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rust-libnotify/src/glib/main_context.rs.html

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Documentation for hasufell/rust-libnotify@a951e61
2018-01-25 09:45:19 +00:00
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</pre><pre class="rust ">
<span class="comment">// Copyright 2015-2016, The Gtk-rs Project Developers.</span>
<span class="comment">// See the COPYRIGHT file at the top-level directory of this distribution.</span>
<span class="comment">// Licensed under the MIT license, see the LICENSE file or &lt;http://opensource.org/licenses/MIT&gt;</span>
<span class="kw">use</span> <span class="ident">ffi</span>;
<span class="kw">use</span> <span class="ident">translate</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">mem</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">transmute</span>;
<span class="kw">use</span> <span class="ident">ffi</span> <span class="kw">as</span> <span class="ident">glib_ffi</span>;
<span class="kw">use</span> <span class="ident">ffi</span>::{<span class="ident">gpointer</span>, <span class="ident">gboolean</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cell</span>::<span class="ident">RefCell</span>;
<span class="kw">use</span> <span class="ident">MainContext</span>;
<span class="kw">use</span> <span class="ident">Source</span>;
<span class="kw">use</span> <span class="ident">SourceId</span>;
<span class="kw">use</span> <span class="ident">source</span>::{<span class="ident">CallbackGuard</span>, <span class="ident">Priority</span>};
<span class="kw">impl</span> <span class="ident">MainContext</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">prepare</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> (<span class="ident">bool</span>, <span class="ident">i32</span>) {
<span class="kw">unsafe</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">priority</span> <span class="op">=</span> <span class="ident">mem</span>::<span class="ident">uninitialized</span>();
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">from_glib</span>(<span class="ident">ffi</span>::<span class="ident">g_main_context_prepare</span>(<span class="self">self</span>.<span class="ident">to_glib_none</span>().<span class="number">0</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">priority</span>));
(<span class="ident">res</span>, <span class="ident">priority</span>)
}
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">find_source_by_id</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">source_id</span>: <span class="ident">SourceId</span>) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Source</span><span class="op">&gt;</span> {
<span class="kw">unsafe</span> {
<span class="ident">from_glib_none</span>(<span class="ident">ffi</span>::<span class="ident">g_main_context_find_source_by_id</span>(<span class="self">self</span>.<span class="ident">to_glib_none</span>().<span class="number">0</span>, <span class="ident">source_id</span>.<span class="ident">to_glib</span>()))
}
}
<span class="comment">// FIXME: These can actually be FnOnce but require FnBox to</span>
<span class="comment">// stabilize, or Box&lt;FnOnce()&gt; to be callable otherwise</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">invoke</span><span class="op">&lt;</span><span class="ident">F</span><span class="op">&gt;</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">func</span>: <span class="ident">F</span>)
<span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnMut</span>() <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">&#39;static</span> {
<span class="kw">unsafe</span> {
<span class="ident">glib_ffi</span>::<span class="ident">g_main_context_invoke_full</span>(<span class="self">self</span>.<span class="ident">to_glib_none</span>().<span class="number">0</span>, <span class="ident">glib_ffi</span>::<span class="ident">G_PRIORITY_DEFAULT_IDLE</span>, <span class="prelude-val">Some</span>(<span class="ident">trampoline</span>),
<span class="ident">into_raw</span>(<span class="ident">func</span>), <span class="prelude-val">Some</span>(<span class="ident">destroy_closure</span>))
}
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">invoke_with_priority</span><span class="op">&lt;</span><span class="ident">F</span><span class="op">&gt;</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">priority</span>: <span class="ident">Priority</span>, <span class="ident">func</span>: <span class="ident">F</span>)
<span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnMut</span>() <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">&#39;static</span> {
<span class="kw">unsafe</span> {
<span class="ident">glib_ffi</span>::<span class="ident">g_main_context_invoke_full</span>(<span class="self">self</span>.<span class="ident">to_glib_none</span>().<span class="number">0</span>, <span class="ident">priority</span>.<span class="ident">to_glib</span>(), <span class="prelude-val">Some</span>(<span class="ident">trampoline</span>),
<span class="ident">into_raw</span>(<span class="ident">func</span>), <span class="prelude-val">Some</span>(<span class="ident">destroy_closure</span>))
}
}
}
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">&quot;cargo-clippy&quot;</span>, <span class="ident">allow</span>(<span class="ident">transmute_ptr_to_ref</span>))]</span>
<span class="kw">unsafe</span> <span class="kw">extern</span> <span class="string">&quot;C&quot;</span> <span class="kw">fn</span> <span class="ident">trampoline</span>(<span class="ident">func</span>: <span class="ident">gpointer</span>) <span class="op">-&gt;</span> <span class="ident">gboolean</span> {
<span class="kw">let</span> <span class="ident">_guard</span> <span class="op">=</span> <span class="ident">CallbackGuard</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">func</span>: <span class="kw-2">&amp;</span><span class="ident">RefCell</span><span class="op">&lt;</span><span class="ident">Box</span><span class="op">&lt;</span><span class="ident">FnMut</span>() <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;&gt;</span> <span class="op">=</span> <span class="ident">transmute</span>(<span class="ident">func</span>);
(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">func</span>.<span class="ident">borrow_mut</span>())();
<span class="ident">glib_ffi</span>::<span class="ident">G_SOURCE_REMOVE</span>
}
<span class="kw">unsafe</span> <span class="kw">extern</span> <span class="string">&quot;C&quot;</span> <span class="kw">fn</span> <span class="ident">destroy_closure</span>(<span class="ident">ptr</span>: <span class="ident">gpointer</span>) {
<span class="kw">let</span> <span class="ident">_guard</span> <span class="op">=</span> <span class="ident">CallbackGuard</span>::<span class="ident">new</span>();
<span class="ident">Box</span>::<span class="op">&lt;</span><span class="ident">RefCell</span><span class="op">&lt;</span><span class="ident">Box</span><span class="op">&lt;</span><span class="ident">FnMut</span>() <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;&gt;</span><span class="op">&gt;</span>::<span class="ident">from_raw</span>(<span class="ident">ptr</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> _);
}
<span class="kw">fn</span> <span class="ident">into_raw</span><span class="op">&lt;</span><span class="ident">F</span>: <span class="ident">FnMut</span>() <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;</span>(<span class="ident">func</span>: <span class="ident">F</span>) <span class="op">-&gt;</span> <span class="ident">gpointer</span> {
<span class="kw">let</span> <span class="ident">func</span>: <span class="ident">Box</span><span class="op">&lt;</span><span class="ident">RefCell</span><span class="op">&lt;</span><span class="ident">Box</span><span class="op">&lt;</span><span class="ident">FnMut</span>() <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;&gt;</span><span class="op">&gt;</span> <span class="op">=</span>
<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">RefCell</span>::<span class="ident">new</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">func</span>)));
<span class="ident">Box</span>::<span class="ident">into_raw</span>(<span class="ident">func</span>) <span class="kw">as</span> <span class="ident">gpointer</span>
}
</pre>
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