child->prev;
while (child != 0 && (
child->type == BOX_BLOCK ||
child->type == BOX_INLINE_CONTAINER ||
child->type == BOX_TABLE ||
child->type == BOX_TABLE_ROW_GROUP ||
child->type == BOX_TABLE_ROW)) {
box_add_child(cell, child);
child = child->next;
}
cell->last->next = 0;
cell->next = next_child = child;
cell->parent = row;
box_normalise_block(cell);
break;
case BOX_INLINE:
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* should have been wrapped in inline
container by convert_xml_to_box() */
assert(0);
break;
default:
assert(0);
}
/* skip columns with cells spanning from above */
while ((*row_span)[columns] != 0)
columns++;
cell->start_column = columns;
if (*table_columns < columns + cell->columns) {
*table_columns = columns + cell->columns;
*row_span = xrealloc(*row_span,
sizeof((*row_span)[0]) *
(*table_columns + 1));
(*row_span)[*table_columns] = 0; /* sentinel */
}
for (i = 0; i != cell->columns; i++)
(*row_span)[columns + i] = cell->rows;
columns += cell->columns;
}
for (i = 0; i != *table_columns; i++)
if ((*row_span)[i] != 0)
(*row_span)[i]--;
if (row->children == 0) {
LOG(("row->children == 0, removing"));
if (row->prev == 0)
row->parent->children = row->next;
else
row->prev->next = row->next;
if (row->next != 0)
row->next->prev = row->prev;
box_free_box(row);
}
LOG(("row %p done", row));
}
void box_normalise_inline_container(struct box *cont)
{
struct box *child;
struct box *next_child;
assert(cont != 0);
assert(cont->type == BOX_INLINE_CONTAINER);
LOG(("cont %p", cont));
for (child = cont->children; child != 0; child = next_child) {
next_child = child->next;
switch (child->type) {
case BOX_INLINE:
/* ok */
break;
case BOX_FLOAT_LEFT:
case BOX_FLOAT_RIGHT:
/* ok */
assert(child->children != 0);
switch (child->children->type) {
case BOX_BLOCK:
box_normalise_block(child->children);
break;
case BOX_TABLE:
box_normalise_table(child->children);
break;
default:
assert(0);
}
break;
case BOX_BLOCK:
case BOX_INLINE_CONTAINER:
case BOX_TABLE:
case BOX_TABLE_ROW_GROUP:
case BOX_TABLE_ROW:
case BOX_TABLE_CELL:
default:
assert(0);
}
}
LOG(("cont %p done", cont));
}
void gadget_free(struct gui_gadget* g)
{
struct formoption *o, *o1;
if (g->name != 0)
xmlFree(g->name);
switch (g->type)
{
case GADGET_HIDDEN:
if (g->data.hidden.value != 0)
xmlFree(g->data.hidden.value);
break;
case GADGET_RADIO:
if (g->data.checkbox.value != 0)
xmlFree(g->data.radio.value);
break;
case GADGET_CHECKBOX:
if (g->data.checkbox.value != 0)
xmlFree(g->data.checkbox.value);
break;
case GADGET_TEXTAREA:
if (g->data.textarea.text != 0)
xmlFree(g->data.textarea.text);
break;
case GADGET_TEXTBOX:
gui_remove_gadget(g);
if (g->data.textbox.text != 0)
xmlFree(g->data.textbox.text);
break;
case GADGET_ACTIONBUTTON:
if (g->data.actionbutt.label != 0)
xmlFree(g->data.actionbutt.label);
break;
case GADGET_SELECT:
o = g->data.select.items;
while (o != NULL)
{
if (o->text != 0)
xmlFree(o->text);
if (o->value != 0)
xmlFree(o->value);
o1 = o->next;
xfree(o);
o = o1;
}
break;
}
}
/**
* free a box tree recursively
*/
void box_free(struct box *box)
{
/* free children first */
if (box->children != 0)
box_free(box->children);
/* then siblings */
if (box->next != 0)
box_free(box->next);
/* last this box */
box_free_box(box);
}
void box_free_box(struct box *box)
{
// if (box->style != 0)
// free(box->style);
if (box->gadget != 0)
{
gadget_free(box->gadget);
free(box->gadget);
}
free(box->text);
xmlFree(box->title);
free(box->col);
/* only free href if we're the top most user */
/*if (box->href != 0)
{
if (box->parent == 0)
xmlFree(box->href);
else if (box->parent->href != box->href)
xmlFree(box->href);
}*/
/* TODO: free object_params */
}
/**
* form helper functions
*/
struct form* create_form(xmlNode* n)
{
struct form* form;
char* s;
form = xcalloc(1, sizeof(*form));
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "action"))) {
form->action = s;
}
form->method = method_GET;
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "method"))) {
if (stricmp(s, "post") == 0)
form->method = method_POST;
xmlFree(s);
}
return form;
}
void add_form_element(struct page_elements* pe, struct form* f)
{
pe->forms = xrealloc(pe->forms, (pe->numForms + 1) * sizeof(struct form*));
pe->forms[pe->numForms] = f;
pe->numForms++;
}
void add_gadget_element(struct page_elements* pe, struct gui_gadget* g)
{
pe->gadgets = xrealloc(pe->gadgets, (pe->numGadgets + 1) * sizeof(struct gui_gadget*));
pe->gadgets[pe->numGadgets] = g;
pe->numGadgets++;
}
/**
* add an object to the box tree
*/
struct result box_object(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct object_params *po;
struct plugin_params* pp;
char *s, *url;
xmlNode *c;
box = box_create(style, status->href, 0);
po = xcalloc(1, sizeof(*po));
/* initialise po struct */
po->data = 0;
po->type = 0;
po->codetype = 0;
po->codebase = 0;
po->classid = 0;
po->params = 0;
/* object data */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "data"))) {
po->data = strdup(s);
url = url_join(strdup(s), status->content->url);
LOG(("object '%s'", po->data));
xmlFree(s);
}
/* object type */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "type"))) {
po->type = strdup(s);
LOG(("type: %s", s));
xmlFree(s);
}
/* object codetype */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "codetype"))) {
po->codetype = strdup(s);
LOG(("codetype: %s", s));
xmlFree(s);
}
/* object codebase */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "codebase"))) {
po->codebase = strdup(s);
LOG(("codebase: %s", s));
xmlFree(s);
}
/* object classid */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "classid"))) {
po->classid = strdup(s);
LOG(("classid: %s", s));
xmlFree(s);
}
/* parameters
* parameter data is stored in a singly linked list.
* po->params points to the head of the list.
* new parameters are added to the head of the list.
*/
for (c = n->children; c != 0; c = c->next) {
if (strcmp((const char *) c->name, "param") == 0) {
pp = xcalloc(1, sizeof(*pp));
/* initialise pp struct */
pp->name = 0;
pp->value = 0;
pp->valuetype = 0;
pp->type = 0;
pp->next = 0;
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "name"))) {
pp->name = strdup(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "value"))) {
pp->value = strdup(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "type"))) {
pp->type = strdup(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "valuetype"))) {
pp->valuetype = strdup(s);
xmlFree(s);
}
else {
pp->valuetype = strdup("data");
}
pp->next = po->params;
po->params = pp;
}
else {
/* The first non-param child is the start of the
* alt html. Therefore, we should break out of this loop.
*/
continue;
}
}
box->object_params = po;
/* start fetch */
if (plugin_decode(status->content, url, box, po))
return (struct result) {box, 0};
return (struct result) {box, 1};
}
/**
* add an embed to the box tree
*/
struct result box_embed(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct object_params *po;
struct plugin_params *pp;
char *s, *url;
xmlAttr *a;
box = box_create(style, status->href, 0);
po = xcalloc(1, sizeof(*po));
/* initialise po struct */
po->data = 0;
po->type = 0;
po->codetype = 0;
po->codebase = 0;
po->classid = 0;
po->params = 0;
/* embed src */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "src"))) {
po->data = strdup(s);
url = url_join(strdup(s), status->content->url);
LOG(("embed '%s'", url));
xmlFree(s);
}
/**
* we munge all other attributes into a plugin_parameter structure
*/
for(a=n->properties; a!=0; a=a->next) {
pp = xcalloc(1, sizeof(*pp));
/* initialise pp struct */
pp->name = 0;
pp->value = 0;
pp->valuetype = 0;
pp->type = 0;
pp->next = 0;
if(strcasecmp((char*)a->name, "src") != 0) {
pp->name = strdup((char*)a->name);
pp->value = strdup((char*)a->children->content);
pp->valuetype = strdup("data");
pp->next = po->params;
po->params = pp;
}
}
box->object_params = po;
/* start fetch */
plugin_decode(status->content, url, box, po);
return (struct result) {box,0};
}
/**
* add an applet to the box tree
*/
struct result box_applet(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct object_params *po;
struct plugin_params *pp;
char *s, *url;
xmlNode *c;
box = box_create(style, status->href, 0);
po = xcalloc(1, sizeof(*po));
/* initialise po struct */
po->data = 0;
po->type = 0;
po->codetype = 0;
po->codebase = 0;
po->classid = 0;
po->params = 0;
/* code */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "code"))) {
po->classid = strdup(s);
url = url_join(strdup(s), status->content->url);
LOG(("applet '%s'", url));
xmlFree(s);
}
/* object codebase */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "codebase"))) {
po->codebase = strdup(s);
LOG(("codebase: %s", s));
xmlFree(s);
}
/* parameters
* parameter data is stored in a singly linked list.
* po->params points to the head of the list.
* new parameters are added to the head of the list.
*/
for (c = n->children; c != 0; c = c->next) {
if (strcmp((const char *) c->name, "param") == 0) {
pp = xcalloc(1, sizeof(*pp));
/* initialise pp struct */
pp->name = 0;
pp->value = 0;
pp->valuetype = 0;
pp->type = 0;
pp->next = 0;
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "name"))) {
pp->name = strdup(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "value"))) {
pp->value = strdup(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "type"))) {
pp->type = strdup(s);
xmlFree(s);
}
if ((s = (char *) xmlGetProp(c, (const xmlChar *) "valuetype"))) {
pp->valuetype = strdup(s);
xmlFree(s);
}
else {
pp->valuetype = strdup("data");
}
pp->next = po->params;
po->params = pp;
}
else {
/* The first non-param child is the start of the
* alt html. Therefore, we should break out of this loop.
*/
continue;
}
}
/* start fetch */
if(plugin_decode(status->content, url, box, po))
return (struct result) {box,0};
return (struct result) {box,1};
}
/**
* box_iframe
* add an iframe to the box tree
* TODO - implement GUI nested wimp stuff 'cos this looks naff atm. (16_5)
*/
struct result box_iframe(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct object_params *po;
char *s, *url;
box = box_create(style, status->href, 0);
po = xcalloc(1, sizeof(*po));
/* initialise po struct */
po->data = 0;
po->type = 0;
po->codetype = 0;
po->codebase = 0;
po->classid = 0;
po->params = 0;
/* iframe src */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "src"))) {
po->data = strdup(s);
url = url_join(strdup(s), status->content->url);
LOG(("embed '%s'", url));
xmlFree(s);
}
box->object_params = po;
/* start fetch */
plugin_decode(status->content, url, box, po);
return (struct result) {box,0};
}
/**
* plugin_decode
* This function checks that the contents of the plugin_object struct
* are valid. If they are, it initiates the fetch process. If they are
* not, it exits, leaving the box structure as it was on entry. This is
* necessary as there are multiple ways of declaring an object's attributes.
*
* Returns false if the object could not be handled.
*/
bool plugin_decode(struct content* content, char* url, struct box* box,
struct object_params* po)
{
struct plugin_params * pp;
/* Set basehref */
po->basehref = strdup(content->url);
/* Check if the codebase attribute is defined.
* If it is not, set it to the codebase of the current document.
*/
if(po->codebase == 0)
po->codebase = url_join("./", content->url);
else
po->codebase = url_join(po->codebase, content->url);
/* Check that we have some data specified.
* First, check the data attribute.
* Second, check the classid attribute.
* The data attribute takes precedence.
* If neither are specified or if classid begins "clsid:",
* we can't handle this object.
*/
if(po->data == 0 && po->classid == 0) {
return false;
}
if(po->data == 0 && po->classid != 0) {
if(strncasecmp(po->classid, "clsid:", 6) == 0) {
/* Flash */
if(strcasecmp(po->classid, "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000") == 0) {
for(pp = po->params; pp != 0 &&
(strcasecmp(pp->name, "movie") != 0);
pp = pp->next);
if(pp != 0)
url = url_join(pp->value, po->basehref);
else return false;
}
else {
LOG(("ActiveX object - n0"));
return false;
}
}
else {
url = url_join(po->classid, po->codebase);
/* The java plugin doesn't need the .class extension
* so we strip it.
*/
if(stricmp((&po->classid[strlen(po->classid)-6]),
".class") == 0)
po->classid[strlen(po->classid)-6] = 0;
}
}
else {
url = url_join(po->data, po->codebase);
}
/* Check if the declared mime type is understandable.
* Checks type and codetype attributes.
*/
if(po->type != 0) {
if (content_lookup(po->type) == CONTENT_OTHER)
return false;
}
if(po->codetype != 0) {
if (content_lookup(po->codetype) == CONTENT_OTHER)
return false;
}
/* If we've got to here, the object declaration has provided us with
* enough data to enable us to have a go at downloading and displaying it.
*
* We may still find that the object has a MIME type that we can't handle
* when we fetch it (if the type was not specified or is different to that
* given in the attributes).
*/
html_fetch_object(content, url, box);
return true;
}
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