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Code Issues Packages Projects Releases Wiki Activity

Focus search form on Home key press #704 (#714)

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Hrishi Raj 2021-03-31 13:20:43 +05:30 committed by GitHub
parent 3c043eef1c
commit 1cbdb326f9
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2 changed files with 72 additions and 9 deletions
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7
www/index.html
View File

@ -417,6 +417,13 @@
<strong>Animate transition between app pages</strong>
</label>
</div>
<div class="checkbox">
<label>
<input type="checkbox" name="useHomeKeyToFocusSearchBar"
id="useHomeKeyToFocusSearchBarCheck">
<strong>Use Home key to focus search bar</strong> (may rarely have side effects on ZIM files that handle Home key)
</label>
</div>
<div class="form-group">
<label>
<b>Select app theme</b> (content inversion is experimental):

74
www/js/app.js
View File

@ -81,7 +81,10 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'settingsStore','abstractFilesys
params['appTheme'] = settingsStore.getItem('appTheme') || 'light'; // Currently implemented: light|dark|dark_invert|dark_mwInvert
document.getElementById('appThemeSelect').value = params.appTheme;
uiUtil.applyAppTheme(params.appTheme);
// A global parameter to turn on/off the use of Keyboard HOME Key to focus search bar
params['useHomeKeyToFocusSearchBar'] = settingsStore.getItem('useHomeKeyToFocusSearchBar') === 'true';
document.getElementById('useHomeKeyToFocusSearchBarCheck').checked = params.useHomeKeyToFocusSearchBar;
switchHomeKeyToFocusSearchBar();
// An object to hold the current search and its state (allows cancellation of search across modules)
appstate['search'] = {
'prefix': '', // A field to hold the original search string
@ -347,6 +350,11 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'settingsStore','abstractFilesys
params.showUIAnimations = this.checked ? true : false;
settingsStore.setItem('showUIAnimations', params.showUIAnimations, Infinity);
});
$('input:checkbox[name=useHomeKeyToFocusSearchBar]').on('change', function () {
params.useHomeKeyToFocusSearchBar = this.checked ? true : false;
settingsStore.setItem('useHomeKeyToFocusSearchBar', params.useHomeKeyToFocusSearchBar, Infinity);
switchHomeKeyToFocusSearchBar();
});
document.getElementById('appThemeSelect').addEventListener('change', function (e) {
params.appTheme = e.target.value;
settingsStore.setItem('appTheme', params.appTheme, Infinity);
@ -386,6 +394,35 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'settingsStore','abstractFilesys
}, 600);
});
//focus search bar (#prefix) if Home key is pressed
function focusPrefixOnHomeKey(event) {
//check if home key is pressed
if (event.key === 'Home') {
// wait to prevent interference with scrolling (default action)
setTimeout(function() {
document.getElementById('prefix').focus();
},0);
}
}
//switch on/off the feature to use Home Key to focus search bar
function switchHomeKeyToFocusSearchBar() {
var iframeContentWindow = document.getElementById('articleContent').contentWindow;
// when the feature is in active state
if (params.useHomeKeyToFocusSearchBar) {
//Handle Home key press inside window(outside iframe) to focus #prefix
window.addEventListener('keydown', focusPrefixOnHomeKey);
//only for initial empty iFrame loaded using `src` attribute
//in any other case listener gets removed on reloading of iFrame content
iframeContentWindow.addEventListener('keydown', focusPrefixOnHomeKey);
}
// when the feature is not active
else {
//remove event listener for window(outside iframe)
window.removeEventListener('keydown', focusPrefixOnHomeKey);
//if feature is deactivated and no zim content is loaded yet
iframeContentWindow.removeEventListener('keydown', focusPrefixOnHomeKey);
}
}
/**
* Displays or refreshes the API status shown to the user
*/
@ -1145,14 +1182,22 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'settingsStore','abstractFilesys
docBody.addEventListener('drop', handleIframeDrop);
}
resizeIFrame();
// Reset UI when the article is unloaded
if (iframeArticleContent.contentWindow) iframeArticleContent.contentWindow.onunload = function () {
$("#articleList").empty();
$('#articleListHeaderMessage').empty();
$('#articleListWithHeader').hide();
$("#prefix").val("");
$("#searchingArticles").show();
};
if (iframeArticleContent.contentWindow) {
// Configure home key press to focus #prefix only if the feature is in active state
if (params.useHomeKeyToFocusSearchBar)
iframeArticleContent.contentWindow.addEventListener('keydown', focusPrefixOnHomeKey);
// Reset UI when the article is unloaded
iframeArticleContent.contentWindow.onunload = function () {
// remove eventListener to avoid memory leaks
iframeArticleContent.contentWindow.removeEventListener('keydown', focusPrefixOnHomeKey);
$("#articleList").empty();
$('#articleListHeaderMessage').empty();
$('#articleListWithHeader').hide();
$("#prefix").val("");
$("#searchingArticles").show();
};
}
};
if(! isDirEntryExpectedToBeDisplayed(dirEntry)){
@ -1317,6 +1362,7 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'settingsStore','abstractFilesys
docBody.addEventListener('dragover', handleIframeDragover);
docBody.addEventListener('drop', handleIframeDrop);
}
// Set the requested appTheme
uiUtil.applyAppTheme(params.appTheme);
// Allow back/forward in browser history
@ -1331,6 +1377,16 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'settingsStore','abstractFilesys
//loadJavaScriptJQuery();
loadCSSJQuery();
insertMediaBlobsJQuery();
if (iframeArticleContent.contentWindow) {
// Configure home key press to focus #prefix only if the feature is in active state
if (params.useHomeKeyToFocusSearchBar)
iframeArticleContent.contentWindow.addEventListener('keydown', focusPrefixOnHomeKey);
// when unloaded remove eventListener to avoid memory leaks
iframeArticleContent.contentWindow.onunload = function () {
iframeArticleContent.contentWindow.removeEventListener('keydown', focusPrefixOnHomeKey);
};
}
};
// Load the blank article to clear the iframe (NB iframe onload event runs *after* this)