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800
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1 /* vi:set ts=8 sts=4 sw=4:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9
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10 /*
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11 * popupmnu.c: Popup menu (PUM)
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12 */
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13 #include "vim.h"
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14
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15 #if defined(FEAT_INS_EXPAND) || defined(PROTO)
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16
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17 static pumitem_T *pum_array = NULL; /* items of displayed pum */
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18 static int pum_size; /* nr of items in "pum_array" */
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19 static int pum_selected; /* index of selected item or -1 */
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20 static int pum_first = 0; /* index of top item */
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21
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22 static int pum_height; /* nr of displayed pum items */
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23 static int pum_width; /* width of displayed pum items */
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24 static int pum_base_width; /* width of pum items base */
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25 static int pum_kind_width; /* width of pum items kind column */
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26 static int pum_scrollbar; /* TRUE when scrollbar present */
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27
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28 static int pum_row; /* top row of pum */
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29 static int pum_col; /* left column of pum */
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30
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31 static int pum_do_redraw = FALSE; /* do redraw anyway */
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32
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838
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33 static int pum_set_selected __ARGS((int n, int repeat));
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800
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34
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35 #define PUM_DEF_HEIGHT 10
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36 #define PUM_DEF_WIDTH 15
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37
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38 /*
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39 * Show the popup menu with items "array[size]".
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40 * "array" must remain valid until pum_undisplay() is called!
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41 * When possible the leftmost character is aligned with screen column "col".
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42 * The menu appears above the screen line "row" or at "row" + "height" - 1.
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43 */
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44 void
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45 pum_display(array, size, selected)
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46 pumitem_T *array;
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47 int size;
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48 int selected; /* index of initially selected item, none if
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49 out of range */
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50 {
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51 int w;
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52 int def_width;
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53 int max_width;
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54 int kind_width;
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55 int extra_width;
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56 int i;
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57 int top_clear;
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58 int row;
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59 int height;
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60 int col;
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61 int above_row = cmdline_row;
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838
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62 int redo_count = 0;
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800
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63
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64 redo:
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65 def_width = PUM_DEF_WIDTH;
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66 max_width = 0;
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67 kind_width = 0;
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68 extra_width = 0;
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69
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70 /* Pretend the pum is already there to avoid that must_redraw is set when
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71 * 'cuc' is on. */
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72 pum_array = (pumitem_T *)1;
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73 validate_cursor_col();
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74 pum_array = NULL;
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75
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76 row = curwin->w_cline_row + W_WINROW(curwin);
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77 height = curwin->w_cline_height;
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78 col = curwin->w_wcol + W_WINCOL(curwin) - curwin->w_leftcol;
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79
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80 if (firstwin->w_p_pvw)
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81 top_clear = firstwin->w_height;
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82 else
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83 top_clear = 0;
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84
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85 /* When the preview window is at the bottom stop just above it. Also
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86 * avoid drawing over the status line so that it's clear there is a window
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87 * boundary. */
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88 if (lastwin->w_p_pvw)
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89 above_row -= lastwin->w_height + lastwin->w_status_height + 1;
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90
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91 /*
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92 * Figure out the size and position of the pum.
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93 */
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94 if (size < PUM_DEF_HEIGHT)
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95 pum_height = size;
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96 else
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97 pum_height = PUM_DEF_HEIGHT;
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98 if (p_ph > 0 && pum_height > p_ph)
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99 pum_height = p_ph;
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100
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101 /* Put the pum below "row" if possible. If there are few lines decide on
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102 * where there is more room. */
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103 if (row >= above_row - pum_height
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104 && row > (above_row - top_clear - height) / 2)
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105 {
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106 /* pum above "row" */
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107 if (row >= size)
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108 {
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109 pum_row = row - size;
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110 pum_height = size;
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111 }
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112 else
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113 {
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114 pum_row = 0;
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115 pum_height = row;
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116 }
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117 if (p_ph > 0 && pum_height > p_ph)
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118 {
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119 pum_row += pum_height - p_ph;
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120 pum_height = p_ph;
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121 }
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122 }
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123 else
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124 {
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125 /* pum below "row" */
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126 pum_row = row + height;
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127 if (size > above_row - pum_row)
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128 pum_height = above_row - pum_row;
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129 else
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130 pum_height = size;
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131 if (p_ph > 0 && pum_height > p_ph)
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132 pum_height = p_ph;
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133 }
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134
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135 /* don't display when we only have room for one line */
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136 if (pum_height < 1 || (pum_height == 1 && size > 1))
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137 return;
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138
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139 /* If there is a preview window at the top avoid drawing over it. */
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140 if (firstwin->w_p_pvw
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141 && pum_row < firstwin->w_height
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142 && pum_height > firstwin->w_height + 4)
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143 {
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144 pum_row += firstwin->w_height;
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145 pum_height -= firstwin->w_height;
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146 }
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147
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148 /* Compute the width of the widest match and the widest extra. */
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149 for (i = 0; i < size; ++i)
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150 {
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151 w = vim_strsize(array[i].pum_text);
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152 if (max_width < w)
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153 max_width = w;
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154 if (array[i].pum_kind != NULL)
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155 {
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156 w = vim_strsize(array[i].pum_kind) + 1;
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157 if (kind_width < w)
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158 kind_width = w;
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159 }
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160 if (array[i].pum_extra != NULL)
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161 {
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162 w = vim_strsize(array[i].pum_extra) + 1;
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163 if (extra_width < w)
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164 extra_width = w;
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165 }
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166 }
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167 pum_base_width = max_width;
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168 pum_kind_width = kind_width;
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169
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170 /* if there are more items than room we need a scrollbar */
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171 if (pum_height < size)
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172 {
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173 pum_scrollbar = 1;
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174 ++max_width;
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175 }
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176 else
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177 pum_scrollbar = 0;
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178
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179 if (def_width < max_width)
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180 def_width = max_width;
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181
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182 if (col < Columns - PUM_DEF_WIDTH || col < Columns - max_width)
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183 {
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184 /* align pum column with "col" */
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185 pum_col = col;
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186 pum_width = Columns - pum_col - pum_scrollbar;
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187 if (pum_width > max_width + kind_width + extra_width + 1
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188 && pum_width > PUM_DEF_WIDTH)
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189 {
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190 pum_width = max_width + kind_width + extra_width + 1;
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191 if (pum_width < PUM_DEF_WIDTH)
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192 pum_width = PUM_DEF_WIDTH;
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193 }
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194 }
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195 else if (Columns < def_width)
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196 {
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197 /* not enough room, will use what we have */
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198 pum_col = 0;
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199 pum_width = Columns - 1;
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200 }
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201 else
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202 {
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203 if (max_width > PUM_DEF_WIDTH)
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204 max_width = PUM_DEF_WIDTH; /* truncate */
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205 pum_col = Columns - max_width;
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206 pum_width = max_width - pum_scrollbar;
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207 }
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208
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209 pum_array = array;
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210 pum_size = size;
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211
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212 /* Set selected item and redraw. If the window size changed need to redo
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838
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213 * the positioning. Limit this to two times, when there is not much
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214 * room the window size will keep changing. */
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215 if (pum_set_selected(selected, redo_count) && ++redo_count <= 2)
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800
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216 goto redo;
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217 }
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218
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219 /*
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220 * Redraw the popup menu, using "pum_first" and "pum_selected".
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221 */
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222 void
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223 pum_redraw()
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224 {
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225 int row = pum_row;
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226 int col;
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227 int attr_norm = highlight_attr[HLF_PNI];
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228 int attr_select = highlight_attr[HLF_PSI];
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229 int attr_scroll = highlight_attr[HLF_PSB];
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230 int attr_thumb = highlight_attr[HLF_PST];
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231 int attr;
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232 int i;
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233 int idx;
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234 char_u *s;
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235 char_u *p = NULL;
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236 int totwidth, width, w;
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237 int thumb_pos = 0;
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238 int thumb_heigth = 1;
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239 int round;
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240 int n;
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241
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242 if (pum_scrollbar)
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243 {
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244 thumb_heigth = pum_height * pum_height / pum_size;
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245 if (thumb_heigth == 0)
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246 thumb_heigth = 1;
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247 thumb_pos = (pum_first * (pum_height - thumb_heigth)
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248 + (pum_size - pum_height) / 2)
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249 / (pum_size - pum_height);
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250 }
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251
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252 for (i = 0; i < pum_height; ++i)
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253 {
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254 idx = i + pum_first;
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255 attr = (idx == pum_selected) ? attr_select : attr_norm;
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256
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257 /* prepend a space if there is room */
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258 if (pum_col > 0)
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259 screen_putchar(' ', row, pum_col - 1, attr);
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260
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261 /* Display each entry, use two spaces for a Tab.
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262 * Do this 3 times: For the main text, kind and extra info */
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263 col = pum_col;
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264 totwidth = 0;
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265 for (round = 1; round <= 3; ++round)
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266 {
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267 width = 0;
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268 s = NULL;
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269 switch (round)
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270 {
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271 case 1: p = pum_array[idx].pum_text; break;
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272 case 2: p = pum_array[idx].pum_kind; break;
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273 case 3: p = pum_array[idx].pum_extra; break;
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274 }
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275 if (p != NULL)
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276 for ( ; ; mb_ptr_adv(p))
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277 {
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278 if (s == NULL)
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279 s = p;
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280 w = ptr2cells(p);
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281 if (*p == NUL || *p == TAB || totwidth + w > pum_width)
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282 {
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283 /* Display the text that fits or comes before a Tab. */
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835
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284 screen_puts_len(s, (int)(p - s), row, col, attr);
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800
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285 col += width;
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286
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287 if (*p != TAB)
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288 break;
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289
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290 /* Display two spaces for a Tab. */
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291 screen_puts_len((char_u *)" ", 2, row, col, attr);
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292 col += 2;
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293 totwidth += 2;
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294 s = NULL; /* start text at next char */
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295 width = 0;
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296 }
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297 else
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298 width += w;
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299 }
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300
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301 if (round > 1)
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302 n = pum_kind_width + 1;
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303 else
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304 n = 1;
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305
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306 /* Stop when there is nothing more to display. */
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307 if (round == 3
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308 || (round == 2 && pum_array[idx].pum_extra == NULL)
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309 || (round == 1 && pum_array[idx].pum_kind == NULL
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310 && pum_array[idx].pum_extra == NULL)
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311 || pum_base_width + n >= pum_width)
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312 break;
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313 screen_fill(row, row + 1, col, pum_col + pum_base_width + n,
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314 ' ', ' ', attr);
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315 col = pum_col + pum_base_width + n;
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316 totwidth = pum_base_width + n;
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317 }
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318
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319 screen_fill(row, row + 1, col, pum_col + pum_width, ' ', ' ', attr);
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320 if (pum_scrollbar > 0)
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321 screen_putchar(' ', row, pum_col + pum_width,
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322 i >= thumb_pos && i < thumb_pos + thumb_heigth
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323 ? attr_thumb : attr_scroll);
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324
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325 ++row;
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326 }
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327 }
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328
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329 #if 0 /* not used yet */
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330 /*
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331 * Return the index of the currently selected item.
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332 */
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333 int
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334 pum_get_selected()
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335 {
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336 return pum_selected;
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337 }
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338 #endif
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339
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340 /*
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341 * Set the index of the currently selected item. The menu will scroll when
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342 * necessary. When "n" is out of range don't scroll.
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838
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343 * This may be repeated when the preview window is used:
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344 * "repeat" == 0: open preview window normally
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345 * "repeat" == 1: open preview window but don't set the size
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346 * "repeat" == 2: don't open preview window
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800
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347 * Returns TRUE when the window was resized and the location of the popup menu
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348 * must be recomputed.
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349 */
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350 static int
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838
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351 pum_set_selected(n, repeat)
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800
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352 int n;
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838
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353 int repeat;
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800
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354 {
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355 int resized = FALSE;
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356 int context = pum_height / 2;
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357
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358 pum_selected = n;
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359
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360 if (pum_selected >= 0 && pum_selected < pum_size)
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361 {
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362 if (pum_first > pum_selected - 4)
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363 {
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364 /* scroll down; when we did a jump it's probably a PageUp then
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365 * scroll a whole page */
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366 if (pum_first > pum_selected - 2)
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367 {
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368 pum_first -= pum_height - 2;
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369 if (pum_first < 0)
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370 pum_first = 0;
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371 else if (pum_first > pum_selected)
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372 pum_first = pum_selected;
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373 }
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374 else
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375 pum_first = pum_selected;
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376 }
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377 else if (pum_first < pum_selected - pum_height + 5)
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378 {
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379 /* scroll up; when we did a jump it's probably a PageDown then
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380 * scroll a whole page */
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381 if (pum_first < pum_selected - pum_height + 1 + 2)
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382 {
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383 pum_first += pum_height - 2;
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384 if (pum_first < pum_selected - pum_height + 1)
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385 pum_first = pum_selected - pum_height + 1;
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386 }
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387 else
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388 pum_first = pum_selected - pum_height + 1;
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389 }
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390
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391 /* Give a few lines of context when possible. */
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392 if (context > 3)
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393 context = 3;
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394 if (pum_height > 2)
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395 {
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396 if (pum_first > pum_selected - context)
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397 {
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398 /* scroll down */
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399 pum_first = pum_selected - context;
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400 if (pum_first < 0)
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401 pum_first = 0;
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402 }
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403 else if (pum_first < pum_selected + context - pum_height + 1)
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404 {
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405 /* scroll up */
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406 pum_first = pum_selected + context - pum_height + 1;
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407 }
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408 }
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409
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410 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
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816
|
411 /*
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|
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412 * Show extra info in the preview window if there is something and
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|
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413 * 'completeopt' contains "preview".
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838
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414 * Skip this when tried twice already.
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415 * Skip this also when there is not much room.
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816
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416 * NOTE: Be very careful not to sync undo!
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|
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417 */
|
|
800
|
418 if (pum_array[pum_selected].pum_info != NULL
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838
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419 && Rows > 10
|
|
|
420 && repeat <= 1
|
|
|
421 && vim_strchr(p_cot, 'p') != NULL)
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|
800
|
422 {
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|
|
423 win_T *curwin_save = curwin;
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|
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424 int res = OK;
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|
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425
|
|
|
426 /* Open a preview window. 3 lines by default. */
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|
|
427 g_do_tagpreview = 3;
|
|
816
|
428 resized = prepare_tagpreview(FALSE);
|
|
800
|
429 g_do_tagpreview = 0;
|
|
|
430
|
|
|
431 if (curwin->w_p_pvw)
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|
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432 {
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|
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433 if (curbuf->b_fname == NULL
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434 && curbuf->b_p_bt[0] == 'n' && curbuf->b_p_bt[2] == 'f'
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435 && curbuf->b_p_bh[0] == 'w')
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|
|
436 {
|
|
|
437 /* Already a "wipeout" buffer, make it empty. */
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|
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438 while (!bufempty())
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|
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439 ml_delete((linenr_T)1, FALSE);
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|
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440 }
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|
825
|
441 else
|
|
800
|
442 {
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|
825
|
443 /* Don't want to sync undo in the current buffer. */
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|
|
444 ++no_u_sync;
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|
|
445 res = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, 0);
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|
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446 --no_u_sync;
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|
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447 if (res == OK)
|
|
|
448 {
|
|
|
449 /* Edit a new, empty buffer. Set options for a "wipeout"
|
|
|
450 * buffer. */
|
|
|
451 set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
|
|
|
452 set_option_value((char_u *)"bt", 0L,
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|
|
453 (char_u *)"nofile", OPT_LOCAL);
|
|
|
454 set_option_value((char_u *)"bh", 0L,
|
|
|
455 (char_u *)"wipe", OPT_LOCAL);
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|
|
456 set_option_value((char_u *)"diff", 0L,
|
|
|
457 (char_u *)"", OPT_LOCAL);
|
|
|
458 }
|
|
800
|
459 }
|
|
|
460 if (res == OK)
|
|
|
461 {
|
|
|
462 char_u *p, *e;
|
|
|
463 linenr_T lnum = 0;
|
|
|
464
|
|
|
465 for (p = pum_array[pum_selected].pum_info; *p != NUL; )
|
|
|
466 {
|
|
|
467 e = vim_strchr(p, '\n');
|
|
|
468 if (e == NULL)
|
|
|
469 {
|
|
|
470 ml_append(lnum++, p, 0, FALSE);
|
|
|
471 break;
|
|
|
472 }
|
|
|
473 else
|
|
|
474 {
|
|
|
475 *e = NUL;
|
|
835
|
476 ml_append(lnum++, p, (int)(e - p + 1), FALSE);
|
|
800
|
477 *e = '\n';
|
|
|
478 p = e + 1;
|
|
|
479 }
|
|
|
480 }
|
|
|
481
|
|
|
482 /* Increase the height of the preview window to show the
|
|
|
483 * text, but no more than 'previewheight' lines. */
|
|
838
|
484 if (repeat == 0)
|
|
800
|
485 {
|
|
838
|
486 if (lnum > p_pvh)
|
|
|
487 lnum = p_pvh;
|
|
|
488 if (curwin->w_height < lnum)
|
|
|
489 {
|
|
|
490 win_setheight((int)lnum);
|
|
|
491 resized = TRUE;
|
|
|
492 }
|
|
800
|
493 }
|
|
|
494
|
|
|
495 curbuf->b_changed = 0;
|
|
|
496 curbuf->b_p_ma = FALSE;
|
|
|
497 curwin->w_cursor.lnum = 0;
|
|
|
498 curwin->w_cursor.col = 0;
|
|
|
499
|
|
|
500 if (curwin != curwin_save && win_valid(curwin_save))
|
|
|
501 {
|
|
|
502 /* Return cursor to where we were */
|
|
|
503 validate_cursor();
|
|
|
504 redraw_later(SOME_VALID);
|
|
|
505
|
|
|
506 /* When the preview window was resized we need to
|
|
|
507 * update the view on the buffer. Only go back to
|
|
|
508 * the window when needed, otherwise it will always be
|
|
|
509 * redraw. */
|
|
|
510 if (resized)
|
|
|
511 {
|
|
|
512 win_enter(curwin_save, TRUE);
|
|
|
513 update_topline();
|
|
|
514 }
|
|
|
515
|
|
|
516 /* Update the screen before drawing the popup menu.
|
|
|
517 * Enable updating the status lines. */
|
|
|
518 pum_do_redraw = TRUE;
|
|
|
519 update_screen(0);
|
|
|
520 pum_do_redraw = FALSE;
|
|
|
521
|
|
816
|
522 if (!resized && win_valid(curwin_save))
|
|
800
|
523 win_enter(curwin_save, TRUE);
|
|
|
524
|
|
|
525 /* May need to update the screen again when there are
|
|
|
526 * autocommands involved. */
|
|
|
527 pum_do_redraw = TRUE;
|
|
|
528 update_screen(0);
|
|
|
529 pum_do_redraw = FALSE;
|
|
|
530 }
|
|
|
531 }
|
|
|
532 }
|
|
|
533 }
|
|
|
534 #endif
|
|
|
535 }
|
|
|
536
|
|
|
537 /* Never display more than we have */
|
|
|
538 if (pum_first > pum_size - pum_height)
|
|
|
539 pum_first = pum_size - pum_height;
|
|
|
540
|
|
|
541 if (!resized)
|
|
|
542 pum_redraw();
|
|
|
543
|
|
|
544 return resized;
|
|
|
545 }
|
|
|
546
|
|
|
547 /*
|
|
|
548 * Undisplay the popup menu (later).
|
|
|
549 */
|
|
|
550 void
|
|
|
551 pum_undisplay()
|
|
|
552 {
|
|
|
553 pum_array = NULL;
|
|
|
554 redraw_all_later(SOME_VALID);
|
|
940
|
555 #ifdef FEAT_WINDOWS
|
|
|
556 redraw_tabline = TRUE;
|
|
|
557 #endif
|
|
800
|
558 status_redraw_all();
|
|
|
559 }
|
|
|
560
|
|
|
561 /*
|
|
|
562 * Clear the popup menu. Currently only resets the offset to the first
|
|
|
563 * displayed item.
|
|
|
564 */
|
|
|
565 void
|
|
|
566 pum_clear()
|
|
|
567 {
|
|
|
568 pum_first = 0;
|
|
|
569 }
|
|
|
570
|
|
|
571 /*
|
|
|
572 * Return TRUE if the popup menu is displayed.
|
|
|
573 * Overruled when "pum_do_redraw" is set, used to redraw the status lines.
|
|
|
574 */
|
|
|
575 int
|
|
|
576 pum_visible()
|
|
|
577 {
|
|
|
578 return !pum_do_redraw && pum_array != NULL;
|
|
|
579 }
|
|
|
580
|
|
|
581 /*
|
|
|
582 * Return the height of the popup menu, the number of entries visible.
|
|
|
583 * Only valid when pum_visible() returns TRUE!
|
|
|
584 */
|
|
|
585 int
|
|
|
586 pum_get_height()
|
|
|
587 {
|
|
|
588 return pum_height;
|
|
|
589 }
|
|
|
590
|
|
|
591 #endif
|
