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<td class='lines'><pre><code><span class="hl slc">--Minetest</span>
<span class="hl slc">--Copyright (C) 2014 sapier</span>
<span class="hl slc">--</span>
<span class="hl slc">--This program is free software; you can redistribute it and/or modify</span>
<span class="hl slc">--it under the terms of the GNU Lesser General Public License as published by</span>
<span class="hl slc">--the Free Software Foundation; either version 2.1 of the License, or</span>
<span class="hl slc">--(at your option) any later version.</span>
<span class="hl slc">--</span>
<span class="hl slc">--this program is distributed in the hope that it will be useful,</span>
<span class="hl slc">--but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="hl slc">--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<span class="hl slc">--GNU Lesser General Public License for more details.</span>
<span class="hl slc">--</span>
<span class="hl slc">--You should have received a copy of the GNU Lesser General Public License along</span>
<span class="hl slc">--with this program; if not, write to the Free Software Foundation, Inc.,</span>
<span class="hl slc">--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span>
<span class="hl kwa">local function</span> <span class="hl kwd">dialog_event_handler</span><span class="hl opt">(</span>self<span class="hl opt">,</span>event<span class="hl opt">)</span>
<span class="hl kwa">if</span> self<span class="hl opt">.</span>user_eventhandler <span class="hl opt">==</span> <span class="hl kwa">nil or</span>
self<span class="hl opt">.</span><span class="hl kwd">user_eventhandler</span><span class="hl opt">(</span>event<span class="hl opt">) ==</span> <span class="hl kwa">false then</span>
<span class="hl slc">--close dialog on esc</span>
<span class="hl kwa">if</span> event <span class="hl opt">==</span> <span class="hl str">"MenuQuit"</span> <span class="hl kwa">then</span>
self<span class="hl opt">:</span><span class="hl kwd">delete</span><span class="hl opt">()</span>
<span class="hl kwa">return true</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">local</span> dialog_metatable <span class="hl opt">= {</span>
eventhandler <span class="hl opt">=</span> dialog_event_handler<span class="hl opt">,</span>
get_formspec <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">)</span>
<span class="hl kwa">if not</span> self<span class="hl opt">.</span>hidden <span class="hl kwa">then return</span> self<span class="hl opt">.</span><span class="hl kwd">formspec</span><span class="hl opt">(</span>self<span class="hl opt">.</span>data<span class="hl opt">)</span> <span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
handle_buttons <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">,</span>fields<span class="hl opt">)</span>
<span class="hl kwa">if not</span> self<span class="hl opt">.</span>hidden <span class="hl kwa">then return</span> self<span class="hl opt">.</span><span class="hl kwd">buttonhandler</span><span class="hl opt">(</span>self<span class="hl opt">,</span>fields<span class="hl opt">)</span> <span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
handle_events <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">,</span>event<span class="hl opt">)</span>
<span class="hl kwa">if not</span> self<span class="hl opt">.</span>hidden <span class="hl kwa">then return</span> self<span class="hl opt">.</span><span class="hl kwd">eventhandler</span><span class="hl opt">(</span>self<span class="hl opt">,</span>event<span class="hl opt">)</span> <span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
hide <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">)</span> self<span class="hl opt">.</span>hidden <span class="hl opt">=</span> <span class="hl kwa">true end</span><span class="hl opt">,</span>
show <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">)</span> self<span class="hl opt">.</span>hidden <span class="hl opt">=</span> <span class="hl kwa">false end</span><span class="hl opt">,</span>
delete <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">)</span>
<span class="hl kwa">if</span> self<span class="hl opt">.</span>parent <span class="hl opt">~=</span> <span class="hl kwa">nil then</span>
self<span class="hl opt">.</span>parent<span class="hl opt">:</span><span class="hl kwd">show</span><span class="hl opt">()</span>
<span class="hl kwa">end</span>
ui<span class="hl opt">.</span><span class="hl kwd">delete</span><span class="hl opt">(</span>self<span class="hl opt">)</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
set_parent <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>self<span class="hl opt">,</span>parent<span class="hl opt">)</span> self<span class="hl opt">.</span>parent <span class="hl opt">=</span> parent <span class="hl kwa">end</span>
<span class="hl opt">}</span>
dialog_metatable<span class="hl opt">.</span>__index <span class="hl opt">=</span> dialog_metatable
<span class="hl kwa">function</span> <span class="hl kwd">dialog_create</span><span class="hl opt">(</span>name<span class="hl opt">,</span>get_formspec<span class="hl opt">,</span>buttonhandler<span class="hl opt">,</span>eventhandler<span class="hl opt">)</span>
<span class="hl kwa">local</span> self <span class="hl opt">= {}</span>
self<span class="hl opt">.</span>name <span class="hl opt">=</span> name
self<span class="hl opt">.</span><span class="hl kwb">type</span> <span class="hl opt">=</span> <span class="hl str">"toplevel"</span>
self<span class="hl opt">.</span>hidden <span class="hl opt">=</span> <span class="hl kwa">true</span>
self<span class="hl opt">.</span>data <span class="hl opt">= {}</span>
self<span class="hl opt">.</span>formspec <span class="hl opt">=</span> get_formspec
self<span class="hl opt">.</span>buttonhandler <span class="hl opt">=</span> buttonhandler
self<span class="hl opt">.</span>user_eventhandler <span class="hl opt">=</span> eventhandler
<span class="hl kwd">setmetatable</span><span class="hl opt">(</span>self<span class="hl opt">,</span>dialog_metatable<span class="hl opt">)</span>
ui<span class="hl opt">.</span><span class="hl kwd">add</span><span class="hl opt">(</span>self<span class="hl opt">)</span>
<span class="hl kwa">return</span> self
<span class="hl kwa">end</span>
<span class="hl kwa">function</span> <span class="hl kwd">messagebox</span><span class="hl opt">(</span>name<span class="hl opt">,</span> message<span class="hl opt">)</span>
<span class="hl kwa">return</span> <span class="hl kwd">dialog_create</span><span class="hl opt">(</span>name<span class="hl opt">,</span>
<span class="hl kwa">function</span><span class="hl opt">()</span>
<span class="hl kwa">return</span> <span class="hl opt">(</span><span class="hl str">[[</span>
<span class="hl str"> formspec_version[3]</span>
<span class="hl str"> size[8,3]</span>
<span class="hl str"> textarea[0.375,0.375;7.25,1.2;;;%s]</span>
<span class="hl str"> button[3,1.825;2,0.8;ok;%s]</span>
<span class="hl str"> ]]</span><span class="hl opt">):</span><span class="hl kwb">format</span><span class="hl opt">(</span>message<span class="hl opt">,</span> <span class="hl kwd">fgettext</span><span class="hl opt">(</span><span class="hl str">"OK"</span><span class="hl opt">))</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
<span class="hl kwa">function</span><span class="hl opt">(</span>this<span class="hl opt">,</span> fields<span class="hl opt">)</span>
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>ok <span class="hl kwa">then</span>
this<span class="hl opt">:</span><span class="hl kwd">delete</span><span class="hl opt">()</span>
<span class="hl kwa">return true</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
<span class="hl kwa">nil</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
</code></pre></td></tr></table>
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