Initial experiment in adding js support to w3m.

2025-08-16 19:43:11 -04:00
parent e48858127f
commit 6cf0975fe1
82 changed files with 107987 additions and 2842 deletions
--- a/js/w3m_dom.h
+++ b/js/w3m_dom.h
@@ -0,0 +1,127 @@
+/*
+ * w3m DOM Implementation Header
+ * 
+ * This file defines the Document Object Model structures and interfaces
+ * for JavaScript integration in w3m. It provides a minimal but functional
+ * DOM representation that maps to w3m's internal buffer structures.
+ */
+
+#ifndef W3M_DOM_H
+#define W3M_DOM_H
+
+#ifdef USE_JAVASCRIPT
+
+#include "quickjs/quickjs.h"
+#include "w3m_javascript.h"
+
+/* Forward declarations */
+struct _Buffer;
+struct Line;
+struct Anchor;
+struct FormItem;
+
+/* Simplified DOM Element Structure */
+typedef struct W3MElement {
+    char *tagName;              /* Element tag name (uppercase) */
+    char *id;                   /* Element ID attribute */
+    char *className;            /* CSS class names */
+    
+    /* Tree structure */
+    struct W3MElement *parent;
+    struct W3MElement *firstChild;
+    struct W3MElement *lastChild;
+    struct W3MElement *nextSibling;
+    struct W3MElement *previousSibling;
+    
+    /* w3m mappings */
+    struct Line *line;          /* Associated line in buffer */
+    int line_pos;               /* Position within line */
+    struct Anchor *anchor;      /* If element is interactive */
+    struct FormItem *form_item; /* If element is form control */
+    
+    /* Attributes and content */
+    struct {
+        char **names;
+        char **values;
+        int count;
+        int capacity;
+    } attributes;
+    
+    char *textContent;          /* Text content of element */
+    char *innerHTML;            /* HTML content (basic) */
+    
+    /* JavaScript object reference */
+    JSValue js_object;
+    int js_object_valid;
+} W3MElement;
+
+/* Document structure */
+typedef struct W3MDocument {
+    W3MElement *documentElement;  /* <html> element */
+    W3MElement *body;            /* <body> element */
+    W3MElement *head;            /* <head> element */
+    Buffer *buffer;              /* Associated w3m buffer */
+    
+    char *title;                 /* Document title */
+    char *URL;                   /* Document URL */
+    char *domain;                /* Document domain */
+    
+    /* Element collections */
+    W3MElement **all_elements;   /* All elements in document */
+    int element_count;
+    int element_capacity;
+    
+    /* JavaScript object reference */
+    JSValue js_document;
+} W3MDocument;
+
+/* DOM Creation and Management */
+W3MDocument *w3m_dom_create_document(Buffer *buf);
+void w3m_dom_destroy_document(W3MDocument *doc);
+W3MElement *w3m_dom_create_element(const char *tagName);
+void w3m_dom_destroy_element(W3MElement *elem);
+
+/* DOM Tree Operations */
+void w3m_dom_append_child(W3MElement *parent, W3MElement *child);
+void w3m_dom_remove_child(W3MElement *parent, W3MElement *child);
+void w3m_dom_insert_before(W3MElement *parent, W3MElement *newChild, W3MElement *referenceChild);
+
+/* Element Search and Access */
+W3MElement *w3m_dom_get_element_by_id(W3MDocument *doc, const char *id);
+W3MElement **w3m_dom_get_elements_by_tag_name(W3MDocument *doc, const char *tagName, int *count);
+W3MElement **w3m_dom_get_elements_by_class_name(W3MDocument *doc, const char *className, int *count);
+
+/* Attribute Management */
+const char *w3m_dom_get_attribute(W3MElement *elem, const char *name);
+void w3m_dom_set_attribute(W3MElement *elem, const char *name, const char *value);
+void w3m_dom_remove_attribute(W3MElement *elem, const char *name);
+int w3m_dom_has_attribute(W3MElement *elem, const char *name);
+
+/* Content Access and Modification */
+char *w3m_dom_get_text_content(W3MElement *elem);
+void w3m_dom_set_text_content(W3MElement *elem, const char *text);
+char *w3m_dom_get_inner_html(W3MElement *elem);
+void w3m_dom_set_inner_html(W3MElement *elem, const char *html);
+
+/* Buffer Integration */
+void w3m_dom_build_from_buffer(W3MDocument *doc, Buffer *buf);
+void w3m_dom_update_buffer(W3MDocument *doc);
+W3MElement *w3m_dom_find_element_at_position(W3MDocument *doc, int line_num, int col);
+
+/* JavaScript Binding */
+void w3m_dom_bind_to_js(W3MJSContext *ctx, W3MDocument *doc);
+JSValue w3m_dom_element_to_js(W3MJSContext *ctx, W3MElement *elem);
+W3MElement *w3m_dom_js_to_element(W3MJSContext *ctx, JSValue val);
+
+/* JavaScript DOM API Functions */
+JSValue js_getElementById(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+JSValue js_getElementsByTagName(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+JSValue js_createElement(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+JSValue js_element_getAttribute(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+JSValue js_element_setAttribute(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+JSValue js_element_get_textContent(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+JSValue js_element_set_textContent(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
+
+#endif /* USE_JAVASCRIPT */
+
+#endif /* W3M_DOM_H */