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

use std::marker::PhantomData;
use sys;

use super::{ImGuiCond, ImGuiTreeNodeFlags, ImStr, Ui};

#[must_use]
pub struct TreeNode<'ui, 'p> {
    id: &'p ImStr,
    label: Option<&'p ImStr>,
    opened: bool,
    opened_cond: ImGuiCond,
    flags: ImGuiTreeNodeFlags,
    _phantom: PhantomData<&'ui Ui<'ui>>,
}

impl<'ui, 'p> TreeNode<'ui, 'p> {
    pub fn new(_: &Ui<'ui>, id: &'p ImStr) -> Self {
        TreeNode {
            id,
            label: None,
            opened: false,
            opened_cond: ImGuiCond::empty(),
            flags: ImGuiTreeNodeFlags::empty(),
            _phantom: PhantomData,
        }
    }
    #[inline]
    pub fn label(mut self, label: &'p ImStr) -> Self {
        self.label = Some(label);
        self
    }
    #[inline]
    pub fn opened(mut self, opened: bool, cond: ImGuiCond) -> Self {
        self.opened = opened;
        self.opened_cond = cond;
        self
    }
    #[inline]
    pub fn flags(mut self, flags: ImGuiTreeNodeFlags) -> Self {
        self.flags = flags;
        self
    }
    #[inline]
    pub fn selected(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Selected, value);
        self
    }
    #[inline]
    pub fn framed(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Framed, value);
        self
    }
    #[inline]
    pub fn allow_item_overlap(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::AllowItemOverlap, value);
        self
    }
    #[inline]
    pub fn no_tree_push_on_open(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::NoTreePushOnOpen, value);
        self
    }
    #[inline]
    pub fn no_auto_open_on_log(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::NoAutoOpenOnLog, value);
        self
    }
    #[inline]
    pub fn default_open(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::DefaultOpen, value);
        self
    }
    #[inline]
    pub fn open_on_double_click(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::OpenOnDoubleClick, value);
        self
    }
    #[inline]
    pub fn open_on_arrow(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::OpenOnArrow, value);
        self
    }
    #[inline]
    pub fn leaf(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Leaf, value);
        self
    }
    #[inline]
    pub fn bullet(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Bullet, value);
        self
    }
    #[inline]
    pub fn frame_padding(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::FramePadding, value);
        self
    }
    pub fn build<F: FnOnce()>(self, f: F) {
        let render = unsafe {
            if !self.opened_cond.is_empty() {
                sys::igSetNextTreeNodeOpen(self.opened, self.opened_cond);
            }
            sys::igTreeNodeExStrStr(
                self.id.as_ptr(),
                self.flags,
                super::fmt_ptr(),
                self.label.unwrap_or(self.id).as_ptr(),
            )
        };
        if render {
            f();
            unsafe { sys::igTreePop() };
        }
    }
}

#[must_use]
pub struct CollapsingHeader<'ui, 'p> {
    label: &'p ImStr,
    // Some flags are automatically set in ImGui::CollapsingHeader, so
    // we only support a sensible subset here
    flags: ImGuiTreeNodeFlags,
    _phantom: PhantomData<&'ui Ui<'ui>>,
}

impl<'ui, 'p> CollapsingHeader<'ui, 'p> {
    pub fn new(_: &Ui<'ui>, label: &'p ImStr) -> Self {
        CollapsingHeader {
            label,
            flags: ImGuiTreeNodeFlags::empty(),
            _phantom: PhantomData,
        }
    }
    #[inline]
    pub fn flags(mut self, flags: ImGuiTreeNodeFlags) -> Self {
        self.flags = flags;
        self
    }
    #[inline]
    pub fn selected(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Selected, value);
        self
    }
    #[inline]
    pub fn default_open(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::DefaultOpen, value);
        self
    }
    #[inline]
    pub fn open_on_double_click(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::OpenOnDoubleClick, value);
        self
    }
    #[inline]
    pub fn open_on_arrow(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::OpenOnArrow, value);
        self
    }
    #[inline]
    pub fn leaf(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Leaf, value);
        self
    }
    #[inline]
    pub fn bullet(mut self, value: bool) -> Self {
        self.flags.set(ImGuiTreeNodeFlags::Bullet, value);
        self
    }
    pub fn build(self) -> bool {
        unsafe { sys::igCollapsingHeader(self.label.as_ptr(), self.flags) }
    }
}