1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2018-2020, Adam Hodgen <ant1441@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "DOMTreeModel.h"
#include <AK/JsonObject.h>
#include <AK/StringBuilder.h>
#include <LibGUI/TreeView.h>
#include <LibGfx/Palette.h>
#include <ctype.h>
namespace Web {
DOMTreeModel::DOMTreeModel(JsonObject dom_tree, GUI::TreeView& tree_view)
: m_tree_view(tree_view)
, m_dom_tree(move(dom_tree))
{
m_document_icon.set_bitmap_for_size(16, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/filetype-html.png").release_value_but_fixme_should_propagate_errors());
m_element_icon.set_bitmap_for_size(16, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/inspector-object.png").release_value_but_fixme_should_propagate_errors());
m_text_icon.set_bitmap_for_size(16, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/filetype-unknown.png").release_value_but_fixme_should_propagate_errors());
map_dom_nodes_to_parent(nullptr, &m_dom_tree);
}
DOMTreeModel::~DOMTreeModel() = default;
GUI::ModelIndex DOMTreeModel::index(int row, int column, const GUI::ModelIndex& parent) const
{
if (!parent.is_valid()) {
return create_index(row, column, &m_dom_tree);
}
auto const& parent_node = *static_cast<JsonObject const*>(parent.internal_data());
auto const* children = get_children(parent_node);
if (!children)
return create_index(row, column, &m_dom_tree);
auto const& child_node = children->at(row).as_object();
return create_index(row, column, &child_node);
}
GUI::ModelIndex DOMTreeModel::parent_index(const GUI::ModelIndex& index) const
{
// FIXME: Handle the template element (child elements are not stored in it, all of its children are in its document fragment "content")
// Probably in the JSON generation in Node.cpp?
if (!index.is_valid())
return {};
auto const& node = *static_cast<JsonObject const*>(index.internal_data());
auto const* parent_node = get_parent(node);
if (!parent_node)
return {};
// If the parent is the root document, we know it has index 0, 0
if (parent_node == &m_dom_tree) {
return create_index(0, 0, parent_node);
}
// Otherwise, we need to find the grandparent, to find the index of parent within that
auto const* grandparent_node = get_parent(*parent_node);
VERIFY(grandparent_node);
auto const* grandparent_children = get_children(*grandparent_node);
if (!grandparent_children)
return {};
for (size_t grandparent_child_index = 0; grandparent_child_index < grandparent_children->size(); ++grandparent_child_index) {
auto const& child = grandparent_children->at(grandparent_child_index).as_object();
if (&child == parent_node)
return create_index(grandparent_child_index, 0, parent_node);
}
return {};
}
int DOMTreeModel::row_count(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return 1;
auto const& node = *static_cast<JsonObject const*>(index.internal_data());
auto const* children = get_children(node);
return children ? children->size() : 0;
}
int DOMTreeModel::column_count(const GUI::ModelIndex&) const
{
return 1;
}
static String with_whitespace_collapsed(StringView string)
{
StringBuilder builder;
for (size_t i = 0; i < string.length(); ++i) {
if (isspace(string[i])) {
builder.append(' ');
while (i < string.length()) {
if (isspace(string[i])) {
++i;
continue;
}
builder.append(string[i]);
break;
}
continue;
}
builder.append(string[i]);
}
return builder.to_string();
}
GUI::Variant DOMTreeModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
{
auto const& node = *static_cast<JsonObject const*>(index.internal_data());
auto node_name = node.get("name").as_string();
auto type = node.get("type").as_string_or("unknown");
if (role == GUI::ModelRole::ForegroundColor) {
// FIXME: Allow models to return a foreground color *role*.
// Then we won't need to have a GUI::TreeView& member anymore.
if (type == "comment"sv)
return m_tree_view.palette().syntax_comment();
if (type == "pseudo-element"sv)
return m_tree_view.palette().syntax_type();
return {};
}
if (role == GUI::ModelRole::Icon) {
if (type == "document")
return m_document_icon;
if (type == "element")
return m_element_icon;
// FIXME: More node type icons?
return m_text_icon;
}
if (role == GUI::ModelRole::Display) {
if (type == "text")
return with_whitespace_collapsed(node.get("text").as_string());
if (type == "comment"sv)
return String::formatted("<!--{}-->", node.get("data"sv).as_string());
if (type != "element")
return node_name;
StringBuilder builder;
builder.append('<');
builder.append(node_name.to_lowercase());
if (node.has("attributes")) {
auto attributes = node.get("attributes").as_object();
attributes.for_each_member([&builder](auto& name, JsonValue const& value) {
builder.append(' ');
builder.append(name);
builder.append('=');
builder.append('"');
builder.append(value.to_string());
builder.append('"');
});
}
builder.append('>');
return builder.to_string();
}
return {};
}
void DOMTreeModel::map_dom_nodes_to_parent(JsonObject const* parent, JsonObject const* node)
{
m_dom_node_to_parent_map.set(node, parent);
m_node_id_to_dom_node_map.set(node->get("id").to_i32(), node);
auto const* children = get_children(*node);
if (!children)
return;
children->for_each([&](auto const& child) {
auto const& child_node = child.as_object();
map_dom_nodes_to_parent(node, &child_node);
});
}
GUI::ModelIndex DOMTreeModel::index_for_node(i32 node_id, Optional<Web::CSS::Selector::PseudoElement> pseudo_element) const
{
auto node = m_node_id_to_dom_node_map.get(node_id).value_or(nullptr);
if (node) {
if (pseudo_element.has_value()) {
// Find pseudo-element child of the node.
auto node_children = get_children(*node);
for (size_t i = 0; i < node_children->size(); i++) {
auto& child = node_children->at(i).as_object();
if (!child.has("pseudo-element"))
continue;
auto child_pseudo_element = child.get("pseudo-element");
if (!child_pseudo_element.is_i32())
continue;
if (child_pseudo_element.as_i32() == to_underlying(pseudo_element.value()))
return create_index(i, 0, &child);
}
} else {
auto* parent = get_parent(*node);
if (!parent)
return {};
auto parent_children = get_children(*parent);
for (size_t i = 0; i < parent_children->size(); i++) {
if (&parent_children->at(i).as_object() == node) {
return create_index(i, 0, node);
}
}
}
}
dbgln("Didn't find index for node {}, pseudo-element {}!", node_id, pseudo_element.has_value() ? CSS::pseudo_element_name(pseudo_element.value()) : "NONE");
return {};
}
}
|
