SevenOfAces/Apollo-Guidance-Computer
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feat: add first/last buttons

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This commit is contained in:
James Harris 2020-08-03 22:07:20 +01:00
parent 74aba54707
commit 4f51f408a1
1 changed files with 28 additions and 10 deletions
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38
index.html
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@ -7,32 +7,48 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<script>
const COMANCHE055 = "Comanche055";
const LUMINARY099 = "Luminary099";
const COMANCHE055_PAGES = 1751;
const LUMINARY099_PAGES = 1743;
function changeDir() {
showPage();
}
function showFirst() {
changePage(1);
}
function showLast() {
const directory = document.form.directory.value;
if (directory === COMANCHE055) changePage(COMANCHE055_PAGES);
else if (directory === LUMINARY099) changePage(LUMINARY099_PAGES);
}
function showPrevious() {
const newpage = parseInt(document.form.pagenum.value) - 1;
if (newpage >= 1) {
changePage(newpage);
}
}
function showNext() {
const newpage = parseInt(document.form.pagenum.value) + 1;
const directory = document.form.directory.value;
if (
(directory === "Comanche055" && newpage <= COMANCHE055_PAGES) ||
(directory === "Luminary099" && newpage <= LUMINARY099_PAGES)
(directory === COMANCHE055 && newpage <= COMANCHE055_PAGES) ||
(directory === LUMINARY099 && newpage <= LUMINARY099_PAGES)
) {
changePage(newpage);
}
}
function changePage(page) {
document.form.pagenum.value = parseInt(page);
showPage();
}
function showPage() {
let page = parseInt(document.form.pagenum.value);
const directory = document.form.directory.value;
@ -40,17 +56,16 @@
if (page < 1) {
document.form.pagenum.value = 1;
page = 1;
} else if (directory === "Comanche055" && page > COMANCHE055_PAGES) {
} else if (directory === COMANCHE055 && page > COMANCHE055_PAGES) {
document.form.pagenum.value = COMANCHE055_PAGES;
page = COMANCHE055_PAGES;
} else if (directory === "Luminary099" && page > LUMINARY099_PAGES) {
} else if (directory === LUMINARY099 && page > LUMINARY099_PAGES) {
document.form.pagenum.value = LUMINARY099_PAGES;
page = LUMINARY099_PAGES;
}
formattedPage = page.toString().padStart(4, "0");
imageURL = `https://www.ibiblio.org/apollo/ScansForConversion/${directory}/${formattedPage}.jpg`;
const formattedPage = page.toString().padStart(4, "0");
const imageURL = `https://www.ibiblio.org/apollo/ScansForConversion/${directory}/${formattedPage}.jpg`;
document.image.src = imageURL;
document.body.style.cursor = "progress";
}
@ -82,7 +97,8 @@
<option>Comanche055</option>
<option>Luminary099</option>
</select>
<input type="button" onClick="showPrevious()" value="Previous Page" />
<input type="button" onClick="showFirst()" value="First" />
<input type="button" onClick="showPrevious()" value="Previous" />
<input
type="text"
name="pagenum"
@ -91,10 +107,12 @@
maxlength="4"
value="1"
/>
<input type="button" onClick="showNext()" value="Next Page" />
<input type="button" onClick="showNext()" value="Next" />
<input type="button" onClick="showLast()" value="Last" />
<span>
Images hosted by
<a href="https://www.ibiblio.org/apollo">Ibiblio</a> and the Virtual AGC project
<a href="https://www.ibiblio.org/apollo">Ibiblio</a>
and the Virtual AGC project
</span>
</form>
<img