Back to Home

ESO Lua File v100019

libraries/utility/zo_treecontrol.lua

[◄ back to folders ]
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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
--[[
The tree node
--]]
local ZO_TreeNode = ZO_Object:Subclass()
function ZO_TreeNode:New(myTree, controlData, myParent, childIndent)
    local node = ZO_Object.New(self)
    node.m_OwningTree       = myTree
    node.m_Control          = controlData
    node.m_Expanded         = true
    node.m_Showing          = true
    node.m_Child            = nil
    node.m_Sibling          = nil
    node.m_Parent           = myParent
    node.m_ExpandedCallback = nil
    node.m_ChildIndent      = childIndent
    
    return node
end
function ZO_TreeNode:SetExpandedCallback(callback)
    self.m_ExpandedCallback = callback
end
local function DetermineVisibility(node)
    if(node)
    then
        local parentShowing = true
        local parentExpanded = true
        
        if(node.m_Parent)
        then
            parentShowing = node.m_Parent:IsShowing()
            parentExpanded = node.m_Parent:IsExpanded()
        end
        
        node.m_Showing = parentShowing and parentExpanded
        if(node.m_Child)
        then
            DetermineVisibility(node.m_Child)
        end
        if(node.m_Sibling)
        then
            DetermineVisibility(node.m_Sibling)
        end
    end
end
function ZO_TreeNode:ToggleExpanded(expanded)
    if(expanded == nil) then
        expanded = not self.m_Expanded
    end
    
    self.m_Expanded = expanded
    
    if(self.m_ExpandedCallback) then
        self.m_ExpandedCallback(self, expanded)
    end
       
    if(expanded) then   
        --climb the tree opening un-expanded parents
        local lastChangedParent = self
        local curParent = self.m_Parent
        while(curParent ~= nil) do
            if(not curParent.m_Expanded) then
                curParent.m_Expanded = true
                if(curParent.m_ExpandedCallback) then
                    curParent.m_ExpandedCallback(curParent, true)
                end
                lastChangedParent = curParent
            end
            curParent = curParent.m_Parent
        end
        --update visibility from the highest changed node
        DetermineVisibility(lastChangedParent)
    else
        DetermineVisibility(self)
    end
    
    -- Update the whole tree.
    self.m_OwningTree:Update()
end
function ZO_TreeNode:IsExpanded()
    return self.m_Expanded
end
function ZO_TreeNode:IsShowing()
    return self.m_Showing
end
function ZO_TreeNode:HasChildren()
    return (self.m_Child ~= nil)
end
function ZO_TreeNode:GetNestingLevel()
    local nestingLevel = 0
    local ancestor = self.m_Parent
    
    while(ancestor ~= self.m_OwningTree.m_Root)
    do
        nestingLevel = nestingLevel + 1
        ancestor = ancestor.m_Parent
    end
    
    return nestingLevel
end
function ZO_TreeNode:GetControl()
    return self.m_Control
end
function ZO_TreeNode:GetOwningTree()
    return self.m_OwningTree
end
function ZO_TreeNode:GetNextSibling()
    return self.m_Sibling
end
function ZO_TreeNode:GetParent()
    return self.m_Parent
end
function ZO_TreeNode:GetChildIndent()
    return self.m_ChildIndent
end
function ZO_TreeNode:SetOffsetY(offsetY)
    self.m_OffsetY = offsetY
end
--[[
The tree control
--]]
ZO_TreeControl = ZO_Object:Subclass()
local DEFAULT_INDENT_OFFSET = 10
local DEFAULT_LINE_SPACING  = 5
function ZO_TreeControl:New(initialAnchor, indentXOffset, verticalSpacing)
    local tree = ZO_Object.New(self)
    
    tree.m_Root             = ZO_TreeNode:New(tree)
    tree.m_OffsetX          = indentXOffset or DEFAULT_INDENT_OFFSET
    tree.m_OffsetY          = verticalSpacing or DEFAULT_LINE_SPACING
    tree.m_InitialAnchor    = initialAnchor
    return tree
end
function ZO_TreeControl:AddChild(atNode, insertedControl, childIndent)
    atNode = atNode or self.m_Root
    
    if(atNode == nil)
    then
        return nil
    end
    
    -- If root is the insertion point, and there is no child add the new node as Root's first child
    if((atNode == self.m_Root) and (self.m_Root.m_Child == nil))
    then
        local newNode = ZO_TreeNode:New(self, insertedControl, self.m_Root, childIndent)
        
        self.m_Root.m_Child = newNode        
        return newNode
    end
    
    -- Find the last sibling of atNode's first child and insert after that.
    if(atNode.m_Child == nil)
    then
        local newNode = ZO_TreeNode:New(self, insertedControl, atNode, childIndent)
        
        atNode.m_Child = newNode
        return newNode
    end
    return self:AddSibling(atNode.m_Child, insertedControl, childIndent)
end
local ADD_HERE = 1
local ADD_ON_END = 2
local function AddSiblingInternal(self, atNode, insertedControl, where, childIndent)
    atNode = atNode or self.m_Root.m_Child
    
    if((not atNode) or (atNode == self.m_Root))
    then
        return nil
    end
    
    local newNode = ZO_TreeNode:New(self, insertedControl, atNode.m_Parent, childIndent)
    if(where == ADD_ON_END) then
        while(atNode.m_Sibling)
        do
            atNode = atNode.m_Sibling
        end
    
        atNode.m_Sibling = newNode
    else     
        newNode.m_Sibling = atNode.m_Sibling
        atNode.m_Sibling = newNode   
    end
    
    return newNode
end
function ZO_TreeControl:AddSibling(atNode, insertedControl, childIndent)
    return AddSiblingInternal(self, atNode, insertedControl, ADD_ON_END, childIndent)
end
function ZO_TreeControl:AddSiblingAfterNode(atNode, insertedControl, childIndent)
    return AddSiblingInternal(self, atNode, insertedControl, ADD_HERE, childIndent)
end
-- NOTE: This removes entire subtrees, but does not inform the controls in those subtrees that they have been
-- removed. That needs to be handled by whatever is calling RemoveNode.
function ZO_TreeControl:RemoveNode(node)
    if(node == self.m_Root) 
    then
        self:Clear()
        return
    end
    
    if(node.m_Parent)
    then
        if(node.m_Parent.m_Child == node)
        then
            node.m_Parent.m_Child = node.m_Sibling
            return
        end
        
        local previousSibling = nil
        local currentSibling = node.m_Parent.m_Child
        
        if(currentSibling == nil) 
        then 
            d("ZO_TreeControl: Corrupted tree. Parent of: ", node, "...has no children.") 
            return 
        end
                
        while((currentSibling ~= node) and (currentSibling ~= nil))
        do
            previousSibling = currentSibling
            currentSibling = currentSibling.m_Sibling
        end
        
        if(currentSibling == node)
        then
            previousSibling.m_Sibling = node.m_Sibling
        end
    end
end
function ZO_TreeControl:Clear()
    self.m_Root = ZO_TreeNode:New(self)
end
function ZO_TreeControl:Update(updateFromNode, indent, anchor, firstControl)
    local node  = updateFromNode or self.m_Root
    indent      = indent or 0
    anchor      = anchor or ZO_Anchor:New(self.m_InitialAnchor)
    
    if(firstControl == nil) then
        firstControl = true
    end
        
    if(node)
    then
        local hidden = not node:IsShowing()
        
        if(node.m_Control)
        then
            node.m_Control:SetHidden(hidden)
                        
            if(not hidden)
            then
                if(firstControl) then
                    self.m_InitialAnchor:Set(node.m_Control)
                    firstControl = false
                else
                    anchor:SetOffsets(indent, node.m_OffsetY or self.m_OffsetY)                
                    anchor:Set(node.m_Control)           
                end     
                
                anchor:SetTarget(node.m_Control)
                anchor:SetRelativePoint(self.m_relativePoint or BOTTOMLEFT)
            end
        end
        
        local backOffIndent = false
        
        if(node.m_Child)
        then
            if(node == self.m_Root)
            then
                indent = 0
            else
                indent = node:GetChildIndent() or self.m_OffsetX
            end
                        
            anchor, indent = self:Update(node.m_Child, indent, anchor, firstControl)
            backOffIndent = node.m_Child:IsShowing()
        end
        
        if(backOffIndent)
        then
            indent = indent - (node:GetChildIndent() or self.m_OffsetX)
        else
            indent = 0
        end        
        
        node = node.m_Sibling
        
        if(node)
        then
            return self:Update(node, indent, anchor, firstControl)
        end
    end
    
    return anchor, indent
end
function ZO_TreeControl:SetRelativePoint(relativePoint)
    self.m_relativePoint = relativePoint
end
function ZO_TreeControl:SetIndent(indentX)
    self.m_OffsetX = indentX
end