author | richk |
Tue, 17 Jun 2008 13:22:13 +0000 | |
branch | NewGRF_ports |
changeset 10994 | cd9968b6f96b |
parent 10991 | d8811e327d12 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file sortlist_type.h Base types for having sorted lists in GUIs. */ |
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#ifndef SORTLIST_TYPE_H |
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#define SORTLIST_TYPE_H |
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#include "core/enum_type.hpp" |
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#include "core/bitmath_func.hpp" |
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#include "core/mem_func.hpp" |
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#include "core/sort_func.hpp" |
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#include "misc/smallvec.h" |
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#include "date_type.h" |
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enum SortListFlags { |
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VL_NONE = 0, ///< no sort |
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VL_DESC = 1 << 0, ///< sort descending or ascending |
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VL_RESORT = 1 << 1, ///< instruct the code to resort the list in the next loop |
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VL_REBUILD = 1 << 2, ///< rebuild the sort list |
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VL_FIRST_SORT = 1 << 3, ///< sort with qsort first |
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VL_END = 1 << 4, |
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}; |
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DECLARE_ENUM_AS_BIT_SET(SortListFlags); |
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struct Listing { |
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bool order; ///< Ascending/descending |
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byte criteria; ///< Sorting criteria |
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}; |
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template <typename T> |
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class GUIList : public SmallVector<T, 32> { |
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public: |
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typedef int CDECL SortFunction(const T*, const T*); |
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protected: |
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SortFunction* const *func_list; ///< The sort criteria functions |
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SortListFlags flags; ///< used to control sorting/resorting/etc. |
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uint8 sort_type; ///< what criteria to sort on |
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uint16 resort_timer; ///< resort list after a given amount of ticks if set |
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/** |
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* Check if the list is sortable |
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* |
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* @return true if we can sort the list |
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*/ |
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bool IsSortable() const |
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{ |
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return (this->data != NULL && this->items >= 2); |
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} |
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/** |
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* Reset the resort timer |
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*/ |
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void ResetResortTimer() |
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{ |
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/* Resort every 10 days */ |
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this->resort_timer = DAY_TICKS * 10; |
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} |
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public: |
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GUIList() : |
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func_list(NULL), |
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flags(VL_FIRST_SORT), |
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sort_type(0), |
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resort_timer(1) |
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{}; |
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/** |
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* Get the sorttype of the list |
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* |
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* @return The current sorttype |
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*/ |
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uint8 SortType() const |
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{ |
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return this->sort_type; |
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} |
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/** |
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* Set the sorttype of the list |
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* |
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* @param n_type the new sort type |
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*/ |
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void SetSortType(uint8 n_type) |
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{ |
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if (this->sort_type != n_type) { |
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SETBITS(this->flags, VL_RESORT | VL_FIRST_SORT); |
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this->sort_type = n_type; |
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} |
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} |
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/** |
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* Export current sort conditions |
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* |
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* @return the current sort conditions |
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*/ |
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96 |
Listing GetListing() const |
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97 |
{ |
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|
98 |
Listing l; |
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99 |
l.order = HASBITS(this->flags, VL_DESC); |
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|
100 |
l.criteria = this->sort_type; |
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|
101 |
|
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102 |
return l; |
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103 |
} |
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|
104 |
|
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105 |
/** |
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106 |
* Import sort conditions |
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107 |
* |
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108 |
* @param l The sport conditions we want to use |
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109 |
*/ |
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110 |
void SetListing(Listing l) |
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111 |
{ |
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|
112 |
if (l.order) { |
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113 |
SETBITS(this->flags, VL_DESC); |
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114 |
} else { |
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115 |
CLRBITS(this->flags, VL_DESC); |
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116 |
} |
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117 |
this->sort_type = l.criteria; |
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118 |
|
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119 |
SETBITS(this->flags, VL_FIRST_SORT); |
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120 |
} |
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121 |
|
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122 |
/** |
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123 |
* Check if a resort is needed next loop |
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124 |
* If used the resort timer will decrease every call |
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125 |
* till 0. If 0 reached the resort bit will be set and |
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126 |
* the timer will be reset. |
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127 |
* |
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128 |
* @return true if resort bit is set for next loop |
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129 |
*/ |
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130 |
bool NeedResort() |
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131 |
{ |
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132 |
if (--this->resort_timer == 0) { |
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133 |
SETBITS(this->flags, VL_RESORT); |
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134 |
this->ResetResortTimer(); |
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135 |
return true; |
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136 |
} |
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137 |
return false; |
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138 |
} |
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139 |
|
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140 |
/** |
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141 |
* Force a resort next Sort call |
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142 |
* Reset the resort timer if used too. |
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143 |
*/ |
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144 |
void ForceResort() |
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|
145 |
{ |
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|
146 |
SETBITS(this->flags, VL_RESORT); |
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147 |
} |
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|
148 |
|
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|
149 |
/** |
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|
150 |
* Check if the sort order is descending |
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|
151 |
* |
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152 |
* @return true if the sort order is descending |
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|
153 |
*/ |
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|
154 |
bool IsDescSortOrder() const |
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|
155 |
{ |
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|
156 |
return HASBITS(this->flags, VL_DESC); |
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|
157 |
} |
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|
158 |
|
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|
159 |
/** |
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|
160 |
* Toogle the sort order |
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|
161 |
* Since that is the worst condition for the sort function |
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|
162 |
* reverse the list here. |
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|
163 |
*/ |
10994
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|
164 |
void ToggleSortOrder() |
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|
165 |
{ |
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|
166 |
this->flags ^= VL_DESC; |
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|
167 |
|
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|
168 |
if (this->IsSortable()) MemReverseT(this->data, this->items); |
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|
169 |
} |
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|
170 |
|
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|
171 |
/** |
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|
172 |
* Sort the list. |
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|
173 |
* For the first sorting we use qsort since it is |
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|
174 |
* faster for irregular sorted data. After that we |
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175 |
* use gsort. |
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176 |
* |
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177 |
* @param compare The function to compare two list items |
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178 |
* @return true if the list sequence has been altered |
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179 |
* */ |
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180 |
bool Sort(SortFunction *compare) |
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181 |
{ |
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182 |
/* Do not sort if the resort bit is not set */ |
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|
183 |
if (!HASBITS(this->flags, VL_RESORT)) return false; |
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|
184 |
|
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|
185 |
CLRBITS(this->flags, VL_RESORT); |
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|
186 |
|
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|
187 |
this->ResetResortTimer(); |
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|
188 |
|
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|
189 |
/* Do not sort when the list is not sortable */ |
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if (!this->IsSortable()) return false; |
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191 |
|
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const bool desc = HASBITS(this->flags, VL_DESC); |
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193 |
|
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194 |
if (HASBITS(this->flags, VL_FIRST_SORT)) { |
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CLRBITS(this->flags, VL_FIRST_SORT); |
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196 |
|
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QSortT(this->data, this->items, compare, desc); |
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198 |
return true; |
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199 |
} |
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200 |
|
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GSortT(this->data, this->items, compare, desc); |
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202 |
return true; |
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203 |
} |
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204 |
|
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205 |
/** |
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206 |
* Hand the array of sort function pointers to the sort list |
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207 |
* |
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* @param n_funcs The pointer to the first sort func |
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209 |
*/ |
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210 |
void SetSortFuncs(SortFunction* const* n_funcs) |
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211 |
{ |
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212 |
this->func_list = n_funcs; |
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213 |
} |
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214 |
|
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215 |
/** |
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216 |
* Overload of Sort() |
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* Overloaded to reduce external code |
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* |
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* @return true if the list sequence has been altered |
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*/ |
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bool Sort() |
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222 |
{ |
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assert(this->func_list != NULL); |
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return this->Sort(this->func_list[this->sort_type]); |
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} |
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226 |
|
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/** |
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* Check if a rebuild is needed |
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* @return true if a rebuild is needed |
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230 |
*/ |
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bool NeedRebuild() const |
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232 |
{ |
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return HASBITS(this->flags, VL_REBUILD); |
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234 |
} |
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235 |
|
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236 |
/** |
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* Force that a rebuild is needed |
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238 |
*/ |
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239 |
void ForceRebuild() |
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240 |
{ |
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241 |
SETBITS(this->flags, VL_REBUILD); |
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242 |
} |
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243 |
|
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244 |
/** |
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245 |
* Notify the sortlist that the rebuild is done |
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246 |
* |
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* @note This forces a resort |
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248 |
*/ |
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249 |
void RebuildDone() |
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250 |
{ |
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CLRBITS(this->flags, VL_REBUILD); |
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SETBITS(this->flags, VL_RESORT | VL_FIRST_SORT); |
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253 |
} |
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}; |
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256 |
#endif /* SORTLIST_TYPE_H */ |